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Urgent Help Needed!

mickr33couple

By mickr33couple,
in Engines & Forced Induction

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mickr33couple Community Regular

mickr33couple

Posted
Posted

Hi all,

Got my engine rebuilt forged internals etc standard head just with 256 cams

Cranked the engine to build oil pressure, cranked it for like 5secs got 80psi pressure, started the car up and straight away lifters started tapping off its head,

Before anyone says take it to engine builder, I will on Monday when he open but been weekend Ill like to try work out what's wrong with it,

Nitto oil pump, still running VCt, blocked middle, 1.5m rear restritors,

Only thing I'm thinking is engine builder didnt do cleanances right? But I highly doubt it,

Bad lifters? How can I tell?

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mickr33couple Community Regular

mickr33couple

Posted
  • Author
Posted

Hydraulic lifters sorry,

Thought that as well, we had it at normal temps, (half way) took it just for short drive under 3000rpms and still ticking,

It seems to rev slow like it revs and the come down revs is slightly sorry

mickr33couple Community Regular

mickr33couple

Posted
  • Author
Posted

I was so nervous to start it as I have had so many issues in regards to work that was done on it, I didn't wanna start it... But just from

How loud they are and all the time doing it, I didn't wanna risk driving it and causing more damage, but yes they have been out of the motor for about 7months dry,

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

If its a fresh build you shouldn't be idling it or taking it on a light/brief drive.

You should be seating the rings or you'll stuff the build entirely. Tow it to the builder/dyno Monday and don't keep starting it now. All you should do on a fresh build is let it run for a couple mins just so you find any potential water/oil/air leaks etc.

mickr33couple Community Regular

mickr33couple

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yeah fair things i wanna check like cam cover just to make sure its not hitting it was late yesterday arvo 5pm and once i heard the noise i didnt want anything to do with it for the day was a let down she packed up closed the shop lol

Risking Grand Master

Risking

Posted
Posted

Was the previous engine blow up a spun bearing by any chance??

It's so common this happens when a small bearing particle blocks the head oil feed from the previous blow up and you end up with stuff all oil to the head.

It's bloody hard to have the galleries cleaned out perfectly unless the original restrictors are removed.

A lot of engines I've seen built by various Motorsport teams like the supercars have external feeds to the cylinder head with inline filters to prevent this happening.

mickr33couple Community Regular

mickr33couple

Posted
  • Author
Posted

Hole bottom end was destroyed in the old motor, started again with block and crank, only think that didnt change was the head, but engine builder knew what happen with old motor and I told him to wash the head and he said he would do that,

Only thing that was used from the spun bearing motor was the head, lifters and cams? Could these of been f**ked from the old motor? I asked the engine builder to check everything to make sure it was all good to go back in

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