View Full Version : t35 with .48 or .63 exhaust housing
hi,
I'm going stage 3, not rebuilding engine yet, but maybe do when it goes, Will the .63 exhaust hosing on the turbo be too laggy with std cams, std head and std compression???
or should i get the .48???
cheers
spiky
IMA_Racing
19-05-2003, 09:46
I personally went for the .48 on my Stage 3 fooking excellent around the lanes...run out of puff abit high up but hey you cant have everything...LOL.Depends on your own driving style.
cheers IMA for repling, did you notice any more lag from the std t3 to the t35 with a .48 housing????
guinnless
19-05-2003, 10:32
Ima's right. I run a .48 housing with a cutback wheel. Slightly more laggy but not much. I also run Stu's secret cam timing http://www.turbosport.co.uk/images/smilies/wink.gif
It's a good all round conversion http://www.turbosport.co.uk/images/smilies/smile.gif
Ive also got the .48 conversion and didnt notice any increase in lag,
what you will notice is that it pulls much better than the standard t3.
Booting it from 2400rpm in 4th i reach full boost at 3250-3300rpm and
it keeps on pulling, holding 24psi up to 6000rpm then its starts to tail
off sligtly (22psi@6500rpm). http://www.turbosport.co.uk/images/smilies/clap.gif
If you are considering a upgrade to 400bhp in the near future i wouldnt
bother with the .48, but if you are happy with that kind of power then
its a nice upgrade.
/Andreas
I'm going for the .63, cos i know if my enigne goes, i'll be sticking low comp and flowed head
so i supppose for the little extra it is i might as well have the bigger now and suffer a little until the big mods come along.
cheers for the comments guys
Spiky
keep it on song and you wont notice any lag lol
IMA_Racing
19-05-2003, 14:14
TBH even though the .48 was great around the lanes...i prefer my T4 even though it takes 4500rpm to make it go...BUT the best thing is it just revs and revs till the 7800rpm limiter with no tail off...which annoyed me with the T34 .48...Although round the lanes its extremely dangerous to boost it past 2nd gear http://www.turbosport.co.uk/images/smilies/clint.gifas its sooooo violent...T4 forever http://www.turbosport.co.uk/images/smilies/laugh.gif
T4 power LOL, they do come on with a pop don't they http://www.turbosport.co.uk/images/smilies/grin.gif
RichardPON
19-05-2003, 20:03
I've gone from a standard T3 to a T34 with the .63, and it is quite laggy.
However, it does come in with a bang with 2 bar of boost http://www.turbosport.co.uk/images/smilies/laugh.gif
My bro's got the .48 on his, and whilst it's mega responsive, it just feels a little limited.......
so what is the limit of the .48 generally? not more than 350bhp then? what are they used with, nothing more than 803`s i wouldnt think. sounds like my std comp 320bhp will be gettin .63then, are roller bearings worth the extra cash? heard it makes for even better response!? thanks for your helps.
Derek_Burleigh
20-05-2003, 08:57
Why not go for a .55 housing? Best of both worlds.
DOH.... didn't know there was one
i'm picking up my new turbo friday...oh well
just gonna have to get a flowed head low comp and run 400bhp... http://www.turbosport.co.uk/images/smilies/clint.gif http://www.turbosport.co.uk/images/smilies/clint.gif http://www.turbosport.co.uk/images/smilies/clint.gif
**DONOTDELETE**
22-05-2003, 17:33
I have a Turbotechnics .55 on my cossie... it really is the best of both worlds.... but saying that my old .48 was well shagged anyway so I guess thats not a fair comparison...
CheeRS
Damian
whats sort of boost and power are you running?
all you guys who have gone to .63 or even .55,
do you have any of your old .48s exhaust housings around?
I'm trying to get a bunch to build some spare turbos for me and my rally friends over here in the third World of Rallying, the USA.
let me know, and we ccan get the ol lump of iron off the floor of you garage, eh?
Thanks,
John
**DONOTDELETE**
23-05-2003, 11:14
Hi
I am currently runnig 1.5 Bar but have run up to 1.7 and 350Bhp (RR test so probably more like 330 - 340) This was on the old .48... the new .55 does seem less restrictided at the top end but I havn't measured the power yet. However as I said the .48 was f**ked and very laggy so the new turbo makes the car faster low down the revs (as its new without a cracked ex housing) and at the top end.
Its also worth noting that 1.7 Bar caused my .48 ex housing to crack (Tony TS said the boost and ex housing restriction was causing an unhealthy heat build up which eventually cracked the housing.)
CheeRS
Damian
cheers for the info guys...will be fitting my new one tonight http://www.turbosport.co.uk/images/smilies/laugh.gif
jon you have more mail http://www.turbosport.co.uk/images/smilies/wink.gif
Ok, .55 is a nice option, but ive been told its very expensive, if you can get hold of one that is, am i right?
yeah i have heard that .55 is like rocking horse shit.
just come in from the garage after fitting my exhaust manifold and .63 t35 turbo http://www.turbosport.co.uk/images/smilies/laugh.gif
dangerousdave
23-05-2003, 23:38
You having fun then mate, bet you cant wait til you can drive it now http://www.turbosport.co.uk/images/smilies/grin.gif
really really cant wait at all
gonne be almost finished this weekend, then just a trip to the tuners to get the fuel setup then it will be time to see how long the rear tyres last...:lol:
RichardPON
26-05-2003, 10:11
Andreas,
If I remember correctly, the .55 housing was an exhaust housing which was never supposed to exist. Ford were using them in rally competition as a way of running more power, and not cheating http://www.turbosport.co.uk/images/smilies/rolleyes.gif Genuine Ford motorsport .55 housings are supposed to be rare - Mike has one on his escort cossie, but now TT and the like are reproducing them......
