We have 5 Pintos between us and several seem to breath to heavily, usually when we run multiple carbs and pipe crank & rocker cover to a catch tank.
What would be the pipe size, take off places and catch tank configuration that would help stop the oil blowing out of any place it can find.Current engine we are working on started to blow out of the dipstick tube.
Chuffing out of the catch tank breather, I'm sure the filter tube on top is to small at 10mm
what has worked for you?
This is my setup works well, no oil spilt and oil return back into sump so no full catch tank after a full days rallying !
I used -10 for rocker and sump breather piping and -12 for the return to the sump.
As Enda - MEX809P said use an oil return back to sump, otherwise the catch tank will fill over time no matter how good the ring seal is with wet sump
"Horsepower sells cars, torque wins races" - Enzo Ferrari
I like the idea of the oil return and I guess if the catch tank is breathing then there is no reason that it wouldn't allow it to vent.
I run the crankcase breather up into the rocker cover and then out of the rocker cover into a catch tank. That way you are only breathing out of the rocker cover as any oil out of the crankcase breather goes straight back into the engine! Seems to work well!
Mk2 Escort 1700 X-flow-1/4 mile 12.76 @ 102mph «NUFF SED»
HmmmOriginally Posted by James-HPE
I like that idea
Cheers
Dazzle
You can just about make out my setup in this photo. You can see the pipe coming from the back of my rocker cover, that goes to the catch tank. And opposite where it comes out you can see the inlet into the rocker cover which comes from the crankcase.
Mk2 Escort 1700 X-flow-1/4 mile 12.76 @ 102mph «NUFF SED»
That is a neat idea, I will try this out and see how we go.
Thank you gentlemen.
Hello James-HPE,
Do you use any internal baffling in the rocker cover to stop any overflow towards the catch tank ? Or just simple entry and exit ?
Regards,
Hi James-HPE,
Same question than hawk1903
Cheers,
Eduardo
I made up a deflector that I welded in to stop a straight flow into the catch tank, just make sure you have enough clearance to your rockers.
This system doesn't completely stop oil into the catch tank, but it reduces it quite considerably.
Mk2 Escort 1700 X-flow-1/4 mile 12.76 @ 102mph «NUFF SED»
Hi James-HPE, thanks for your kind advice.
Cheers,
Eduardo
Hi James,
Thank you very much.
Cheers,
Kerem
No problem
Mk2 Escort 1700 X-flow-1/4 mile 12.76 @ 102mph «NUFF SED»
Sounds like a good idea James, hadn't thought of that one
Another important thing to consider is using a good crank scraper, we have experienced a lot less oil in the air leaving the block with a crank scraper
I have designed a very good fitting laser cut crank scraper if you are interested in trying one give me a shout and I will send you some pics
"Horsepower sells cars, torque wins races" - Enzo Ferrari
Look's nice that. Great idea. Whats the pipe in the front face of the breather box doing? (can just make it out in the bottom left corner under the blue throttle cable)
RWD, some pics of the crank scraper would be nice.
Here you go DarthVader:
This is the first one I designed and made, now have the hole positions perfected, minimal if any filing to fit, will suit any rods with std 2.0 crank
High quality item with two proper location points unlike all other scrapers
"Horsepower sells cars, torque wins races" - Enzo Ferrari
Thats really nice. See PM
The pipe at the front just has a little filter on the end, and to be honest I only fitted it because the catch tank came with a pipe outlet and I didn't have a bung to replace it. It is not necessary as long as your catch tank has a breathable cap.
Mk2 Escort 1700 X-flow-1/4 mile 12.76 @ 102mph «NUFF SED»
Price for the scraper is £30 + £8 registered postage to UK and rest of world, sent with a piece of wood on one side to keep the plate nice and straight
Have about 10 in stock at the moment if interested send me a pm with your address and I will send you my paypal email
The scraper is fitted with RTV sealant on both sides of the scraper and a normal cork gasket on the other side, both sides will be level when fully tightened
Fit the sump tighten the bolts, let the RTV sealant set over night, then fully tighten, will give a perfect seal
The half round rubber sump seals need to be modified slightly on the scraper side, simple cut 1mm off the bottom with a razor blade so that the seal sits on top of the scraper
Bulk discounts available
Regards
Jason
"Horsepower sells cars, torque wins races" - Enzo Ferrari
I should also add we would expect a solid 2 to 3% increase in power using this vs std wet sump and no scraper, plus reduced air in oil and reduced oil out the breathers, it all helps
"Horsepower sells cars, torque wins races" - Enzo Ferrari
Hi Jason, I'll take one for my 205 Pinto. I'm sending you a PM with my full details and stuff.
