Valley Gasket - should I change?
Discussion
Hi guys,
Need a reality check, Yesterday I removed the Plenum chamber after cutting the honey comb grill (neat job, :-) marked where the bonnet finished 3rd row from the bottom and cut straight across curved and filed the ends with a mop wheel, job in the town the plenum came our easy).
Now the reason for this job is to renew the fuel pipes (do TVR use child labour) that one clip on top of the gearbox what a b****d. near impossible to get my hands in they now look like I have been fighting with a cat.
The inlet manifold is cover with oil and dirt so i was thinking of removing and cleaning it - good idea or not??
I have also noticed that the valley gasket is metal and all the black paint peeling off, so do I remove it and replace it with a composite one or let sleeping dogs lie - do not open pandora's box... [not the box you lot are thinking of].
Need a reality check, Yesterday I removed the Plenum chamber after cutting the honey comb grill (neat job, :-) marked where the bonnet finished 3rd row from the bottom and cut straight across curved and filed the ends with a mop wheel, job in the town the plenum came our easy).
Now the reason for this job is to renew the fuel pipes (do TVR use child labour) that one clip on top of the gearbox what a b****d. near impossible to get my hands in they now look like I have been fighting with a cat.
The inlet manifold is cover with oil and dirt so i was thinking of removing and cleaning it - good idea or not??
I have also noticed that the valley gasket is metal and all the black paint peeling off, so do I remove it and replace it with a composite one or let sleeping dogs lie - do not open pandora's box... [not the box you lot are thinking of].
Inlet manifold bolts should be reusable, providing they are not damaged or corroded too much..
Unless you want to strip all the top end to bits, I'd just get valley gasket, end seals and some injector o-rings (I'd also replace all 16 as service items while in the vicinity anyway..). Plenum top & trumpet base use goo, can't really think of any other gaskets you need. I personally think it's worth getting decent valley gaskets & end seals, don't be tempted with cheaper offerings. Most suppliers seem to consider 3.9/4.2 as tin valley gaskets & 4.0/4.6 as composite, easier to go to V8D / Power etc that give you the right gasket and more chance of it matching your ports & manifold I'd say.
Unless you want to strip all the top end to bits, I'd just get valley gasket, end seals and some injector o-rings (I'd also replace all 16 as service items while in the vicinity anyway..). Plenum top & trumpet base use goo, can't really think of any other gaskets you need. I personally think it's worth getting decent valley gaskets & end seals, don't be tempted with cheaper offerings. Most suppliers seem to consider 3.9/4.2 as tin valley gaskets & 4.0/4.6 as composite, easier to go to V8D / Power etc that give you the right gasket and more chance of it matching your ports & manifold I'd say.
I hope you had better luck than I did. My valley gasket was falling apart and I thought I would renew it and at the same time check the condition of the cam.
The rear valley gasket bolt necked off, and that meant that I had to pull the motor out of the engine bay in order to drill the remainder of the bolt out and helicoil the hole.
Whilst the engine is out I'm now going right through it and renewing where neded and where sensible - new cam and cam bearings, adjustable push rods, piston rings, main and big end bearings etc etc etc. It also makes sense to me to renew the clutch whilst the engine is out as well so thats also added to the cost.
I'm also replacing the heat shield on the inner wings - when else am I going to have the opportunity?
Hope you dont have nightmares, mines running to approx £2250 at the min. Good luck.
Cheers
Marty
The rear valley gasket bolt necked off, and that meant that I had to pull the motor out of the engine bay in order to drill the remainder of the bolt out and helicoil the hole.
Whilst the engine is out I'm now going right through it and renewing where neded and where sensible - new cam and cam bearings, adjustable push rods, piston rings, main and big end bearings etc etc etc. It also makes sense to me to renew the clutch whilst the engine is out as well so thats also added to the cost.
I'm also replacing the heat shield on the inner wings - when else am I going to have the opportunity?
Hope you dont have nightmares, mines running to approx £2250 at the min. Good luck.
Cheers
Marty
Edited by Marty V8 on Sunday 14th November 23:46
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