Cheers for that info Richard.
/Andreas
Hi !
I've found an interesting turbo but I don't know if it can be used a cosworth !
The specs are: Stage III turbine T3 wheel. The turbine housing is a .63 A/R. The compressor is an T04 H trim wheel with a .36 A/R compressor housing. The inlet for the compressor side is 2.75" and the outlet is 2"
Any comments pleas
What´s so special with the .55 housing ? If it´s smaller than .63, it must make more backpressure !?
There is nothing special about it really it just sits in between the .48 and the .63 and yes it does make more back pressure than a .63 but ess than a .48. However it also spools up faster than a .63 Turbo so you get better response. Remember a .63 is good for 400Bhp... As I only run 350 or so I don't need the extra size and chose the faster spooling option of the .55 over the .63. Its also not prone to heat cracks like a .48.
Horses for courses mate...
Damian
mattbell
29-05-2003, 16:36
i have a hybrid turbo with a group a .55 e/h on and its rated to 430bhp by turbotechnics, also has a t04e compressor wheel and an rs500 intake
basically a big front and a small back
o.k. http://www.turbosport.co.uk/images/smilies/confused.gif so where might i find a .55 exh? I`m heading for 380bhp-ish on my 2wd sapphire, need it ultra reliable+fast take up, no seals/bearings blown etc, will this housing do the job, confirm or deny http://www.turbosport.co.uk/images/smilies/wall.gif(spell?) or am I gonna have to .63?
i have a hybrid turbo with a group a .55 e/h on and its rated to 430bhp by turbotechnics, also has a t04e compressor wheel and an rs500 intake
basically a big front and a small back
That sounds really strange combination to me http://www.turbosport.co.uk/images/smilies/shocked.gif
Ported .63 exh.h. and T04 comp. might work better?
mattbell
01-06-2003, 12:49
jahman, not if you want the hp but not the lag
mattbell
01-06-2003, 12:52
this is another example of big front small back...
http://www.derbyshire-rsoc.co.uk/mattupload/porkie%20engine.jpg
thats a 400hp engine with a t28 turbo
The Ultimate Turbo for Cosworths?
Manufactured to fit 2WD & 4WD Sierra Cosworths, RS500 & Escort Cosworths.
Hybrid turbocharger ? Part No. MD240
All units are hand built and blueprinted to exacting tolerance for each customers needs.
Specification
1. 48 trim, 93865S specification TO4E 76mm high flow compressor wheel with 53mm inducer diameter.
2. 0.70 A/R compressor housing with 3 or 4-inch diameter inlet & 2.5 inch compressor discharge for maximum air
flow capability.
3. Left hand threat shaft with GT28 series 76 trim ?low inertia? Inconel turbine wheel, fitted with a racing ?Staggered
Gap? total seal ring to stop oil seepage caused by large bore or low backpressure exhaust systems.
4. Modified bearing housing fitted with angular contact twin roller bearing cartridge for maximum thrust load
capability and fastest ?spool time?.
5. Specially modified turbine housing, 0.61 A/R with ported & polished inlet throat.
6. Optional uprated actuators (any pressure) fitted to strengthened welded on aluminium actuator bracket.
7. Compact GT28 bearing housing assembly for optimum water and oil cooling efficiency.
Note. Requires modified oil feed pipe and oil drainpipe. Oil feed adaptor fitting and oil return flange
supplied with turbo.
What you can expect for your money
1. Boost pressure starts @ 1,800 - 2,000 R.P.M.
2. Full boost (limited) 2.1 BAR @ 2,800 R.P.M.
3. No drop in power @ 6,700 R.P.M.
4. Increase in torque and horsepower over the TB34 unit through the entire rev range.
5. A conservative 450 BHP potential.
Re-mapping is a must with this unit, as the standard ignition map will not keep up with the fast spool up time of this
unit. Performance will vary depending on engine specification such as camshafts etc.
big_wig_074
01-06-2003, 14:20
how much hp gain from the pretty mug on the cam cover?
jahman, not if you want the hp but not the lag
I´m just worried about the backpressure http://www.turbosport.co.uk/images/smilies/smile.gif
I´ve never seen a .55 exh.housing but with unported .48 or.63 exh.housing you´ll get a terrible backpressure. A friend of mine had 4 bar backpressure at 2 bar of boost http://www.turbosport.co.uk/images/smilies/wall.gif
mattbell
02-06-2003, 12:03
exhaust system is 3" from the turbo, has no centre box and the rear box is modified to give 3" internal bore in the 4" housing. all i can say is i'll let you know...engine aint running yet like.
**DONOTDELETE**
04-06-2003, 19:01
how much is the turbo from turbo dynamics the MD240?
cheers dean
**DONOTDELETE**
12-06-2003, 20:50
Any chance some one could tell what this trbo cost
cheers dean
**DONOTDELETE**
12-06-2003, 20:50
Any chance some one could tell what this turbo cost
cheers dean
I have a .55 housing on my esc cos - Steve Scott at A1 Rally didnt seem to have any problem getting me one
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