User Tag List

+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 40 of 79

Thread: My 2.0 Zetec with ST170 head first dyno session

  1. #1
    Bodger

    Join Date
    Jan 2007
    Location
    Slovenia
    Posts
    56
    Thanks
    0
    Thanked 4 Times in 4 Posts

    My 2.0 Zetec with ST170 head first dyno session

    Spec:
    2.0 Zetec engine block (silvertop)
    86mm(1,5mm oversize) wiseco 12.5:1 comp ratio 2050cc
    Eagle rods
    lightened and balanced standard crankshaft
    Focus ST170 Head
    ported
    three angle valve job (factory valves 33,5mm and 28mm)
    CatCams 293/285 degres with 12.7/12.2mm lift
    Exhaust
    factory Focus ST170/SVT header heat wraped
    3" exhaust
    intake/injection
    hayabusa throttle bodies enlarged by 2mm
    Megasquirt ECU
    440cc injectors
    cooling
    Davies Craig electric water pump with controller

    First dyno session fuel maps and minor ignition timing tuning. Cam timing, ignition timing and trumpet lenght adjustments to come.

    For now:

    269.9HP@7500rpm and 261Nm(192.5lb/ft)@6150rpm

    2.0 Zetec/ST170 N/A 270HP

  2. #2
    Bodger

    Join Date
    Jan 2007
    Location
    Slovenia
    Posts
    56
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Ignore the wrong date. It was on the dyno on tuesday.

    The Mondeo is gone and the Fiesta took it's place.

    Here's a vid:
    2.0 Zetec/ST170 N/A 270HP

  3. #3
    Mechanic Doug@g19engineering's Avatar

    Join Date
    Mar 2006
    Location
    Nr Ipswich
    Posts
    734
    Thanks
    2
    Thanked 18 Times in 13 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    270 bhp. Very impresive.

  4. #4
    Mechanic

    Join Date
    May 2007
    Location
    Vic, Australia
    Posts
    654
    Thanks
    120
    Thanked 76 Times in 69 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Very impressive

    Makes the pinto to zetec conversion that bit more appealing....


    Shaun

  5. #5
    Bodger

    Join Date
    Jul 2005
    Location
    Australia
    Age
    53
    Posts
    153
    Thanks
    5
    Thanked 9 Times in 8 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Is their any difficulty in adapting the ST170 head?
    Cheers

    Paul

  6. #6
    Racer Decade Plus User RWD fords rule's Avatar

    Join Date
    Feb 2006
    Location
    Ireland
    Age
    38
    Posts
    3,588
    Thanks
    174
    Thanked 373 Times in 311 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Great engine there mate
    Who made the intake manifold to suit your hayabusa tb's?

    What modifications did you need to do to fit the ST170 head onto the silvertop zetec bottom end?

    Any pics or other video's of the engine?

    Thanks

    Jason
    Last edited by RWD fords rule; 07-03-2009 at 12:10.

  7. #7
    Spanner Monkey

    Join Date
    Mar 2007
    Location
    Reading
    Age
    34
    Posts
    309
    Thanks
    2
    Thanked 2 Times in 2 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    who done your cylinder head mate? thats a mighty zetec
    WWW.NTSAUTO.CO.UK
    BERKSHIRE BODY SHOP

  8. #8
    Bodger

    Join Date
    Jan 2007
    Location
    Slovenia
    Posts
    56
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Quote Originally Posted by RWD fords rule View Post
    Great engine there mate
    Who made the intake manifold to suit your hayabusa tb's?

    What modifications did you need to do to fit the ST170 head onto the silvertop zetec bottom end?

    Any pics or other video's of the engine?

    Thanks

    Jason
    The intake manifold is a modified DCOE piece. The bodies have DCOE flange welded on.
    Custom made by me. Looks rough on the outside but does the job.



    When using a silvertop block you need to play with belt tensioner arrangement. The head fits strait on.



    The head was bought in USA allready ported. Just had the valve seat cut to three angles.






    2.0 Zetec/ST170 N/A 270HP

  9. #9
    Tyre Kicker

    Join Date
    Jul 2008
    Location
    London
    Age
    37
    Posts
    40
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Top stuff Piko, Don't suppose you have any picture of the inlet manifold off the engine do you to show how its made?

  10. #10
    Racer Decade Plus User Adam B's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Feb 2007
    Location
    Hillingdon
    Age
    37
    Posts
    2,432
    Thanks
    23
    Thanked 37 Times in 37 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    yes mate, proper animal!

