Engine swop???

[smokeejoe]

I currently have a mk1b which i am restoring but keep having thoughts about doing an engine swop but im not sure which direction to go and if i will even be able to achieve such a thing as i have no welding equipitment, is there any swops i could do that wouldnt require any welding? any advice would be great.
cheers

[Paul in the Port]

4-age 20 valve???

I'm going V6 next year myself. Why dont you want to do any welding? Plenty of mobile welders should be able to weld in the mounts in your garage for you if needs be. Cost shouldnt be too much when considered as a part of the whole project. Spraying the resultant new welds would probably be more of an issue to prevent future rust but its only the engine bay so a small compressor and air brush should do the job nicely

[smokeejoe]

How much of a difference is there in performance? is it worth the hassle? yea i guess that is a possibility or i could try to learn to weld, how hard can it be??

[Paul in the Port]

For a one off project - a mobile welder will be cheaper than buying the gear to do it. I've got a MIG myself and learnt building kit cars.

Never been in a V6 powered car but would imagine that with thick end of 200bhp and 190lb ft torque vs 120bhp and around 100lb ft torque, the difference would be well worth it. Its definitely the torque of the V6 that attracts me.

Have you joined TwoBrutal? There's loads of info on engine conversions over there. I may get told off but there ya go - many are on both sites so i dont see the harm. Both forums are great!!

[aw11rally]

Late spec 4A-GZE would be easiest labour wise, no need to change mounts or box, just the wiring. Finding one would be the issue.

AE101 with DLI and forged bottom end as standard is 150/160bhp out of the box (corolla) and with a lot more torque than the 20v. 190bhp max with mods before the SC12 gets things too hot.

V6 or 3S-GTE give more grunt but with more hours/pounds.

[LimeyMk1]

Go for an MZ V6. (see sig)

[cartledge_uk]

Late spec 4A-GZE would be easiest labour wise, no need to change mounts or box, just the wiring. Finding one would be the issue.

AE101 with DLI and forged bottom end as standard is 150/160bhp out of the box (corolla) and with a lot more torque than the 20v. 190bhp max with mods before the SC12 gets things too hot.

V6 or 3S-GTE give more grunt but with more hours/pounds.

Funny you should say that, I have one in the garage i'm tempted to sell

[SuperRedMR2]

How much tim?

[Shadeh]

Go for a supercharger mate, I know they're rare, but would be nice

[aw11rally]

Late spec 4A-GZE would be easiest labour wise, no need to change mounts or box, just the wiring. Finding one would be the issue.

AE101 with DLI and forged bottom end as standard is 150/160bhp out of the box (corolla) and with a lot more torque than the 20v. 190bhp max with mods before the SC12 gets things too hot.

V6 or 3S-GTE give more grunt but with more hours/pounds.

Funny you should say that, I have one in the garage i'm tempted to sell

Funny that, I've got one lying around too.

[smokeejoe]

hello guys computer went down a while back so not been on for a while. Thanks for all the info a v6 would be nice think it may be a little to much for a first transplant. You guys have 4A-GZE's lyin around in the garage?? Wish i had a parts store like that. Are either likely to be up for sale? how much?

[mulaz]

Found this info on tuning the standard engine, could be useful if you do not want the hassle of a engine transplant http://www.billzilla.org/4agmods.htm

[aw11rally]

Tuning the N/A engine is very very expensive. If you can get a cheap set of mild cams and tweak the timing and fuel a little the engine can be made to feel a bit racier. I wouldn't spend more than a few hundred if it's a road car though.

I have no use for the GZE, PM me (and cartledge) if you are interested in one.

[smokeejoe]

pm sent

Ok next stupid questions what other parts would be required for the swop? do i need a GZE loom? ECU? Driveshafts? Do i need to change the fuel pump? Any advice on parts required would be great cheers guys.

[kaiowas]

pm sent

Ok next stupid questions what other parts would be required for the swop? do i need a GZE loom? ECU? Driveshafts? Do i need to change the fuel pump? Any advice on parts required would be great cheers guys.

You'll need the ECU and loom, also make sure you get the alternator regulator (it's a seperate item attached to the loom in the boot on an SC, whereas on the na it's integral to the alternator).

From there you have a couple of options. You can either retain the na gearbox, in which case you don't need to worry about driveshafts or anything plus you will be using the oringinal na mounts. Or you can fit the heavier, stronger SC gearbox too, in which case you'll also need driveshafts, mounts and clutch.

Fuelling wise you can fit the SC pump but dropping the tank is a pita so most people go with retaining the original pump and fitting an after market regulator. Our sprint car is an SC conversion if you need to pop over and have a look at anything to see what's what, and I may have already mentioned to you on your previous visits that I have a complete 'spares or repair' SC looking for a home which might make a good source of parts...

[smokeejoe]

Thanks for the advice phil had thought about getting a complete donour car but unfortunatly just dont have the space. Thanks for the offer will be a great help when i inevitably get stuck.

Is the na gear box strong enough to deal with the extra power? or would i be better off with an SC box?
does the na box bolt straight up to the GZE?

Will a mk2 pump be sufficient to fuel the GZE (i read that they fit straight into the carrier from a mk1??) or will i still need an after market regulator?

Is there a regulator you would recomended?

Really sorry for all the questions

[cartledge_uk]

Thanks for the advice phil had thought about getting a complete donour car but unfortunatly just dont have the space. Thanks for the offer will be a great help when i inevitably get stuck.

Is the na gear box strong enough to deal with the extra power? or would i be better off with an SC box?
does the na box bolt straight up to the GZE?

Will a mk2 pump be sufficient to fuel the GZE (i read that they fit straight into the carrier from a mk1??) or will i still need an after market regulator?

Is there a regulator you would recomended?

Really sorry for all the questions

N/a box can take upto about 250bhp (this has been tested to destruction in teh states, and australia.

It will bolt straight upto the N/a box (use N/a flywheel and clutch)

To save dropping the tank, get an inline pump

[smokeejoe]

Already dropped the tank once and really dont fancy doing that again in a hurry. Excellent will stick with the na box then. Does anybody have any other advice about performing this swop. This will be my first attempt at anything like this, and hopefully im not too out of my depth. Thanks again for all the advice

[Lauren]

Is the na gear box strong enough to deal with the extra power? or would i be better off with an SC box?
does the na box bolt straight up to the GZE?

Will a mk2 pump be sufficient to fuel the GZE (i read that they fit straight into the carrier from a mk1??) or will i still need an after market regulator?

Is there a regulator you would recomended?

Really sorry for all the questions

NA box is fine.

Fueling, get a rising rate fuel pressure regulator (FSE) and get it tuned on a rolling road. Job done.

Doing a conversion (I did this in 2003):

http://www.mr2.net/trackdayqueen/beard.htm

First conversion was 2001.

[smokeejoe]

Thanks
Is there any way of setting the fuel pressure regulator up without a rolling road?
What is the recomended fuel presure for a GZE?
Would a fixed rate regulator not be sufficient?
Great build lauren stainless pipework looks great. Did you encounter many issues during the converson?