Okay, that is what I thought you were saying. Pretty close to what a stock roller cam is then. One solution on the guides would be to make another receiver groove (for the wire lock) higher up on...
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Okay, that is what I thought you were saying. Pretty close to what a stock roller cam is then. One solution on the guides would be to make another receiver groove (for the wire lock) higher up on...
With that lift, your gonna have to make/purchase/modify custom guides as the bottom of the retainer or keepers will most definitely hit the guide, trying to eject the keepers from the retainer. With...
If I may ask, why did you just not use a G-head? My max effort porting results in similar flow bench #'s, at least the way I port them. My conclusions are the swirls intake seem to have a slight edge...
Wow, lots of welding done to that head! Looks like a hybrid; swirl on one side, g-head on the other. Sort of like a mullet. What did they use to say, business up front, party in the back? (lol)....
Brian,
Perhaps your issue could have been because the factory guides are gang drilled. In other words the ID of the guide is not concentric with the guides OD. I've never had issues using the 942...
IMO, it sort of depends a bunch on what size valve you planned to run. 44/37mm valves are quite different than stock 40.6/35.3 valves.
Todd
Don you can also use a good synthetic grease on your bits and sanding rolls. This makes your carbide bits and abrasives less aggressive and helps bits with heat. Any grease will do, I use a Amsoil...
Yes both. The g-head pictured used +1mm intake valves from MP. Nothing special there. I used them because I had them on hand. The MP exhaust valves were BV G-head valves (1.450") reduced in diameter...
I know Steve Menegon typically uses a powerful electric grinder, I use a few different air powered die grinders. There is a huge difference in noise and vibration (or lack of it) when you get into...
It really doesn't increase it as much as one would think. I would say maybe 3cc or so using stock valves. I say this because I almost always use a custom Manley valve that decreases the chamber due...
Sort of. There are 64 holes alone to match port, then you have to port the darn things! The injector housings take a lot of time to port properly. Then of course you hope you don't hit water or PCV...
The short turn area needs plenty of fixin. Flow is very low in this area, but very sensitive.
Todd
Looks good! Now to the throat and short/long turn areas under those valves, and straightening out those ports where needed.
Todd
If your asking me, I don't use cross buffs.
Todd
Sure glad to offer input. Porting is fun but can be very tedious. I've been porting some Corvette 90-95 ZR-1 heads lately. 32 valves, matching injector housings, intake manifold runners, all that...
Yes I do have templates for BV, +1mm valve, std. valve, and of course G-head. I do also use dye and scribe lines too. Ultimately measure chambers and ports with burette. Here is a +1mm G-head that I...
This is typical of what my big valve swirl chambers look like.
Todd
I always run the damper spring. Supposed to help with harmonics. I did test pressures with and without damper though at some point. IIRC w/o looking, it wasn't much different w or w/o damper. What I...
I would start my search with what camshafts are currently available. Seems like sort of slim pickens to me. Don't know what all is stock (if any) these days from vendors. The S2+ camshaft was/is a...
Can't tell if this is sarcasm or not?
I realize your talking 3.0 here Brent, but who besides Warren is actually running a BIG camshaft in their 8V SOHC 2.2/2.5? I also remember Boost geek had one of...
Brian,
If your going with conicals for spring choice, listed below is what I would recommend. If your going to run 942 Comp springs, do what the other Brian (Aries_Turbo) recommends. The Comp 26995...
Brian,
Here you go. Goodson PH-2228a-g is what you want
https://goodson.com/products/sae-powered-drivers
Todd
I agree, life is WAY too short to be porting with a Dremel. Now that you got the top half taken care of as far as heat goes, have you done anything with the bottom half? Mine is pretty well insulated...
Yes in the case of 2.2/2.5 heads I bolt to the AC boss. I've been porting some LT5 (90-95 ZR1) heads, injector housings, and intake manifolds lately. LS heads too. They all can bolt up in a minute or...
Your link is showing a ferrous burr. Yes you can use them on aluminum, but the non ferrous burrs work a lot better and faster on aluminum. I use an oval burr like pictured for the vast majority of my...