5m-ge future engine mods?

[Mk2guy]

http://www.celicasupra.com/forums/sh...ston-Kit/page2

Here is the only place I have seen some one with pistons like mine, but I haven't heard anyone who actually has installed them, so it makes me nervous thinking about installing them. With that high of compression I am not sure if I could use pump gas either. I know headers allow you to run a bit higher compression, the aluminum head helps because aluminum cools quicker, but really I am just guessing. If I went that far I would have to have the block sonic tested to make sure that the cylinder bores can handle it and cryogenically freeze the block to make it stronger. (See the cost is already up there) Then I would have to have the heads flow benched after I ported and polished them, and then get a math guy to help me figure out if the stock cam would would need to be replaced, or if it is ok to use. Custom cams are cheap either. (not to mention getting the crank rebalanced) It would be different if my supra was a tidy one, but it isn't.

Toyota used these piston when they first started grand prix or Le Mans or something like that. They are primitive, Toyota technology at it's Genesis. That can't be a good thing. I don't think they are a good idea, so I am looking for someone who has tried this, to spare me the expense. ( Let me know if you heard of anyone doing this, other wise I will likely get curious and throw money at this project, like an idiot, just to find out.

Also, if you wanted to check if your rings are bad you can do a wet/dry comparison. Do your compression test then put oil, a few drops, in the chamber. It you get more compression with the oil in the chamber, like a lot more, then your rings are probably bad. You might be able to change the rings with the engine in the car. (I would have but my crank was bad)

[CanadianBak'inSupra]

same i roasted my main between cylinders 3 and 4 LOL

i think you should try them out. if your not breaking shit or blowing shit up, your not trying hard enough, LOL
you could always sell them to me...
in the tsrm it says max overbore 84.25
http://www.cygnusx1.net/Supra/Librar...aspx?S=EM&P=48

also try researching cams, heard you can get your cam towers machined for a slightly longer duration/lift.

you should make your own build thread for your car. i am really diggin this overbore talk,

[mechrider89]

if you got the money man then there's nothing to lose, just go with your plan and I would advise upgrading the connecting rods to because you cant be to sure if the stock rods can hold the extra hp/torque plus it never hurts to have that extra security.

Ya I could drop the rotating assembly but the thing is if the rings are bad the block would have to come out anyways for a hone or bore. But I'm just going to do a compression test from there I'll decide what I'm going to do. Plan so far is to paint the talons engine bay and push it out of the car port then pull the supra in for the head removal, send the head to the machine shop for a look over replace whats necessary (possible port and polish) slap'er back together and HOPEFULLY be fine.

[Mk2guy]

You can hone the cylinders with the engine still in the car. Just put a rag in there to protect the crank. (after you pull the oil pan and pull the on rods out) you will have to put a rubber end on the con rod so you don't cratch the crank. It is do able. There is all kinds of ghetto things you can get away with that work just fine.

[mechrider89]

hahaha well knowing me I'd get to pissed off trying to hone it in the car.

[mechrider89]

Received the wiper motor from Bak'in yesterday and installed it, tested it out and it only works on low so I have another problem to find. Only two more possible problems left before everything affiliated with the wiper systems been checked and fixed.

[Mk2guy]

Ok, there could be a grounding issue. Is this on your supra. What all have you replaced? I wasn't paying attention. I would say that it could be the switch but when that happens high speed works and low speeds don't. I will have to look at a wiring diagram to help diagnose anything.

[mechrider89]

well the only things left to change would be the switch in the column or the wcu for the wipers. The WCU was making a lot of noise when my other motor stopped so that's where i'm going to try next, going to try and test resistance and if its good then it have to be the switch its self.