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Gearbox Differences

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Gearbox Differences

Postby slightlydodgy » Sat Aug 29, 2009 5:57 pm

I spent some time trying to find out about engine conversions on the net (the commodore motor is getting more probable) and from what I can find the transfercase of the mua boxes cant be used I need the one that attaches to the Aisin(?) box. Has anyone had a chace to compare the 2 as in mounting etc -ie are the rear crossmembers different are the different lenths and need different drive shafts and what models carry the 'other' 1 Thanks Guys and Girls.

By the way my search trew up this beauty http://www.chuckstrucks.net/history.html
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Re: Gearbox Differences

Postby geeves » Sat Aug 29, 2009 7:19 pm

Hilux transfer case is the common choice
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: Gearbox Differences

Postby mulover » Sun Aug 30, 2009 6:10 pm

Hilux gear box and transfer box would probalby be the way to go, then if needed you can get rock crawler gears and stuff like that alot easier.
Oh how i miss my mu, the lux is just not the same :(
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Re: Gearbox Differences

Postby geeves » Sun Aug 30, 2009 7:55 pm

Use the geabox that comes with the comadoor engine and adapt a hilux transfer case to this
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: Gearbox Differences

Postby ONO2HI » Mon Aug 31, 2009 5:19 pm

As Geeves said, is what i plan on doing, except im going to run twin transfers with 4.7 gears so i can crawl it,
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Re: Gearbox Differences

Postby slightlydodgy » Mon Aug 31, 2009 5:39 pm

I thought that my mate had the answer he came across a 90 trooper v6 available after calving. Then I remembered something the local wrecker had said and made a few calls. Would you believe that it would have to be certified. I was told that I could have 2 ientical vehicles (1 4 cyl and 1 v6) swap with no alterations bar motor and box and still have to be cert like the poor guy in wellington who blew up an 1800 primera replaced it with an identical 2litre (bolted and plugged straight in ) but still had to be cert. The inspector I was talking to said it didntmake sense of it only cents
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Re: Gearbox Differences

Postby ONO2HI » Mon Aug 31, 2009 5:55 pm

I dont believe you have to cert a bolt in same make engine unless its something like 20% power increase?? dont quote me for this perfect example is the escort boys swapping there 1.3 to 1.6 or 2.0 engines. i looked into a bigorn 3.2 V6 but was advised against it as they are extremely thirsty and not as good as the commy V6?
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Re: Gearbox Differences

Postby muzila » Mon Aug 31, 2009 7:55 pm

Yup it dont matter what it is if you change the motor size you gotta get it certed. same if you change the box to a differant kind. I ran into that problem when I repowerd my 1300 escort with a escort 1600 rebuilt to lotus specs. Had to get the dam thing certed.. pissed me off I tell ya.
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Re: Gearbox Differences

Postby jezza » Mon Aug 31, 2009 8:26 pm

You don't need cert if you put in a smaller engine made by the same manufacture, so if my 3.1 dies I can bolt in a 2.8 with no cert
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Re: Gearbox Differences

Postby geeves » Tue Sep 01, 2009 6:48 am

sort of true. The motor has to be the same series and mount up to the same mounts and I think it has to be newer
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: Gearbox Differences

Postby slightlydodgy » Tue Sep 01, 2009 5:33 pm

muzila wrote:Yup it dont matter what it is if you change the motor size you gotta get it certed. same if you change the box to a differant kind. I ran into that problem when I repowerd my 1300 escort with a escort 1600 rebuilt to lotus specs. Had to get the dam thing certed.. pissed me off I tell ya.

My first car was a mk1 escort stock when bought after a few fiddles it ended up with a 1300 crossflow with a gt head planed down to the max close ratio gearbox and extractors. 13inch rear wheels (original 12 on front) air shocks you could ring the snot out of it. A guy down the road had the kermit mobile a green mk1 with mk2 front end ,capri rear end and a 1600 bored and stroked to 2litre with a planed 1300 head (valves were same as 1600 but this gave major compession) and close ratio box he could do 160ks in third happily and none of us was cert but still legal

geeves wrote:sort of true. The motor has to be the same series and mount up to the same mounts and I think it has to be newer

Was told must have same block and head configuration -(arent 3.1 and 2.8 heads are different according to another thread), no power output increase use the same mounts and "ancillary" equipment basically the same as what you took out and you arent even allowed to change the exhaust or shift the alternator to fit if you want to follow the rules Imagefrom what I was told
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Re: Gearbox Differences

Postby geeves » Tue Sep 01, 2009 7:20 pm

The same configuration means OHV or OHC twin cam or if your old enough flat head.
Exhaust mods and gearbox mods are ok except the gearbox must still bolt to the original mounts. Seats can be changed but the mounts and seatbelt mounts must be untouched.
You can tweak your existing engine 20% but no more so the standard big exhaust + adjust fuel pump is touch and go. Fitting a turbo etc req cert
Look up the whole rules on the ltsa website
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: Gearbox Differences

Postby muzila » Wed Sep 02, 2009 4:32 pm

Dam they sound nice slightydodgy!!!!

Mine was the 1300 MK1 ripped the 1300 out and put the 1600 in after I had it rebuild to lotus specs that I found at the liburay at the time. Ended up putting triple carbies on it and was for ever tryin to keep them all timed right...

But it was hell fast. I never found out its top speed... but it blew away v6 and v8 commodores lol.. I pissed a lot of people off in that car I tell ya. ha ha ha

aaaarrrr the memories.............. :-)
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Re: Gearbox Differences

Postby slightlydodgy » Wed Sep 02, 2009 5:49 pm

My favourite was my xd falcon 4.1 crossflow with flat tops, extactors 2 and 3/8 smooth pipe with only a coby hot ignition and plugs with a 600 double pumper holley on top with a four on the floor. Painted DB yelllow with a ford blue pinstrip, us 800 mags and blue air filter sticking outof the bonnet. Sounded mean at idle and used to dump on boy racers from a great hieght. My mate who lived 5ks away used to know exactly where I was on the road to his place by the shift Top speed of about 190 but got there real quick. Wouldnt be leagal now
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Re: Gearbox Differences

Postby geeves » Wed Sep 02, 2009 7:45 pm

apart from the loud exhaust it sounds like it should pass cert.
X boss had a genuine mk1 lotus cortina Would change into 4th at 100mph.(8000rpm+) That upset a few v8s The person he sold it to wrapped it round a post within a month.
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: Gearbox Differences

Postby muzila » Thu Sep 03, 2009 12:41 pm

That sounds so familiar...

I had 2 escorts and sold them both to the same guy for his two sons, that proceded to have a headon with each other and wrote them both off.
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