    My Project... Fiesta D-TEC

  11. #11
    Bodger

    Join Date
    Jan 2007
    Location
    Slovenia
    Posts
    56
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Quote Originally Posted by Rainbow View Post
    Top stuff Piko, Don't suppose you have any picture of the inlet manifold off the engine do you to show how its made?
    The inlet manifold is a Zetec DCOE item. The throttle bodies are welded to a DCOE flange that bolts to this manifold.

    Jan
    2.0 Zetec/ST170 N/A 270HP

  12. #12
    Part of the furniture Decade Plus User trig's Avatar

    My 1st Project
    Join Date
    Jul 2006
    Location
    bristol
    Age
    42
    Posts
    11,510
    Thanks
    902
    Thanked 213 Times in 204 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Any more details on the engine spec mate as I spoke to the guy at cat cams today he said that to use them cams you need uprated followers and steel rods forged pistons that have pockets in them for the valves.

    have you done any of this as he also said you would need to rev the engine to min 8K to get the best outa the cams.
    hence the steel rods!

    Dont the ST engine have steel rods as standard???
    And forged pistons???


  13. #13
    Bodger

    Join Date
    Jan 2007
    Location
    Slovenia
    Posts
    56
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    With the 2301016 Catcams I'm using OEM followers with their uprated valvesprings. The head needed to be modifyed for the cam lobes to clear.
    Since I have a silvertop bottom end I needed to go forged anyway. The pistons are custom Wiseco with apropriate pockets.

    The restrictive OEM ST170 exhaust manifold is the reason peak power is not at 8000 revs.

    I belive the ST rods are forged and the pistons can probably have smaller pockets made to accomodate higher lift cams, if necessary
    2.0 Zetec/ST170 N/A 270HP

  14. The Following User Says Thank You to piko For This Useful Post:


  15. #14
    Part of the furniture Decade Plus User trig's Avatar

    My 1st Project
    Join Date
    Jul 2006
    Location
    bristol
    Age
    42
    Posts
    11,510
    Thanks
    902
    Thanked 213 Times in 204 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Quote Originally Posted by piko View Post
    With the 2301016 Catcams I'm using OEM followers with their uprated valvesprings. The head needed to be modifyed for the cam lobes to clear.

    Since I have a silvertop bottom end I needed to go forged anyway. The pistons are custom Wiseco with apropriate pockets.

    The restrictive OEM ST170 exhaust manifold is the reason peak power is not at 8000 revs.

    I belive the ST rods are forged and the pistons can probably have smaller pockets made to accomodate higher lift cams, if necessary
    Thanks for the info dude

  16. #15
    World Champion Decade Plus User RETRO_AL's Avatar

    My 1st Project
    Join Date
    Feb 2004
    Location
    skipton
    Age
    46
    Posts
    6,299
    Thanks
    19
    Thanked 37 Times in 36 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Impressive fiqures

  17. #16
    Bodger

    Join Date
    Jan 2007
    Location
    Slovenia
    Posts
    56
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    BTW there was a FOCUS ST170 running 290HP with simmilar spec to mine. Mike Webb racing or something like that.
    2.0 Zetec/ST170 N/A 270HP

  18. #17
    Part of the furniture Decade Plus User trig's Avatar

    My 1st Project
    Join Date
    Jul 2006
    Location
    bristol
    Age
    42
    Posts
    11,510
    Thanks
    902
    Thanked 213 Times in 204 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Im looking for 220 realy as thats 50 more than I got now should give me a bit more of what I like maybe go for more at a later date???

  19. #18
    Pit Crew Decade Plus User

    Join Date
    Jul 2002
    Location
    Bedfordshire
    Age
    54
    Posts
    1,890
    Thanks
    112
    Thanked 67 Times in 67 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Isnt there some law of physics that says the Torque & BHP lines on a dyno should cross at 5250rpm ?

    I struggle to believe an N/A Motor can make 100bhp more than the standard ST170 with standard valves. Will they really flow enough in their standard form to make the extra 100bhp ?

  20. #19
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    55
    Posts
    25,176
    Thanks
    297
    Thanked 2,287 Times in 2,096 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    --------------------------------------------------------------------------------

    Isnt there some law of physics that says the Torque & BHP lines on a dyno should cross at 5250rpm ?
    yes the should, if they dont theres something wrong with the graph or the figures have been fudged

    the formular for bhp is

    bhp = rpm x torques/5250

    torque = bhp x 2550/rpm

    struggle to believe an N/A Motor can make 100bhp more than the standard ST170 with standard valves. Will they really flow enough in their standard form to make the extra 100bhp ?
    __________________
    im not so sure on that one, although with the right shpe ports and other mods, afterall my race engine is still on std size valves and makes 140bhp more than std, that said it has been stretched 500cc and is full race spec, so it might be possible
    Last edited by Graham; 29-10-2009 at 02:53.

