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cylinder head woes

Posted: Fri Sep 30, 2011 12:52 am
by peteferg
hi all,

the baur resto is moving along well, all the welding is finished, and the suspension and brakes have been rebuilt. but as the car is outside, i thought i would try and get the car rolling before the winter.

the car ran when I bought it, but i was sure that it was missing a bit, and it was smoking slightly. so i decided as i was replacing the timing belt tensioner and water pump, i would pull the head off for a bit of investigation.

well that was tonight, and i soon as i took the head off i spotted a couple of lovely cresent shapes in the top of the pistons! the wort being no 6. sure enough no6 exhaust valve is bent.

but it has obviously been ran like that, as it has also worn the rocker and damaged the cam lobe. this is expense i didnt need as the baur is eating cash at an alarming rate!! now i could replace the cam, follower and valve, or i could buy a whole s/h head for £120. but now i am concerned that there is some sideways movement in the pistons? how much should they move? if i repair the head am i just strapping it to a crappy bottom end, and would i be better looking for a complete engine???

does anyone know how much a new cam is?

anyone have any advice on my best course of action?
cheers guys,

Re: cylinder head woes

Posted: Mon Oct 03, 2011 3:55 pm
by DrGonzoPOW
I have a good head from an E30 that i ran on my old engine (731 cast). I could sell you that for cheaps
Dont think there should be any sideways movement in your pistons though, would think that the seals are shot in that case

Re: cylinder head woes

Posted: Mon Oct 03, 2011 5:51 pm
by e21-Mark
Stick a 2.5 in there.

Re: cylinder head woes

Posted: Mon Oct 03, 2011 7:21 pm
by DrGonzoPOW
knew that was coming........:)

Re: cylinder head woes

Posted: Mon Oct 03, 2011 7:48 pm
by murran
e21-Mark wrote:Stick a 2.5 in there.
do iiiiiiiiit. :cheers

its not hard is it dave? lol.

has it caught any of the other valves? id buy daves head tbh, with your cam/rocker being worn..
i have some decent (read, not perfect) s/h rockers. but no cam.

does your rocker look like this one?
Image
on the left ofcourse.

Re: cylinder head woes

Posted: Thu Oct 06, 2011 12:09 am
by DrGonzoPOW
Ive got a mate thats going to North Wales in about 3 weeks so if your wanting the head i could send it over with him. Let me know

Re: cylinder head woes

Posted: Sat Oct 08, 2011 4:15 pm
by peteferg
sorry for the delay guys, been flat out!

I have managed to aquire a 200 head which i have now stripped and rebuild, but thanks for the offers! it isnt running yet but i should be in about a week or so, and ill post an update.

as for the m20b25 suggestions, thats next years project!!!

Re: cylinder head woes

Posted: Sat Oct 08, 2011 8:08 pm
by TopCat
DrGonzoPOW wrote:I have a good head from an E30 that i ran on my old engine (731 cast). I could sell you that for cheaps
Dont think there should be any sideways movement in your pistons though, would think that the seals are shot in that case

I might need that cylindar head for my E30?!

PLease PM me info

No immediate hurry