Engine Gurus (Simon etc)

cymatty · 29 May 2007 at 15:52

Hi I am looking at a GT4 it has a forged engine, here is the specs of the standard engine.

http://www.gtfours.co.uk/stuff/facts/205/facts.htm

This is what has been replaced.

"Was JE pistons, AE Bearings all round, new gaskets/seals on whole engine, new pumps, and other bits and bobs."

The pistons have gone from 86mm to 86.5mm will that make much of a difference to the cc of the engine?

Does anything else need doing to strengthen the engine and are these good components.

Thanks

Zip · 29 May 2007 at 15:58

Heavy buggers they are

3S-GTE I think thats the engine in the MK2 MR2 isnt it?

cymatty · 29 May 2007 at 15:59

Zip said:
Heavy buggers they are

3S-GTE I think thats the engine in the MK2 MR2 isnt it?

Yep.

kaiowas · 29 May 2007 at 15:59

I calculate the change in capacity to be an increase from 1998cc to 2045cc which is basically bugger all.

helpimcrap · 29 May 2007 at 16:01

sounds like a standard rebore for wear and tear to me.

dont mfrs have about 0.1mm overbore tolerences in the block for that.

Zip · 29 May 2007 at 16:01

cymatty said:
Yep.

Im pretty suire its a strong engine as it is but i think there is one weakness about it, i just cant remember what right now.

What are you planning on doing with it?

cymatty · 29 May 2007 at 16:03

Zip said:
Im pretty suire its a strong engine as it is but i think there is one weakness about it, i just cant remember what right now.

What are you planning on doing with it?

Not a lot really and the weak link for that engine was piston ringlands but as they are bigger and new in the above engine then it does not matter.

[TW]Fox · 29 May 2007 at 16:04

Zip said:
Im pretty suire its a strong engine as it is but i think there is one weakness about it, i just cant remember what right now.

Handy.

What are you planning on doing with it?

Buying it?

Zip · 29 May 2007 at 16:04

cymatty said:
Not a lot really and the weak link for that engine was piston ringlands but as they are bigger and new in the above engine then it does not matter.

Then you probably wont have any problem and might aswell get it

Hate · 29 May 2007 at 16:05

well, my ST205 engine has just cracked its block, so they aren't bulletproof

they suffer from ringland failure and chocolate pistons.

cymatty · 29 May 2007 at 16:05

Hate said:
well, my ST205 engine has just cracked its block, so they aren't bulletproof

they suffer from ringland failure and chocolate pistons.

So they should be ok with the new pistons then?

Hate · 29 May 2007 at 16:09

who did the rebuild?

cymatty · 29 May 2007 at 16:10

Hate said:
who did the rebuild?

Someone on the GT4oc for Mike4.1Morgan's old car, which is now with GottaGoTurbo.

Zip · 29 May 2007 at 16:11

[TW]Fox said:
Handy.

Buying it?

Well obviously, but if hes not going to push too much power through it with a turbo then he shouldnt need to worry too much.

cymatty · 29 May 2007 at 16:12

Zip said:
Well obviously, but if hes not going to push too much power through it with a turbo then he shouldnt need to worry too much.

I have plans for 300bhp-320bhp.

Hate · 29 May 2007 at 16:13

300 is fine on a stock engine, you'll be OK.

is it a red car? iirc a mate of mine has just bought it

cymatty · 29 May 2007 at 16:13

Hate said:
300 is fine on a stock engine, you'll be OK.

is it a red car? iirc a mate of mine has just bought it

Nope it is a silver car with a choice of two motors, the above and a standard UK engine for less dollar.

agw_01 · 29 May 2007 at 16:14

[TW]Fox said:
Handy.

Buying it?

Oh yeah Fox, because your post was just so helpful

Si, what's the matter? Don't you trust what I was saying?

cymatty · 29 May 2007 at 16:15

agw_01 said:
Oh yeah Fox, because your post was just so helpful

Si, what's the matter? Don't you trust what I was saying?

Yes, but as Simon has had some of the parts thought it would be good to speak to him also.

cymatty · 29 May 2007 at 21:02

Bump incase any engine gurus missed it lol.