Tuning Rover V8

[hal 1]

Hi
I'm asking this question on behalf of a mate of mine so if my responce is vague please bear with me.

He's tuning a 4.6 V8 with a view to going up to a big valve head with a 214 kent cam.

Would he need to use different pistons or could the originals be modified in any way ?

[Boosted Ls1]

Should be ok with stock pistons. I've used the 214 without any clearance issues.

Boosted.

[wedg1e]

My 3.9 originally had flat-top pistons with valve pockets machined in: I replaced them during the rebuild with standard Rangey dished 3.9 ones, but I got a mate to machine the valve pockets just in case!

[HarryW]

Surprised that a 214 didn't require pocketed pistons tbh, is it a case of a composite head gasket gives you just enough clearance . I'm sure Rob from V8D will give an answer soon.

Harry

[v8 racing]

Providing he hasnt decked the block and is either using early heads with a tin gasket or 4.6 heads with a composite gasket he will be ok, if he is using the 4.6 heads with a tin gasket he will need to check the clearence's, allow around 40 though piston to valve clearence, however in all honesty i would assume he is having it balanced if he is doing a fair job and if so the cost to have the pistons pocketed is pence really!

[hal 1]

Hi

Thanks for all the info, I've passed it all on and he's taking the 'better safe than sorry' route and using 'dished' pistons