4g64 Head And Valvetrain Questions...

[Goat Blower]

Originally posted by v8klla@Feb 12 2004, 11:50 AM
Alright, well the 1G head sounds promising, and I will definately put some thought into valves and springs.

I am building a 2g 4g64, of the 7 bolt variety ;) I have Eagle rods and Wiseco pistons already, along with the block and crank. I need to get the machine work done and start assembling this thing. Besides some mitsu parts, I have pretty much everything for the longblock. Which cam gears did you go with, stock 4g64 DOHC or adjustable 4g63?

Jet, what have you heard about that 2900 and daily driving, I'm sure it is a bitch!

Thanks guys,

Chris
Heh, that's nothing. I've got an ACT 3100 and a 3200, can't decide which one to stick in my car. ;)

[JET]

I believe it was Nick that said the 2900 was basically the same as a 2600 for feel. Mine is sitting here in the box, so I haven't tried it yet.

I am going to go with the DOHC 4g64 gears, cheap and easy.

[Raptor]

One of these days I am going to learn to keep my big mouth shut. Like vicious stated, 2G heads outflow 1G heads when ported on the extreme side of things. Stock for stock run 1G heads and intake for sure. I am going to do a 2G head this next month and get some flow numbers for you, it will be flowed on a superflow bench which is the most popular bench around and should be close enough for comparison of some of the published numbers already out there for 1G heads.

2G heads by design are pretty decent even with the smaller unmodded ports due to the velocity and path of the ports and like Shane mentioned would probably still handle 500 HP stock. Now I am closing my mouth like I should have done in the first place.

[1ViciousGSX]

Originally posted by Raptor@Feb 13 2004, 06:15 AM
One of these days I am going to learn to keep my big mouth shut.
Now I am closing my mouth like I should have done in the first place.
WOW, somebody get this man his daily Geritol, he's gettin' cranky. :P

[v8klla]

Well, looking again at my current finances I believe I will go with a stock 1G head for the time being, any one got one they want to sell me with manifold and TB?

We can talk building heads sometime this summer ;)

Chris

PS - I would be interested in those flow bench numbers though...

Also, any reason why adjustable 4g63 gears would be better than the stock 4g64, a little lighter?

[1ViciousGSX]

Originally posted by v8klla@Feb 13 2004, 01:48 PM
Also, any reason why adjustable 4g63 gears would be better than the stock 4g64, a little lighter?
They allow you to correct any timing variation in the machining of the cams so you can make sure they are "right on" for timing. They are also another tool available to help in tuning you engine''s power band and over all performance by being able to alter the cam timing.

[Raptor]

If you want Chris, bring the finished motor over and I can degree the cams for you, call the shop if you are interested.

[v8klla]

sounds good, I will be sure to let you know once this thing gets going. I will also be calling you soon about machine work and pricing once again...

Chris

[SlowWhite]

I'm just starting to read up on this stuff so I'm a newbie and bare with me.

Is there specific adjustable Cam Gears needed if using a 2G head?

[1ViciousGSX]

Originally posted by SlowWhite@Oct 27 2004, 07:37 AM
I'm just starting to read up on this stuff so I'm a newbie and bare with me.

Is there specific adjustable Cam Gears needed if using a 2G head?
I have the Fidanza adjustable gears. I just remarked the gear notch after degreeing in my cams. They will be off by about 4 degrees +/- in either direction. They are off by 1/2 of a tooth. Nobody I know of is making 4g64 adjustable gears yet.