Corolla gt-s head

[MR2Kyle]

Any idea where i could find one of these?
Thanks

[LimeyMk1]

Would that be a small port head Kyle?

[Lauren]

Corolla GTS is ordinarily American speak for AE86.

Not sure what you're after.

[MartG]

The GT-S name was applied to various incarnations of NA Corolla/Sprinter models eg. AE86, AE92, AE98 etc. so a 'GT-S head' could be almost any version of 4A-GE head

[elbon50]

Any idea where i could find one of these?
Thanks

What ideas do you have in mind for the GT-S head Kyle ?

[MR2Kyle]

Well i have been skimming over the tinternet and found a webpage about engine swaps and there is a guy there who put the big port head age engine in his mk1....i thought you would just be able to change the standard head for that one.... Heres a link to the web page >> www . ultimatecarpage . com / forum / show thread . php ? t= 9010

Go down to nigels post and you might see why im interested

Thanks

[MR2Kyle]

Sorry had to put spaces in the web address as it wouldnt let me post it otherwise

[MartG]

Well i have been skimming over the tinternet and found a webpage about engine swaps and there is a guy there who put the big port head age engine in his mk1....

Errr - the Mk1 came with the bigport engine as standard, the 1a with the 'blue top' 3 rib block version, the 1b with the 'red top' 7 rib block one. All T-VIS 4A-GE engines were big port, as were all 4A-GZEs fitted to MR2s ( and to AE92s until about mid 1990 when the non-TVIS smallport made an appearance ).

If you mean you want to put a smallport 4A in a Mk1, you need to swap more than just the head - you need the entire engine, engine loom and ECU as the head was only one of the differences between the engines ( T-VIS won't fit on a smallport head for intance )

[MR2Kyle]

Ah i see.... well....thats that then lol

[elbon50]

Ah i see.... well....thats that then lol

Perhaps you could think about swapping in a smallport engine & ancillaries Kyle ?

[LimeyMk1]

Finding one is the problem.

[kevin..in]

I ran a small port in a couple of MK1s for about 5 years, in std tune they are not much different to the big port with TVIS just a little more torque low down, i ran mine with std crossover ecu (not the best set up) Bill Hulme has run with both the AE92 ECU and his home made adapter to fit TVIS to the small port head in the past, you can get the TVIS to small port adapters from Evil bay in the US, to be honest though unless you want to do some tuning and spend lots of pennies there are no significant gains to be had

[kevin..in]

Well i have been skimming over the tinternet and found a webpage about engine swaps and there is a guy there who put the big port head age engine in his mk1....

( and to AE92s until about mid 1990 when the non-TVIS smallport made an appearance ).
May '89 is start of production date for small port 4-AGE

( T-VIS won't fit on a smallport head for intance )

there are adaptors availible for this if you want, though there are as many pro's as cons for fitting/not fitting T-VIS to a small port

[kevin..in]

head age engine in his mk1....i thought you would just be able to change the standard head for that one....
Thanks

small port has an uprated oiling system so most of the + points are from the bottom end, stronger crank higher flow oil pump etc. google 4-AGE oil squirter for the info

[elbon50]

This is the thread that Kyle was referring to

Seems to contain some incorrect information

http://www.ultimatecarpage.com/forum/sh ... php?t=9010

[MartG]

This is the thread that Kyle was referring to

Seems to contain some incorrect information

http://www.ultimatecarpage.com/forum/sh ... php?t=9010

Further skewed by being a US based forum - the US 4A engines have yet another spec due to their emission requirements e.g. their 1a bluetops gave about 115bhp whereas ours delivered 123bhp

[SuperRedMR2]

To add more issues, I have a red top producing 115 hp

[MartG]

To add more issues, I have a red top producing 115 hp

That's a low compression one isn't it, not UK spec

[SuperRedMR2]

It's a Corolla lump with low comp pistons US / EURO version

[stenky]

My 1b red-black top bigport is rated at 115hp because UK 1b cars use MAP, but EU 1b cars use AFM (a huuuge restriction)