ok i wnat to do the sohc to dohc on my 93 sl and i know i need the computer to convert form tbi to tpi but is there anything i need to do to the wiring harness? also doi NEED pistons or will the stock sohc ones work thanks
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dohc swap harness?
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hell be easier to get the dohc motor with the harness connected. that would probably make the job that much easier. and yes you need the harness, and you can keep the pistons if you actually go that route, but compression will be lower then a stock dohc.Ian---The Fat Ass
1995 SL2-High compression engine FOR SALE
2010 Chevy Cobalt SS- tuned with plenty of goodness
2002 SC2-New daily
2017 Kawasaki Ninja 650 KRT- got a stupid deal
2003 Ford Taurus SES- free daily beater
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you'll need the DOHC harness from a 93-94 so it will plug into the under-hood junction box, a DOHC PCM and a gauge cluster... thats about all I remember changing
I did this swap myself if you need any pointers
if I think of sumpin else, I'll let ya know
I don't know what all this talk of pistons is about... are you doing a WHOLE swap (from TBI to DOHC) or just a head swap?[img width=600 height=150]http://www.sixthsphere.com/storage2/images/wejag665buljx09mu77e.jpg[/img]<br />99SL2 w/97SC2M Engine/Trans Swap, CAI, 2.25 Custom Exhaust
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yes i want to do the whole swap but since the block and everything is the same any way il just keep that and what exactly do i need to complete the swap im keeping the same trans why would that make any difference to he guages... and the pcm is a given because of the tbi to tpi, and i wanted to make it a turbo eventually so wouldnt the lower comp. be a good thing??? i was told you should lower the compression on any motor to put on a turbo, but this guy has a cuople of spun bearings upstairs
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you mean tbi to mpfi. it be best to get the whole motor. yes lower compression is good on turbo'd cars, but the stock dohc will be fine since you wont be boosting much since its stock, so lower compression isnt needed. the instrument cluster pretty much is a means of running the car, so you need that.
the reason its better to get the whole motor is because of all the extras you will probably forget. and with the tbi you need the harness so why not pull the engine with it? with the other sohc, its fine to just do the head swap but with tbi more is needed so i just think its easier to get the motor.Ian---The Fat Ass
1995 SL2-High compression engine FOR SALE
2010 Chevy Cobalt SS- tuned with plenty of goodness
2002 SC2-New daily
2017 Kawasaki Ninja 650 KRT- got a stupid deal
2003 Ford Taurus SES- free daily beater
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wella local junkyard told me a complete top end w intake and exhaust and efi unit for 75 and a ecm for 20 so cant i just do it that way and get the timing cover and such w it i think it would include the engine harness and i could prolly fanagle the guages ata the same time. side question if i got the different guages my speedo would be off cuz im using the same trans w the 130mph guages instead of the 110 right??
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Originally posted by constantprojectif i got the different guages my speedo would be off cuz im using the same trans w the 130mph guages instead of the 110 right??
I scored my DOHC cluster off ebay for like $13... just get it
Originally posted by saturnspeed_12the instrument cluster pretty much is a means of running the car, so you need that.
I'm willing to bet... no scratch that... I HAVE run my car without gauges in it... it ran fine... of course, I have no fucking clue what my RPMs, speed and anything else was... but it RAN without them[img width=600 height=150]http://www.sixthsphere.com/storage2/images/wejag665buljx09mu77e.jpg[/img]<br />99SL2 w/97SC2M Engine/Trans Swap, CAI, 2.25 Custom Exhaust
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josh loves the cock
I have a WAGON!
And I don't think there's a difference in the gearing between the SC and SL...
see this post in our tech area:
Gear Ratios for 91-02 S-Series
<---------- see my car by clickng this link[img width=600 height=150]http://www.sixthsphere.com/storage2/images/wejag665buljx09mu77e.jpg[/img]<br />99SL2 w/97SC2M Engine/Trans Swap, CAI, 2.25 Custom Exhaust
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Originally posted by constantprojecti like your rims wher and how much were they. those are the ones i wanted for a while nowand i havnt found them any where cheap, also what size tires do you have?
they are 17" Konig DTD Glides, a very rare and no longer produced wheel
from what I was told... this is like 1 of 8 black sets from the factory...
I bought them off another member of this site who lives nearby
they were, when he purchased them, around $1800[img width=600 height=150]http://www.sixthsphere.com/storage2/images/wejag665buljx09mu77e.jpg[/img]<br />99SL2 w/97SC2M Engine/Trans Swap, CAI, 2.25 Custom Exhaust
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Originally posted by therealm0rh0ushey if you left the sohc cluster there would be no problem, right?
Dunno... never tried it, but like I said, I ran the car with NO gauges at all for a while...
I would imagine it would be "off" in some ways if you did use the SOHC cluster, but again... not 100% sure because I never tried it... and I don't still have my old Cluster to try it either
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