justinp61
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- May 15, 2009
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Call Smith Brothers and pick their brains.I can look into a set of 3/8 pushrods, any reccomendations on wall thickness while I'm at it?
Call Smith Brothers and pick their brains.I can look into a set of 3/8 pushrods, any reccomendations on wall thickness while I'm at it?
So over the past day or two now I've read Mike's articles on valvetrain geometry and about raising the rocker shafts and such. It had dawned on me that when I got the rocker kit from Hughes, it came with shims for that very thing. I found them last night and plan to put them in and see if things line up better. I'll share the results soon.
So over the past day or two now I've read Mike's articles on valvetrain geometry and about raising the rocker shafts and such. It had dawned on me that when I got the rocker kit from Hughes, it came with shims for that very thing. I found them last night and plan to put them in and see if things line up better. I'll share the results soon.
As PBR said, don’t use those things.
Mikes spacers are different than those. His actually FIX the issue. At best that Hughes shim only fixes part of it.
How did it end up performing on a 318 ?Nobody, I was trying to achieve as high of compression as I could with the 318 naturally aspirated as I could and those heads had the smallest chambers so that's what I went with. I ended up getting that sucker up to 11.43:1 CR in the end. Reason I was after compression was because i was trying to do a 400hp NA build and upon some research I had found that between airflow and too low of compression normally, you can really wake those things up.
Id love to say but I never got it all to work quite right before it broke a valve and literally punched a hole through piston 3. This bending of pushrods has been an ongoing problem even with that 318.How did it end up performing on a 318 ?
That’s why I questioned it. The valve angles are different and unless you had a piston made for the 318 you’d crash valves. It all makes sense now. Thanks for the pictures.
You could probably guess by the second picture but those pistons USED to be flat tops lolThat’s why I questioned it. The valve angles are different and unless you had a piston made for the 318 you’d crash valves. It all makes sense now. Thanks for the pictures.
Hard to tell really with the damage. Got a pic of one not damaged?You could probably guess by the second picture but those pistons USED to be flat tops lol
I don't have any other pictures of the indents on the other pistons but they were all collidingHard to tell really with the damage. Got a pic of one not damaged?
I was using the same cam that is now in the 340, .513int/.498exh and I've already checked the PTV clearance when I put it all together, I don't remember the numbers anymore but there was plenty all the way through the cycle of the cam.Did you check PTV clearance on the new set up? I know you said you bore scoped it and all…but it’d be good to be sure.
Also, what cam were you running on the 318? Did you degree it? My Victors have almost .200 valve drop (don’t remember exactly at the moment) on the exhaust…that exhaust timing event would have to be pretty far past TDC, especially with the valves laid more towards vertical, where you gain some clearance (hence the decent valve drop numbers). Bit of a head scratcher (see what he did there..?)
The exhaust looks greatYes I am 100% sure I have the Victor heads, they're unmistakable.
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So over the past day or two now I've read Mike's articles on valvetrain geometry and about raising the rocker shafts and such. It had dawned on me that when I got the rocker kit from Hughes, it came with shims for that very thing. I found them last night and plan to put them in and see if things line up better. I'll share the results soon.