  21. #20
    Bodger

    Join Date
    Jan 2007
    Location
    Slovenia
    Posts
    56
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Quote Originally Posted by neilm View Post
    Isnt there some law of physics that says the Torque & BHP lines on a dyno should cross at 5250rpm ?

    I struggle to believe an N/A Motor can make 100bhp more than the standard ST170 with standard valves. Will they really flow enough in their standard form to make the extra 100bhp ?
    The lines will only cross at that point (5250rpm) if you use BHP and lbft as values with the same scale.

    My graph displays HP and kgm (Nm/9.81) and different scale.

    Power and tourq will allway be connected with an equation so the couldn't be a mistake here.
    False reading can only be due to friction losses through the drivetrain. 10HP+- most likely and 260hp is still good.

    A well ported ST170 on standard valves will flow enough for over 300HP N/A as stated by CNCheads.
    2.0 Zetec/ST170 N/A 270HP

  22. #21
    Pit Crew

    My 1st Project
    My 2nd Project
    Join Date
    Dec 2007
    Location
    Dubai
    Posts
    1,716
    Thanks
    29
    Thanked 115 Times in 106 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    bloody good result there, is it a Ford Racing head you got, or somewhere else??

    www.gulfpetrolheads.com

  23. #22
    Spanner Monkey

    Join Date
    Feb 2005
    Location
    Norway
    Posts
    445
    Thanks
    3
    Thanked 54 Times in 53 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session


  24. #23
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    55
    Posts
    25,176
    Thanks
    297
    Thanked 2,287 Times in 2,096 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    The lines will only cross at that point (5250rpm) if you use BHP and lbft as values with the same scale.

    My graph displays HP and kgm (Nm/9.81) and different scale.
    arhh yes that makes sense

  25. #24
    Bodger

    Join Date
    Jan 2007
    Location
    Slovenia
    Posts
    56
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Quote Originally Posted by Svein View Post
    Yes, like that, but made it myself. You will need TWO of these btw.
    2.0 Zetec/ST170 N/A 270HP

  26. #25
    Bodger

    Join Date
    Jan 2007
    Location
    Slovenia
    Posts
    56
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session



    A rought representation of the intake port size differece betwen ST and Zetec head.
    From bottom to top of injector port and width of the port are the same on both. But the port seeling is much higher on the ST as you can see. It looks like a 10-15% increase in port volume over the standard Zetec.
    Last edited by piko; 29-10-2009 at 13:41.
    2.0 Zetec/ST170 N/A 270HP

  27. #26
    World Champion Decade Plus User RETRO_AL's Avatar

    My 1st Project
    Join Date
    Feb 2004
    Location
    skipton
    Age
    46
    Posts
    6,299
    Thanks
    19
    Thanked 37 Times in 36 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    How come you used a silvertop bottom end instead of the bottom end used on the st170?

  28. #27
    Pit Crew Decade Plus User

    Join Date
    Jul 2002
    Location
    Bedfordshire
    Age
    54
    Posts
    1,890
    Thanks
    112
    Thanked 67 Times in 67 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Quote Originally Posted by graham bahr View Post
    im not so sure on that one, although with the right shpe ports and other mods, afterall my race engine is still on std size valves and makes 140bhp more than std, that said it has been stretched 500cc and is full race spec, so it might be possible
    Thing is Graham, if you start with a 'cooking' model engine you can wring loads more out of it, but Ford have already had at least 40bhp out of the ST over a standard Zetec, to then take a further 100bhp just seems a little bit 'optimistic' to me.

    I hope I am wrong, so when my black top goes phut I can replace it with an ST and see 80bhp more than I have now.

  29. #28
    Part of the furniture Decade Plus User trig's Avatar

    My 1st Project
    Join Date
    Jul 2006
    Location
    bristol
    Age
    42
    Posts
    11,510
    Thanks
    902
    Thanked 213 Times in 204 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Im hoping for 220+ ill be happy with that

    me mate got one in his anglia (with one of you manifolds neil) he's seeing 191bhp at the wheels think that very good?

  30. #29
    Bodger

    Join Date
    Jan 2007
    Location
    Slovenia
    Posts
    56
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Quote Originally Posted by RETRO_AL View Post
    How come you used a silvertop bottom end instead of the bottom end used on the st170?
    Because I could just get the head, and I had a silvertop bottom end and I got a good deal on the rods(300$) and custom Wiseco pistons (500$).
    2.0 Zetec/ST170 N/A 270HP

  31. #30
    Bodger

    Join Date
    Jan 2007
    Location
    Slovenia
    Posts
    56
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Quote Originally Posted by neilm View Post
    Thing is Graham, if you start with a 'cooking' model engine you can wring loads more out of it, but Ford have already had at least 40bhp out of the ST over a standard Zetec, to then take a further 100bhp just seems a little bit 'optimistic' to me.

