7a rebuild and Vortech Supercharger Options

[al94st]

So first off, I've been using this forum a lot for reference and information in the past few months and it's a great tool for anyone who owns a Celica, so thanks to everyone who puts up good information.
I'm in the process of rebuilding my 7afe. It had 136000 on it when i pulled it out, but it hardly looked like 30000 were on it once i opened it up except for some oil sludge. I purchased a V-5 vortech f-trim to put on after i get the car running again, but I figured I'd share a few pics of the rebuild and update some more when I get to the fun stuff.
Pulled the engine in Feb, (i travel around the world a lot, so I've been off and on with this project) brought block and head to my machinist. Block only needed a fine hone. Head didn't need much, but had a valve job done just to freshen it up since 16 yrs on the valve springs is probably enough. Started rebuilding on Wednesday and relaxed today, I might finish rebuilding tomorrow.


Block painted and piston one reinstalled.




nice picture of the little 7a rods


head and cams installed, water pump on


timing belt installed

This post has been edited by al94st: Nov 1, 2011 - 5:35 AM

[presure2]

Thats about what id expect without an intercooler or tuning.
can you clock the outlet so it points down and run the ic pipe down low to get away from the header?
I think water/meth injection would work wonders for ya, especially since your running no ic, and how close that pipe is to the header.
keep learning and progressing, next thing I would invest in would be a basic water/meth injection kit, and a used safcII, then get on a dyno again, and do some tuning.
i wouldn't be surprised to see ya gain 20whp or more with those 2 mods, or an ic and safcII

:edit:
Looking at the chart again, your,not really making any significant boost till almost 4rpm, which is way after the tq peak for the 7afe (iirc its something like 2800rpm)
would a smaller pully make boost sooner, or would you need a smaller charger, similar to turbo exhaust housing sizing?

[al94st]

Thats about what id expect without an intercooler or tuning.
can you clock the outlet so it points down and run the ic pipe down low to get away from the header?
I think water/meth injection would work wonders for ya, especially since your running no ic, and how close that pipe is to the header.
keep learning and progressing, next thing I would invest in would be a basic water/meth injection kit, and a used safcII, then get on a dyno again, and do some tuning.
i wouldn't be surprised to see ya gain 20whp or more with those 2 mods, or an ic and safcII

:edit:
Looking at the chart again, your,not really making any significant boost till almost 4rpm, which is way after the tq peak for the 7afe (iirc its something like 2800rpm)
would a smaller pully make boost sooner, or would you need a smaller charger, similar to turbo exhaust housing sizing?

I can clock it but I'm not sure about how far. I'll look into that. I do have header wrap on it at the moment tho, but yea it's realy close. I'll probably be looking into an intercooler. A smaller pulley should bring it in sooner I think. It's proportional to RPM, so I can't see why it wouldn't come in sooner since it will be spinning faster at a lower engine RPM. I do think it's a little large though, considering that's almost 50 flywheel hp on ~5lbs, so I think getting it spinning quicker will help. It's also hard to see on that graph but I must've had some belt slip b/c boost is bouncing in the low r's as well. On most of the runs boost was right between 4.5-5. Thanks for the input Manny.