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ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: kirknd4spd on July 22, 2006, 10:39:05 PM

Title: 8 valve to 16 valve swap
Post by: kirknd4spd on July 22, 2006, 10:39:05 PM: a friend and i are swapping a 16 valve engine into his 90 sidekick. will the 16 valve just bolt in in place of the 8 valve that came in it, or will we need to change over a lot of other things? my 89 had a 16 valve swap when i got it, but i cant find the previous owner to ask about this.
by the way, we dont have a donor vehicle, he ordered the engine online, so we cant just go get parts.
Title: Re: 8 valve to 16 valve swap
Post by: nils on July 23, 2006, 01:58:49 AM: isn't the 16 valve a multipoin injection and the 8 valve throtle body injection?
in that case you need to build the whole injection and fuel management system over.

the block itself should be a perfect match
Title: Re: 8 valve to 16 valve swap
Post by: Uncivilized on July 23, 2006, 08:40:06 AM: To do the swap, you'll need a engine/vehicle harness from a 95 2-dr with 16v, as well as the ECM. The 5-speed tranni should be the same right through all years, but you might have an issue if it's automatic. You would have been better off with a donor vehicle so you can take what you need. Id find a donor in a salvage yard to get parts when needed.
Title: Re: 8 valve to 16 valve swap
Post by: kirknd4spd on July 23, 2006, 01:24:51 PM: why would we need new harnesses? could we just swap the fuel injection from the 8 valve? he got a new auto tranny with the engine too.
Title: Re: 8 valve to 16 valve swap
Post by: Rhinoman on July 24, 2006, 05:03:24 AM: Quote from: kirknd4spd on July 23, 2006, 01:24:51 PM
why would we need new harnesses? could we just swap the fuel injection from the 8 valve? he got a new auto tranny with the engine too.

I would think that the fuelling would be all wrong. It is possible to swap the 8V stuff on but you would have to make a plate to go between the inlet manifold and the head to blank off the injector recesses.
Title: Re: 8 valve to 16 valve swap
Post by: Yoak on July 24, 2006, 04:37:25 PM: The 8V is TBI, 16V is MPFI....the fuel system is different....

thus you would need the harness to fire the additional injectors and a cpu to do it...

unless you go mega squirt or something like that
Title: Re: 8 valve to 16 valve swap
Post by: da_tub on July 24, 2006, 04:45:22 PM: your eight valve harness is different then the 16,, it'll be like trying to plug a square plug into a round hole.. just aint gonna happen... good luck a happy tinkerin( ;)
Title: Re: 8 valve to 16 valve swap
Post by: Quaddawg on July 24, 2006, 08:07:24 PM: The computer is different, so the harness is different, you will DEFINITELY need a donor vehicle, or at the least, a cooperative junk yard with a 16v to get EVERYTHING from. Computer and wiring harness.. It's a bitch, and usually easier to just find a wrecked 16v. I wanted to do this myself. but the gains weren't worth the price. It ended up being cheaper to sell my 8v Track and buy a 16v Track. I didn't do it. I just kept the 8v.. too much hassle.

Still looking for a decent 16v but the prices are rising fast!! These kicks are good investments when you can find them under a grand, JUMP ON EM!!
Title: Re: 8 valve to 16 valve swap
Post by: kirknd4spd on July 24, 2006, 10:36:02 PM: alright, thanks. were trying to find a donor vehicle, but the last one we found didnt have the harness, so we will keep looking.