my future project: '77 colt. suggestions?
Moderators: DJpowerHaus, mattmartindrift
my future project: '77 colt. suggestions?
i want to do a swap on my 1977 dodge colt. (usdm's version of the 1st gen jdm mitsubishi lancer) right now it has the 1.6 4g39 with about 80hp.
a guy i knew told me a guy he knew... or something... that did a 4g63 swap to a d50 pickup so i thought that id look into it for doing it to my car. right now im just gathering info. i have read all of the stuff on this site but i need some more. i know i want to use an rx-7 gear box. there is a b2600 with the g54b at a local scrapyard so i can get the bell housing and maybe the tail housing. im sure i can find an r-seiries gearbox on the internet somewhere. what i need to know is can i find a wide block 4g63 anywhere easily or would it be easier to get a 4g64 wide block and put a dohc head on it. any and all info is appreciated! tell me what you think!!
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DJpowerHaus
- Sir Post A Lot
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There is another user on this board with a Colt, but it is set up as a drag car (which it does very well).
As for the B2600 transmission. If its RWD and not 4WD, you should be able to use the whole transmission. This will save you the trouble of finding an RX7 transmission.
You could probably find a 2.0L wideblock if you wanted to, but you'd probably want to swap the pistons and rebuild (even if it just means just honing the bores and cleaning and painting the block.) If you go this far you might has well have gone 2.4 in the first place. 2.4s cost no more than a 2.0 if you are going with forged pistons anyway. There are both wide and narrow versions of this block.
If you go narrow, you can use a stock 2.0L from an eclipse and that will save you some money. Also, you may be coming into this at just the right time to try a narrow block with the W58 adapter bellhousing. There is some info in the For Sale section of the site.
If you go wide you can use either a Starion or B2600 transmission. For the colt, you might be okay with a Starion transmission.
What it comes down to is your power goals which determine what transmission option you want to go with. Once you get over 300hp and forged pistons are on the list, you have a lot more options.
As for the B2600 transmission. If its RWD and not 4WD, you should be able to use the whole transmission. This will save you the trouble of finding an RX7 transmission.
You could probably find a 2.0L wideblock if you wanted to, but you'd probably want to swap the pistons and rebuild (even if it just means just honing the bores and cleaning and painting the block.) If you go this far you might has well have gone 2.4 in the first place. 2.4s cost no more than a 2.0 if you are going with forged pistons anyway. There are both wide and narrow versions of this block.
If you go narrow, you can use a stock 2.0L from an eclipse and that will save you some money. Also, you may be coming into this at just the right time to try a narrow block with the W58 adapter bellhousing. There is some info in the For Sale section of the site.
If you go wide you can use either a Starion or B2600 transmission. For the colt, you might be okay with a Starion transmission.
What it comes down to is your power goals which determine what transmission option you want to go with. Once you get over 300hp and forged pistons are on the list, you have a lot more options.

Getting the engine bolted in is about 10% of the way there.
The next 80% can go quickly with help and skill.
That last 10% takes about as long as the 90% that came before it.
ok, well i think the b2600 is 4wd. but there is some rx-7s in another local scrapyard so i could find a gearbox. and if i do that route i need a wideblock, so what cars can i find a 2.0 or 2.4 wideblock? i think it said somewhere in your site that all the dsm's had narrow blocks so thats outta the question. and right away i know im not going to have too much power but i want to leave my options open so i want a tranny that can handle it right away. and with a narrow block i can use the w58 with the adapter... but isnt a trans like that really expencive? and isnt it pretty big. i might have to do some surgery to my colt to get that to fit. thanks for the help!
DJpowerHaus wrote:There is another user on this board with a Colt, but it is set up as a drag car (which it does very well).
As for the B2600 transmission. If its RWD and not 4WD, you should be able to use the whole transmission. This will save you the trouble of finding an RX7 transmission.
