twisted wedge heads?

[jeff5347]

Ok i have the twisted wedge trick flow heads and the in and ex dont line up. I have both valve covers off but dont know if i have the g1 or g2 and there is no casting numbers on the outside of the head and nothing on the inside where the springs and rocker arms are. How do i know which heads i have. Very frustrating?

[nitrorocket]

?????

[Matt@RFR]

What do you mean by the exhaust and intake not lining up???

[jeff5347]

these are what t hey look like with out the valve covers on. They are eith a g1 or g2 head. G1 heads are 13/23 degree and g2 is a 16/18 degree angle on the valves. not sure which ones these are

[Matt@RFR]

That aint no 10º difference.

[jeff5347]

i didnt think so either but didnt know what generation twisted wedge i had. I was gonna sell them but i think i may have them worked and reuse them

[LowBuckX]

The numbers are on the pad bettween the exhaust ports under the header flange. When you get the numbers email or call Artie and he can help.


Artie Kakiou Technical Advisor
email: [email protected]
Tele: 330-630-1555 Ext: 6324


If I had to take a guess Id say G2 because of the added material around the spring pockets. My G1s do not have that much material.

[Zee]

My G1's were upgraded with 1.47 springs but they did not appear to have as much material around the springs either. Also I'm under the impression the G1's had iron guides while the G2's used bronze. Can you see what the top of the guide looks like?

[LowBuckX]

Zee is absolutly correct G2s have Bronze/Mang Guides while the G1s have Iron.

[jeff5347]

Hey guys,
ireceived a email form Artie at tws and he sent me the specs on the heads. He states i have the g2s. the g1s have a steped guidee plate while the g2s are flat. Th eg2s seem to only have 67 cc chambers and a 190 cc intake port. What problems would arise by shaving the head to a 64 cc or a smidge lower?

[Matt@RFR]

You need to call them again and find out how much to deck the head per 1cc. When you know that, compare your piston-to-valve clearence currently with what you'd have after machining, keeping in mind that if you have a valve job done, the valves will be sunk further into the chambers. And you'll have to recalculate your compression.

[LowBuckX]

Just give Artie a call he is a cool guy to talk to.