porting heads soon, answers welcome.

mrkindweiler · Dec 25, 2008

THE lucky13 said:
stock thickness or a little thicker would be what i was looking for

he mentioned that if the gasket is thicker there will be more of a chance of the boost pushin it out

THE lucky13 · Dec 25, 2008

no way, good gaskets and head studs will seal it up just fine. Just make sure the heads are flat.

mrkindweiler · Dec 25, 2008

THE lucky13 said:
no way, good gaskets and head studs will seal it up just fine. Just make sure the heads are flat.

right on, thank you brother! as for head studs, is ARP the way to go? and i should just order them as if they were goin on a 5.2/5.9 right? and where should i order them from?

mrkindweiler · Dec 25, 2008

was going with 2.02 intake valves a good idea? and the stock 1.62 exhaust valvles.

mrkindweiler · Dec 25, 2008

http://www.cometic.com/custom.aspx

maybe i shall order some custom ones, they wouldnt be THAT custom because all i would have to tell them is to make a gasket identicle to that of a 5.2L and stubtract 1 hole from each gasket... :jester:

think i shall try this?

THE lucky13 · Dec 26, 2008

ARP deffinately...im not too familiar with the 3.9's but i would think that a v8 kit would work fine. Call cometic up direct, they probably can make the gaskets for you.

THE lucky13 · Dec 26, 2008

mrkindweiler said:
was going with 2.02 intake valves a good idea? and the stock 1.62 exhaust valvles.

IIRC the 3.9's have a 3.91 bore, same as the 318's correct? As long as the bore isn't smaller than that I'd use the 2.02's. Any smaller bore and you could run into problems with shrouding and negating any benefits of the 2.02's

mrkindweiler · Dec 26, 2008

THE lucky13 said:
IIRC the 3.9's have a 3.91 bore, same as the 318's correct? As long as the bore isn't smaller than that I'd use the 2.02's. Any smaller bore and you could run into problems with shrouding and negating any benefits of the 2.02's

yes, 3.9 is identical to the 5.2 minus 2 cylinders

96BlkDak · Dec 29, 2008

Definatly want a thicker gasket for when you put your turbo on. if the 5.2 gasket has all the same opening I cant see why cutting one down would not work.

THE lucky13 · Dec 29, 2008

can't cut one down...the cylinder that was removed was an inner cylinder. The little legs the go up the block to the end rails have to be there, so cutting one isn't an option

mrkindweiler · Dec 29, 2008

THE lucky13 said:
can't cut one down...the cylinder that was removed was an inner cylinder. The little legs the go up the block to the end rails have to be there, so cutting one isn't an option

i was told by more than 1 person it was the rear 2 cylinders cut off?

jmaack727 · Dec 29, 2008

I heard the front....

mrkindweiler · Dec 29, 2008

jmaack727 said:
I heard the front....

:jester: well lets get this here figured out......

THE lucky13 · Dec 29, 2008

doesn't really matter..still can't cut down a v8 hg to work on a 3.9. you will end up with a leak

96BlkDak · Dec 29, 2008

ok we got one cant, one maybe, one front and one back....... this is sounding like a bad joke in the making.

mrkindweiler · Dec 29, 2008

Hahah

SteedstER · Dec 30, 2008

I think the water jackets are different, IMHO

mrkindweiler · Dec 30, 2008

ok, i just talked to the machinest, he said putting in the bigger 2.02 valves will weaken the head because he'll have to modify the seat. And that the exh and int. valves are closer to each other than on a 318 head, causing this problem. I thought the 3.9 and 5.2 head were identicle? not true?

SteedstER · Dec 30, 2008

mrkindweiler said:
ok, i just talked to the machinest, he said putting in the bigger 2.02 valves will weaken the head because he'll have to modify the seat. And that the exh and int. valves are closer to each other than on a 318 head, causing this problem. I thought the 3.9 and 5.2 head were identicle? not true?

I've never heard that:huh:

THE lucky13 · Dec 31, 2008

maybe time for another machinist?

porting heads soon, answers welcome.

mrkindweiler

THE lucky13

mrkindweiler

mrkindweiler

mrkindweiler

THE lucky13

THE lucky13

mrkindweiler

96BlkDak

THE lucky13

mrkindweiler

jmaack727

mrkindweiler

THE lucky13

96BlkDak

mrkindweiler

SteedstER

mrkindweiler

SteedstER

THE lucky13

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