You could probably find a 2.0L wideblock if you wanted to, but you'd probably want to swap the pistons and rebuild (even if it just means just honing the bores and cleaning and painting the block.) If you go this far you might has well have gone 2.4 in the first place. 2.4s cost no more than a 2.0 if you are going with forged pistons anyway. There are both wide and narrow versions of this block.
If you go narrow, you can use a stock 2.0L from an eclipse and that will save you some money. Also, you may be coming into this at just the right time to try a narrow block with the W58 adapter bellhousing. There is some info in the For Sale section of the site.
If you go wide you can use either a Starion or B2600 transmission. For the colt, you might be okay with a Starion transmission.
What it comes down to is your power goals which determine what transmission option you want to go with. Once you get over 300hp and forged pistons are on the list, you have a lot more options.
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DJpowerHaus
- Sir Post A Lot
- Posts: 1779
- Joined: Wed Apr 07, 2004 3:24 pm
- Location: Baltimore, MD
- Contact:
You could use a B2600 RWD transmission too. You might be able to convert the 4WD transmission, but I doubt it. Either way you CAN use the B2600 4WD bellhousing with the RX7 transmission. How much power do you plan on making.. really? 400? 500? 600? Anything over 500hp plan on having over $10,000 into it by the time you're done.Mike wrote:Good luck finding a 2.0L wideblock, they're about as hard to find here as sasquache. Remember, it needs to be a Turbo II (FC3S) Rx-7 for the right transmission. Nothing else will work.
As for the W58 adpater bellhousing, we do not have prices yet but I imagine it'll be over $200 and you'll still need need to make a custom driveshaft and transmission crossmember.
In a colt a Starion transmission will probably handle around 400hp and will save LOTS of money if the Colt used the KM-132 transmission. I cant imagine wanting more power than that unless you're making it a track only drag car. 200hp is already too much power in a colt for drifting.
What kind of steering setup is in the colt?

Getting the engine bolted in is about 10% of the way there.
The next 80% can go quickly with help and skill.
That last 10% takes about as long as the 90% that came before it.
well i want to make at the most 400-500hp some day but locally i have access to the bellhousing and an FC trans so thats what i wanna do. the stock steering is paralelagram w/o power. im going to put a 240sx rack in it some day soon. do you know what specific cars had wideblocks so i could look for one? or how to easily check. i found a jdm 2.4 out of a mitsu truck on ebay but i dont know if it is a wideblock or not. there are quite alot of scrapyards around me that i could look for one too. also what do you think about a rear end? i know the stock pos in my colt probly wont handle more than 150hp. my friend is going to upgrade his sr20 240sx to a 350z rear end so he said i could buy his old rear end with the lsd already in it. and also, i know most of you guys deal with starquests but do you know where i could get suspention parts for it? or am i gonna have to make a custom set-up. thanks a lot!
I own a 77 Colt with 4G63 in it and a rearend from 74-77 (I am not real sure on the interchange, if you are interested I will verify). I just bolted it in and had a driveshaft made with the mighty max forward yoke (that will press onto your stock driveshaft, they use the same U joint) and the rear end piece from the datsun. You see, I measured every single small truck rear end till I found one that matched from saddle to saddle and was narrow enough to fit. You will have to use the leaf spring brackets from the truck though, and a set of shocks from a 71 datsun P/U seemed to bolt right in and have worked fine so far. The brakes from the truck are much better than the stockers anyways.
To be honest I went 11.90 with the stock colt rearend (with a lincoln locked center section) before it kicked an axle one night in a little unsanctioned event I was partaking in, putting me up over the median. I have gone as fast at the track as 11.36 @ 127 on the datsun P/U rearend (also lincoln locked) without any problems. BTW I used a stock steel wheel with a hoosier 26 8.5 14 quick time pro, and it fit with only minor lip trimming. The tires will still occasionally rub if you are street driving alot with the pressures down to race settings, but I just ignore it
. Plus everyone will always wonder why you have 4 lug on the front and 6 lug in the rear. 
