im gonna be continuing to port everything out on my engine this summer... what else could i do at the same time? im not really sure how to shave the head (which gives slightly bigger displacement i think?). im doin this myself with a dremel. valve job is out of the question cause i aint goin near those things unless its a pro who's doing it.
Valve jobs are easy. You just have to take it slow can make sure your settings are correct.
Nothing else I can suggest unless you plan on doing more than just taking the head off. There isn't much you can do to the head without upgrading parts, etc
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Using a Valve grinder. I wouldn't dare on my life do it by hand. I know how to do it prefessionally. By hand would just be praying that you are cutting them at the right angle.
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Shaving the head wouldn't give more displacement, it would actually give a little less, but nothing that would hurt performance. The gains are a result of bumped compression. You would need to run better gas adjust your timing to have it run properly and tune it to take full advantage. The downside is that you do run the risk of valve/piston interference if you measure incorrectly or take too much off. Because its a V engine, you may need to have the lower intake manifold machined to fit properly in the valley.
ok i didnt completely understand what you were talking about. i need to do some more reading on this. is shaving the head the only other kind of thing i could do besides porting?
ok i didnt completely understand what you were talking about. i need to do some more reading on this. is shaving the head the only other kind of thing i could do besides porting?
Yes... you need to do a lot more research. Google?
Head porting is a skill that is honed through experience. It's not something a person can just do because people say it'll add power or increase flow. Porting is more than that. Forget gasket matching and all of those other little tricks. The only time porting a head makes good results, is when an expereinced professional does it. It's not the size, it's the shape. Porting the head isn't always to increase flow, it's increased velocity that is the ultimate goal. Anyone can do big flow... just make the ports really really big... but that doesn't make the motor run better (it's almost always worst).
That being said, shaving the head is literally taking off some meat. It's usually done as maintence/repair for mildy warped or worn heads and the side-effect is increase compression because when the head is shaved, combustion chamber size decreases. The head doesn't determine the displacement, so shaving the head does nothing to displacement. Doesn't increase, nor does it decrease. The other side-effect, it can sometimes make a non-interference motor interference. That's what deep was getting at with valve clearences and stuff.
Aside from that, other things you can do is cuts in the valve seats (angle valve jobs), swirl polishing, clean up, etc... but like you said... best to leave those sorts of jobs to the pros...
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if done properly, you can shave enough off the block to gain some nice CR without dealing with any of the weight of high-CR pistons. Your only issue then is 1) figuring out how much you've shaved, 2) figuring out what your current CR is after the shave 3) making sure you don't crush any valves.
Head porting is easy. You can do it by hand one of two ways and come out in the +++
Milling the heads are like boring and fitting larger pistons. There is sooooo little to gain, why do it. If you send your heads in to a shop to have them do it OK, but if you're going to DIY, don't even waste the week it takes to get done.
Xevuhtess77 you can change the timing belt, or do something like custom, adjustable cam gears. But I can't see them giving you 5hp, even with everything else.
You can try new custom cams (expencive), or possibly get some larger valves installed, but the problem is that if the 1mz heads are like the 3vz heads. There simply isn't any room for larger valves. (Didn't Tony install slightly larger exhaust valves???)
You should port out the exhaust manifolds as you go also. Maybe take a welding class this semister and weld up a new Y-pipe!
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Head porting is easy. You can do it by hand one of two ways and come out in the +++
You obviously don't know what you're talking about there dude... if it were so easy... it wouldn't be a couple hundred bucks to do a good port job now would it?
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Milling the heads are like boring and fitting larger pistons. There is sooooo little to gain, why do it. If you send your heads in to a shop to have them do it OK, but if you're going to DIY, don't even waste the week it takes to get done.
That's not milling the head. Last I heard, there were no pistons in the head, so there is nothing to gain. Head milling is done as maintence with the side-effect of increased compression...
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Xevuhtess77 you can change the timing belt, or do something like custom, adjustable cam gears. But I can't see them giving you 5hp, even with everything else.
You can't do good custom cam gears for the FE heads. There is a single cam gear driving both cams, each cam running off of a slave gear to the other. These gears are set and lashed so they cannot be adjusted independently...
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You should port out the exhaust manifolds as you go also. Maybe take a welding class this semister and weld up a new Y-pipe!
or you can simply buy some headers... ;]
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