An old boss of mine at one point owned an LJ torana sports sedan that ran a turbo 202 reliably for many years, I used to maintain it for him. This is similar to the sump to rocker cover vent system used on his.
FX Holden Race Car Project
Re: FX Holden Race Car Project
According to chemistry, alcohol is a solution...
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Re: FX Holden Race Car Project
Ah yes, that makes a lot of sense. Vent the crank to the rocker first, then out the rocker cover. That would negate the windage pressure forcing out via the pushrod holes and help with oil and air separation that might occur if you vented just out the crank by itself.
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Re: FX Holden Race Car Project
i originally had a third breather line from the fuel pump hole to the catch can, it was getting a lot of oil up that tube on the dyno so i then decided to use a T piece and put it into the tappet cover via the front breather, but that didnt seem to help either so im not sure....
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Re: FX Holden Race Car Project
Is there a preferential side on the engine for breathers to be tapped into? I know on the larger engines you generally don’t mount oil level controllers etc on the RH side due to windage. Same could be true for breathers. Wouldn’t matter in the rocker cover but maybe in the sump.
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Re: FX Holden Race Car Project
pretty sure in the case of this engine the crank would be rotating up and towards the fuel pump hole breather so that wouldnt be helping...
No matter what the question is, the answer is always more horsepower!
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Re: FX Holden Race Car Project
I bet you shat yourself when that happened. the rings might need bedding in to reduce the crankcase pressure only problem is you can't (legally) take for a drive to do it.
Re: FX Holden Race Car Project
I’ve got a similar problem with my turbo 265 engine with it experiencing blow back after changing the rings and I assume the rings haven’t bedded in correctly. The compressions are all good and even but it haven’t traveled many kms since the re-ring. Following with interest.
Re: FX Holden Race Car Project
Try an Anti Foaming oil!
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