ta22 1uzfe conversion

[dreadedta22]

Ok I've had a bit of a think about this and i think i have figured out how to make it within transport authorities rules. I am no mechanic im originally panel beater by trade now spray painter so here goes, i am 49cc outside of there rules or 6.25 cc per cylinder, or you can look at it from the other side roughly 7kgs short of where the car needs to be.

effectively my goal would be to lower the displacement of the 1uz from what i can tell. If i am to ever so slightly raise the piston height, shortening The stroke, raising compression, and lowering the displacement.

I know this seems like alot of work so i have a secondary question and it is if i shave the head will that change displacement size or just raise compression?? (basically is the combustion chamber part of the equation to measure displacement or is it as simple as bore x stroke)

I am very keen on the idea of this conversion as you may be able to tell but surely the transport department can understand if an engine is 49cc out of there regulations and i am willing to lower the engine size and effectively increase horsepower by doing so there rule is fairly ineffective at all.

Please correct me if wrong (i spend alot of time around solvents)

[ian]

it would be easier to fit the uz into a 23/28 as the engine bay is longer , but just fits in the 22
i have put a 1uz in a 28, it was a bolt in conversion , with only minor fabrication of the engine mounts
you could still keep the steering box but that would mean having a very restrictive exhaust on the rear outlet , plus it would heat up the steering box
there is a guy in moorabin vic who does a billet flywheel , a little exy but it is light
hadfeild do the bellhousing also a little on the expensive side the tailshaft fits straight up to a supra w58 and comes up the original gear lever hole
alloy radiators are reasonably priced ,you only need about 10 of the fifty million wires to get it running
you should be able to hook it straight in to the factory tacho , as the 1uz pulse runs off 1 bank
someone else with better knowledge can help you there
it is a worthwhile sensible conversion , if your state laws allow it
ian

[dreadedta22]

Thanks, alot of useful info in there Ian. And a big thanks to all who have posted its been very helpful bouncing ideas off you all.

I have my heart set on this conversion. I have a meeting arranged with a credible engineer next week so i suppose all will be cleared up and set out a build plan from there.

[greg]

In answer to your displacement question, altering the heads will make no difference as it is only bore X stroke.
Cheers Greg.

[dreadedta22]

Cheers for that, any idea on using a piston with a lower pin height, effectively raising the piston slightly i understand the piston travel is dictated by the stroke of the crank but if the piston is sitting higher at bdc it will have not traveled as far. But obviously to high and it will hit the head at top dead centre i only need to squeeze 6.25cc per cylinder.

So i think my question in terms of this is if the piston is slightly higher, will the crown of the piston sitting higher in the combustion chamber and higher at bdc shorten the stroke and that would achieve my desired result???

[dumbass]

I don't think the authorities will give a fk if u lower
the capacity
they will still say it's still over the limit
trying to prove u took the apacity down will be hard
and not worth it

[greg]

Changing the pistons will not change the capacity unless you sleeve the bore and fit smaller diameter pistons and to alter your stroke the crank has to be altered. tongue in cheek suggestion,if it just has to be a V8 why not a BMW 3.5 litre one .problem solvered.
Cheers Greg.

[lexsmaz]

As has been said, the distance the piston travel's is still the same no matter where you put the piston pin, so displacement will not change & Authorities are not going to acknowledge a destroked or sleeved 1UZ & no way is it worth the effort either, they are a good robust motor but unless you do some big things to it no way will it beat some smaller displacement turbo motor .. Except you have a V8 note ..

[dreadedta22]

Ok so I've set up a little meeting with an engineer next week so fingers crossed hes not an absolute asshole. Suppose time to start panel and Paint now dammit!!!

Once again. Thanks to you all for your input