SOHC or DOHC

JC · rice boy Joined: 08 Nov 2001 Posts: 14

I am thinking of putting in a new engine in my gem. How difficult is it to fit a DOHC engine?

Pete · backyard mechanic Joined: 05 Oct 2001 Posts: 502

are you talking isuzu? coz actually finding these is the hard bit. if your talking sr20 or fj, then its not bolt in, but is not heaps difficult and is efi so heaps better and definately, in my opinion, worth the $

Andrew65 · tinkerer Joined: 23 Feb 2002 Posts: 303

What about a Hyundi twin cam???

CJ · rice boy Joined: 09 Oct 2001 Posts: 20

the ISUZU DOHC conversion is very easy once you have found the motor and gear box, you need the twincam box because the starter is on the left (opposite to SOHC).
it is a straght swap useing standard SOHC mounts and get custom exstactors made, other wise youll need to use a deisel crossmember then you can use the standard exhaust manifold, but why would you want to ???
EFI, you wont need a surge tank in a sedan unless you intend doing doughnuts on very low fuel i.e about to run out.
any more questions email me

gemini_club@hotmail.com

Gene FJ20DET · Posted: Sun May 26, 2002 10:23 pm Post subject: Re: SOHC or DOHC

arnt they fron wheel drive tho??
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Adam · Site Admin Joined: 04 Oct 2001 Posts: 682

I strongly disagree with your statement regarding the need for a surge tank, I can get my fuel inlet to suck air no problems with around one third of a tank, maybe more...

martin · backyard mechanic Joined: 04 Oct 2001 Posts: 900

lol

"doing donuts on low fuel"

they are revving motors and not a whole lot of fun when you are actually trying to break traction... but then, once traction is no longer a concern they will rev out very nicely to 7k

spose my clutch is to blame for lack of traction breaking