Questions about engine rebuild, specifically the 7afe Options

[Jeremy1210]

My engine has over 200K on it and I am going to do a rebuild soon. I ahve a few questions about what I should do. I would like to eventually add a turbo so Im not sure what to actually buy. What kind of rods, pistons, etc... for the best compression. I know that a lower comp is better for boost, but If it takes me a while to add a turbo, will the lower comp be more of a hassle until I add the turbo?

Also, what is the talk of a 3 angle valve job on the head? I have an idea, but Im not exactly sure.

Then theres this link of a rebuild kit Kit Is this a good thing to get?

I have looked this stuff up, but I'm still in the learning stage of going about a turbo set-up. I have read it all on this site and I'm just looking for more helpful information about the engine rebuilding

Jeremy

This post has been edited by Jeremy1210: Feb 9, 2005 - 10:08 PM

[thedevilmaycrie]

get the kit from toyota... they are the best parts...

[FallenHero]

ebay has 7a re-build kits from toyota also. For pistons and such I would also go Toyota.

[Turbo_Lover]

If you are going to drop the comp. then you will lose power. So if you are going to wait a while then you might want to think about this. Also if you aren't going over about 7-9 pounds of boost then you can still run stock comp. You just need to get stronger pistons so that they don't wear out sooner. Other then that go with a re-build kit from toyota or find a company that can help you out with making your own re-build kit.

[Hanyo]

this is my $.o2

from past experience on rebuilding high milage engines. I would recomend getting a shop to replace the valve stem guilds and get the cyclinder honed. This is probably a good time to get some 4ag(z)e pistions in. ( i dont know much about this so you will have to ask the gods of 6gc aka dmc doggy nik.. just to list a few) From my perspective, droping compression is as simple as getting a thicker head gasket, because there isnt much after market rods and pistions for the 7afe.. ( i know, i know.. i'm gonna get slapped for saying this.) i just got to stur up some thoughts for kwanza (and others) to straighten things out..

it will be interesting reading this post tomarrow... flame away at me guys!!!!! muahahahaha i hope this helps.

btw 3 angle valve job helps increase air flow and creates a better seal on the valve seat.. hope i didnt tell you something you already know.

[dustin15brown]

So what was the verdict on this guys? I plan on going to a T-3 turbo at some point at leave it set at 10 ish psi..... What all needs to be re-done and what rebuild kit should i go with? BTW I have 167k on my car and engine

[FallenHero]

Pauter rods=700. 4agze pistons with a proper head gasket=3-400$

That's a grand worth right there.

[playr158]

pauter rods = 715$

i wouldn't suggest the 4agze pistons really since it will give you a really high unknown cr and using a 2mm headgasket will drop it but will potentially be weaker

for my setup i'm goin to look into custom low comp pistons for the 7afe so i know my cr and have strong pistons aka forged

[FallenHero]

4ag are forged, but I agree about the compression. I was throwing that out as the economy option. But hey, if you're going with pauter rods, might as well do it right.

[playr158]

exactly why spend 715 on rods if your goin to goof up your pistons?

just doesn't make sense to half ass it

[dustin15brown]

damn guys that puts the engine/turbo at like 3-4k total if i'm correct in doing it the "right way"

[FallenHero]

Yea, but doning it right allows you more power than a stock 3s. Doing it cheap is leaving in the stock parts and running under ten pounds of boost. That would be enough for about 170-190whp depending on the set up. For some people though, that's just not enough.

ahem, nik.

[nik]

what can i say i want more boost