    I hope I am wrong, so when my black top goes phut I can replace it with an ST and see 80bhp more than I have now.
    The ST head is overengineered for the 170HP it puts out.
    I'm shure the engine was designed to have around 200HP, but was detuned because of plans for the RS.
    2.0 Zetec/ST170 N/A 270HP

  32. #31
    Part of the furniture Decade Plus User trig's Avatar

    My 1st Project
    Join Date
    Jul 2006
    Location
    bristol
    Age
    42
    Posts
    11,510
    Thanks
    902
    Thanked 213 Times in 204 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    O and this is the same head as they use on the focus RS and it flows ok in that?

    I know someone with a RS thats running good power on gasflowed head (not ported just cleaned up the standard head).

  33. #32
    Bodger

    Join Date
    Jan 2007
    Location
    Slovenia
    Posts
    56
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Quote Originally Posted by trig View Post
    O and this is the same head as they use on the focus RS and it flows ok in that?

    I know someone with a RS thats running good power on gasflowed head (not ported just cleaned up the standard head).
    Nope, the focus RS head is a normal 2.0 Zetec.
    2.0 Zetec/ST170 N/A 270HP

  34. #33
    Pit Crew Decade Plus User

    Join Date
    Feb 2007
    Location
    Norway
    Age
    46
    Posts
    1,093
    Thanks
    65
    Thanked 19 Times in 18 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    So this isn't a Ford Racing CNC'ed head? Wonder what's the difference between an ST head and the Ford Racing CNC'ed heads reguarding flow rates.
    67 TVR VIXEN V8

  35. #34
    Part of the furniture Decade Plus User trig's Avatar

    My 1st Project
    Join Date
    Jul 2006
    Location
    bristol
    Age
    42
    Posts
    11,510
    Thanks
    902
    Thanked 213 Times in 204 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Thought the RS was an St with turbo???

  36. #35
    Bodger

    Join Date
    Jan 2007
    Location
    Slovenia
    Posts
    56
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Quote Originally Posted by trig View Post
    Thought the RS was an St with turbo???
    Nope, just a Zetec head.
    2.0 Zetec/ST170 N/A 270HP

  37. #36
    Part of the furniture Decade Plus User trig's Avatar

    My 1st Project
    Join Date
    Jul 2006
    Location
    bristol
    Age
    42
    Posts
    11,510
    Thanks
    902
    Thanked 213 Times in 204 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    A mate poped over yesterday and stripped the engine here's what I've now got
    Attached Thumbnails Attached Thumbnails DSC00591.JPG‎  

    DSC00592.JPG‎  

    DSC00593.JPG‎  

    DSC00594.JPG‎  

    DSC00595.JPG‎  


  38. #37
    Part of the furniture Decade Plus User trig's Avatar

    My 1st Project
    Join Date
    Jul 2006
    Location
    bristol
    Age
    42
    Posts
    11,510
    Thanks
    902
    Thanked 213 Times in 204 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session


  39. #38
    Part of the furniture Decade Plus User trig's Avatar

    My 1st Project
    Join Date
    Jul 2006
    Location
    bristol
    Age
    42
    Posts
    11,510
    Thanks
    902
    Thanked 213 Times in 204 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session


  40. #39
    Part of the furniture Decade Plus User trig's Avatar

    My 1st Project
    Join Date
    Jul 2006
    Location
    bristol
    Age
    42
    Posts
    11,510
    Thanks
    902
    Thanked 213 Times in 204 Posts
    Last edited by trig; 01-11-2009 at 15:15.

  41. #40
    Bodger

    Join Date
    Mar 2009
    Location
    scunthorpe
    Age
    78
    Posts
    67
    Thanks
    0
    Thanked 10 Times in 9 Posts

    Re: My 2.0 Zetec with ST170 head first dyno session

    Quote Originally Posted by Sonus View Post
    So this isn't a Ford Racing CNC'ed head? Wonder what's the difference between an ST head and the Ford Racing CNC'ed heads reguarding flow rates.
    Hope this helps, the bottom line is a standard zetec, the second one up is ford racing,CNC head, the third one is a ST170 and the top one is one of my black top flowbench developed fast road heads.
    Sorry about the quality of the graph

    ncoll
    Attached Thumbnails Attached Thumbnails zetec1.11.09.jpg‎  

    Last edited by ncoll1; 01-11-2009 at 16:25.

+ Reply to Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts