7bolt engine to 6bolt trans

[TRUEeagle]

### up guys. just a quick question. i already looked it up but didnt really get a clear cut answer. but i was wondering if i can use a 7bolt engine with a 6 bolt trans. so if i buy the 7 bolt flywheel, will tht fit in the trans housing and will i have any other complications....oh and this is my 94 talon es non turbo

 

[Bud92gsx]

So you have a 7 bolt motor and 6 bolt trans ready to go into the car..

Or are you not sure what trans you have..If it's a 4g63 trans it's a 7 bolt trans..If it's a 1.8l trans than its neither..

 

[TRUEeagle]

yea its ready to go in. i kno ### trans i have. im just not sure whether the 7 bolt flywheel will fit in the tranny. im not tryin to waste time and money if its not gonna work

 

[19Eclipse90]

It won't be a problem so long as you use the correct flywheel. Non-turbo FWD flywheels are smaller than turbo FWD flywheels and a FWD turbo flywheel will not fit a non-turbo transmission.

 

[g4ebguy90]

Non-turbo's both use the same trans. I read this straight out of the factory service manual. Just make sure to use the correct mounts to.

Turbo's are the ones that have the different trans. I mean there close, but gearing is different or something.

 

[19Eclipse90]

Non-turbo's both use the same trans. I read this straight out of the factory service manual. Just make sure to use the correct mounts to.

Technically, the 1990 non-turbo transmission is different than the 1991-1994.

Turbo's are the ones that have the different trans. I mean there close, but gearing is different or something.

Same gear ratios. You can use a "6-bolt" manual transmission on a "7-bolt" engine and vice versa. Transmissions are not engine specific in this sense.

 

[Slobonator4G63]

Technically, the 1990 non-turbo transmission is different than the 1991-1994.



Same gear ratios. You can use a "6-bolt" manual transmission on a "7-bolt" engine and vice versa. Transmissions are not engine specific in this sense.

Sorrry didn't mean to jack the thread, i've just been look for this information for a week or so. So your saying that you can use a "6 bolt" and a 7 bolt manual awd transmission together? is there anything you have to grind off to make the 7 bolt trans to fit. I thought perhapse I read something saying that on the 6 bolt transmissions that there was like a notch or dowel u had to grind off the 7 bolt transmission to marry up to the 6 bolt. Is that true?

 

[MidShipCivic]

I'm going insane reading this confusion!

7 or 6 bolt? FORGET ABOUT IT! Don't think about the number of bolts on the crankshaft.

Have you ever heard of 6 bolt engine swaps in 2g DSM ?

It's the same whether AUTO or MANUAL doesn't matter the bolt pattern is the same.

1g = 2g same bolt pattern.

 

[brownfinger]

Sorrry didn't mean to jack the thread, i've just been look for this information for a week or so. So your saying that you can use a "6 bolt" and a 7 bolt manual awd transmission together? is there anything you have to grind off to make the 7 bolt trans to fit. I thought perhapse I read something saying that on the 6 bolt transmissions that there was like a notch or dowel u had to grind off the 7 bolt transmission to marry up to the 6 bolt. Is that true?

That dowel pin isn't on the trans. It's on the crank. Any 4G63 trans will bolt up to any 4G63 engine. Period. You will need to use the appropriate flywheel/flex-plate for your trans. End of story. If you're using a 4G63 T crank with a matching NT flywheel (and an NT trans, of course) you may need to remove a dowel pin from the end of the 4G63 T crankshaft. The 4G63 NT crankshaft Does not have a dowel pin. That is the only difference between a 4G63 NT crank and a 4G63 T crankshaft.

 

[bryanwheat]

Don't forget about the starter plate. IT has to be matched to the transmission.

 

[Slobonator4G63]

yes yes i mean is a 6 bolt swap im doing. I plan to marry up the 7 bolt 4g63t transmission with the 6 bolt 4g63t. So possible starter plate problem and pr aligning the starter got it. If you guys have more in put on this topic id be more then willing to write it down and consider you proposals. Im open to suggestions if there is anyone that has done this swap b4 and had any problems. please speak up thanks
Slobonator4g63

 

[MidShipCivic]

yes yes i mean is a 6 bolt swap im doing. I plan to marry up the 7 bolt 4g63t transmission with the 6 bolt 4g63t. So possible starter plate problem and pr aligning the starter got it. If you guys have more in put on this topic id be more then willing to write it down and consider you proposals. Im open to suggestions if there is anyone that has done this swap b4 and had any problems. please speak up thanks
Slobonator4g63

LoL there no more pioneering for this. There is a lot of people that have done this already.