Cheers,
Eduardo
Last edited by ebenech; 06-04-2012 at 19:51.
Another trick is to use the largest bore pipes in the breather system to slow the vapour speed down so the oil particles have more chance to fall out. i use 16mm heater hose not ideal but cheap enough to replace every year if needed. never seem to have a filling catch tank either
Never had a problem, although always run Total seal rings in my pinto's. Engine breathes through a 3mm hole in the block, revved to 8400rpm . Also reduced the oil feed hole diameter to the head to 3mm.
I like the crank scraper ,RWD fords rule.
Further playing with breathers on 2 engines showed that on 1 the filter take off diameter was to small and on the other a pipe diameter miss match and a blocked filter pressurised the sump untill oil spewed out of the dipstick.
I will match the pipes from the rocker and the block and also the catch tank breather.
When I rebuild the high spec engine all breathers will be the same diameter.
I should replace the rings and like the idea of Total Seal, who can supply them in the UK?
By the way the pistons are Cologne 2.8 V6 modified for Cosworth rods.
Sorry, but. If you use pistons made for 5500 revs and uses 7000+ revs then that's your problem. The piston rings are too thick for high revs. Take Forged Pistons, this will help. With forged pistons, I have no problems with over 8000 revs and a simple engine breather system. The engine has been used since 1997 and has about 30,000 KM on Race and Rallye. I have replaced the connecting rod bearings in 2011. Not any more.
We run these pistons in Super Stox oval at 7500 without problem
Other tuners run Kolbienschmit pistons on Cossy or Desiel rods at 8000 no problem
Forged pistons would be nice but I don't have the money right now.
The recent breather problems were on standard engines the 2.1 is in bits part way through a rebuild
Hi Jason, I couldn't send you a PM since your box is full, so you have to clear some messages to obtain space on it. Anyway, just to confirm you cash have been sent.
Cheers
Eduardo
Tidy work there !!
Is there much physical difference between the standard Pinto the crank & the standard Cosworth crank ?
Would your scraper work in an engine using the Cosworth crank ?
Cheers,
David
www.classicandrally.com
if jason hasn't tried it on a cosworth engine yet, i currently have a cosworth engine up on a stand atm and also have one of jasons crank scrappers (btw its very nicely made, arrived quickly and jason really is a man you can trust
its not dead till it's buried!
T.I.T engineering. "Feel the power!"
So, whats the difference between the crank scraper and a windage tray? I am guessing they carry out the same function?
"I love you more than gummy bears"
A windage tray and crank scraper are different things, a windage tray is a barrier between the oil and the crank, some windage trays also have a scraping function built into them
A crank scraper stops large amounts of oil from going around with the crank, an oil scraper would be a more accurate description but "crank scraper" is the commonly used name, scrapers continually direct oil back down into the sump, they also lead to less air bubbles in the oil and less oil out the breather pipes, a 2 to 3% power increase due to less oil going around with/crashing against the crank all of this has been proven with race engines on dyno's
Regards
Jason
"Horsepower sells cars, torque wins races" - Enzo Ferrari
Cheers Alexif jason hasn't tried it on a cosworth engine yet, i currently have a cosworth engine up on a stand atm and also have one of jasons crank scrappers (btw its very nicely made, arrived quickly and jason really is a man you can trust
I have had a look at a YB crank before and it is quite different than the pinto crank, the crank scraper would not suit a YB crank without having to machine the plate, I could design/make a YB scraper if there was enough demand
"Horsepower sells cars, torque wins races" - Enzo Ferrari
I just deleted a load of messages, fills up fast lol
"Horsepower sells cars, torque wins races" - Enzo Ferrari
Jason,
The crank scraper is excellent quality, perfect fit and a great value.
Many thanks again.
Kerem
Thank you Kerem
It is a pleasure to deal with you
"Horsepower sells cars, torque wins races" - Enzo Ferrari
Got mine 10min ago, thanks Jason- as mentioned its superb quality
Thank you Craig
"Horsepower sells cars, torque wins races" - Enzo Ferrari
would a T piece from the rocker breather on an na yb with one side going to the crank case and the other to a catch tank with breather work ok? with the catch tank possibly plumbed to the dormant turbo oil return?
In theory yes, in practise no. Of course you will get the necessary breathing required but by using a t piece, any oil from the crankcase will just bypass the cam cover and straight into the tank. By going in one side and out the other, any breathed out oil will just re-enter the engine!
Mk2 Escort 1700 X-flow-1/4 mile 12.76 @ 102mph «NUFF SED»
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