To be honest I went 11.90 with the stock colt rearend (with a lincoln locked center section) before it kicked an axle one night in a little unsanctioned event I was partaking in, putting me up over the median. I have gone as fast at the track as 11.36 @ 127 on the datsun P/U rearend (also lincoln locked) without any problems. BTW I used a stock steel wheel with a hoosier 26 8.5 14 quick time pro, and it fit with only minor lip trimming. The tires will still occasionally rub if you are street driving alot with the pressures down to race settings, but I just ignore it
KILL
well my front pinion bearing blew apart a while back and it mared up the gears a little when it all locked up but when i took it apart it wasnt too bad so i had a new bearing pressed it and drove it even though it made a little noise... but now the front seal it gone so so gl-5 holds in there and i figured its time for a complete upgrade instead of rebuilding the old one again
i dont understand, you have a rearend from a 74-77 what? and im going to be using the mazda tranny so ill need something different for a driveshaft. and whats a lincoln locker? i greatly appreciate any info you can give me... thanks a bunch!
i dont understand, you have a rearend from a 74-77 what? and im going to be using the mazda tranny so ill need something different for a driveshaft. and whats a lincoln locker? i greatly appreciate any info you can give me... thanks a bunch!
tumuchNOS wrote:I own a 77 Colt with 4G63 in it and a rearend from 74-77 (I am not real sure on the interchange, if you are interested I will verify). I just bolted it in and had a driveshaft made with the mighty max forward yoke (that will press onto your stock driveshaft, they use the same U joint) and the rear end piece from the datsun. You see, I measured every single small truck rear end till I found one that matched from saddle to saddle and was narrow enough to fit. You will have to use the leaf spring brackets from the truck though, and a set of shocks from a 71 datsun P/U seemed to bolt right in and have worked fine so far. The brakes from the truck are much better than the stockers anyways.
To be honest I went 11.90 with the stock colt rearend (with a lincoln locked center section) before it kicked an axle one night in a little unsanctioned event I was partaking in, putting me up over the median. I have gone as fast at the track as 11.36 @ 127 on the datsun P/U rearend (also lincoln locked) without any problems. BTW I used a stock steel wheel with a hoosier 26 8.5 14 quick time pro, and it fit with only minor lip trimming. The tires will still occasionally rub if you are street driving alot with the pressures down to race settings, but I just ignore it. Plus everyone will always wonder why you have 4 lug on the front and 6 lug in the rear.
74-77 Datsun pick up. Most of them have 4:30 gears, but if you run a big enough tire and a 5 speed it will be fine. A lincoln Locker is taking your loaded center section to some lunatic with a welder and letting him "lock it up"
. It makes for interesting turning cause it is identical to having a spool. The ring and pinion is pretty beefey and I will soon have better "track proven" results. Make sure you get the last 6" of the driveshaft from the Datsun P/U, you will need it.
KILL
ah... i knew what that was... just didnt know that was the term for it.
im not sure if im worried about the width because im going to be using either a 240sx or a rx-7 front subframe so i might just widen the whole stance of it with a rearend of similar width. probly an fb rx-7 gsl (lsd)
what did you do for front susp?
any pics? id love to see them...
im not sure if im worried about the width because im going to be using either a 240sx or a rx-7 front subframe so i might just widen the whole stance of it with a rearend of similar width. probly an fb rx-7 gsl (lsd)
what did you do for front susp?
any pics? id love to see them...
tumuchNOS wrote:74-77 Datsun pick up. Most of them have 4:30 gears, but if you run a big enough tire and a 5 speed it will be fine. A lincoln Locker is taking your loaded center section to some lunatic with a welder and letting him "lock it up". It makes for interesting turning cause it is identical to having a spool. The ring and pinion is pretty beefey and I will soon have better "track proven" results. Make sure you get the last 6" of the driveshaft from the Datsun P/U, you will need it.