If you take the engine out of a 7bolt awd then you can use the starter plate (but I'm certain you can use your own that comes off YOUR 1g)

You cannot use FWD starter plates on AWD.

2g DSM must use their own starter plates too.

 

[Slobonator4G63]

Well see my motor is a 91 awd tsi auto and im taking that and the transmissions plate and trying to marry it up into my late model 92 awd tsi 5 spd. From what i gather it should work from what you are saying i mean i've look though these threads it just is a little hard. When you go to search you dont always get your answer right away.

 

[bryanwheat]

As long as you have the right flywheel, and the right starter plate than it will bolt in as the old one came out, nothing different. By the way transmissions aren't differentiated by what motor they are bolted to, it is either 1g or 2g, not 6 bolt or 7 bolt.

 

[MidShipCivic]

Well see my motor is a 91 awd tsi auto and im taking that and the transmissions plate and trying to marry it up into my late model 92 awd tsi 5 spd. From what i gather it should work from what you are saying i mean i've look though these threads it just is a little hard. When you go to search you dont always get your answer right away.

Your 5 speed transmission plate will work on that you don't need to get anything else.

 

[19Eclipse90]

Well see my motor is a 91 awd tsi auto and im taking that and the transmissions plate and trying to marry it up into my late model 92 awd tsi 5 spd. From what i gather it should work from what you are saying i mean i've look though these threads it just is a little hard. When you go to search you dont always get your answer right away.

It will work, but there is a couple things you need to remember to do. First to the engine coming out of the automatic car: remove the crankshaft/pilot bushing! What is the that? Look here: http://www.dsmtuners.com/forums/newbie-forum/392903-engine-swap-now-wont-turn-locked-up.html#post152478285.

Don't see anything? Check this post for a before picture with the bushing in place and an after pic with the bushing removed: http://www.dsmtuners.com/forums/newbie-forum/392903-engine-swap-now-wont-turn-locked-up.html#post152479649.

How to get that sucker out? Well there's a number of ways, but this method seems to work really well: http://www.dsmtuners.com/forums/automatic-tranny/227564-flex-plate-spacer-removal.html#post151332535.

After that is removed, another issue you might encounter is the length of flywheel bolts. On a 7-bolt with manual transmission, they are 21.2mm long. On a 6-bolt with manual transmission, they are 22.5mm long. Get the right flywheel bolts (Mitsubishi part number MD040557 for a 6-bolt). The flex plate bolts from the automatic car won't even be close.

 

[MidShipCivic]

It will work, but there is a couple things you need to remember to do. First to the engine coming out of the automatic car: remove the crankshaft/pilot bushing! What is the that? Look here: http://www.dsmtuners.com/forums/newbie-forum/392903-engine-swap-now-wont-turn-locked-up.html#post152478285.

Don't see anything? Check this post for a before picture with the bushing in place and an after pic with the bushing removed: http://www.dsmtuners.com/forums/newbie-forum/392903-engine-swap-now-wont-turn-locked-up.html#post152479649.

How to get that sucker out? Well there's a number of ways, but this method seems to work really well: http://www.dsmtuners.com/forums/automatic-tranny/227564-flex-plate-spacer-removal.html#post151332535.

After that is removed, another issue you might encounter is the length of flywheel bolts. On a 7-bolt with manual transmission, they are 21.2mm long. On a 6-bolt with manual transmission, they are 22.5mm long. Get the right flywheel bolts (Mitsubishi part number MD040557 for a 6-bolt). The flex plate bolts from the automatic car won't even be close.

Although I've pulled my motors out of 94-98 galants, I don't remember doing this but the 7 bolt 100mm paper weight crank I have here has it on the end of the flange I don't see how an MT flywheel can bolt on the eccentric spacer it's too far out ! I guess that's how knew to take this off last year .

 

[Slobonator4G63]

Well boys thank you very much for the support and info from my fellow dmser's. I tried some local but they are a little help. But personally I like to here from some people that have been around the block a few times. So seeing how im using a 1g transmission a (7bolt) it should shift pretty flawlessly. I mean it's still the same linkage just a different yr motor.