lowlancer Posted August 8, 2007 Share Posted August 8, 2007 Can I chuck an early model round SOHC port head on a later model SOHC block, like from a E39 shape Galant or later. Just thinking about water galleries etc The engines are far more common and fucking cheap. I already have a head I'm working, so the exhaust ports are irrelevant due to the head I have being the right type. I just don't know whether it'll fit the later block. Also, wil the later block cause issues with gearbox fitment? Quote Link to comment Share on other sites More sharing options...
fuel Posted August 8, 2007 Share Posted August 8, 2007 Blocks are the same, infact so are the heads on that shape Galant. Only difference being higher compression pistons and multi point fuel injection (I can't remember if they have a blanking plate to block off fuel pump hole or the heads are just not cast with that hole). Oh and the cam will be different profile. So grab the later model SOHC 8V engine, use your head on that block, with the later model camshaft. Would be a good base to chuck twin carbs/sideys on. The 4G63 remained relatively unchanged from its introduction in 1980 up until 1992ish when they changed to the newer 7 bolt block. Quote Link to comment Share on other sites More sharing options...
insanebrain Posted August 8, 2007 Share Posted August 8, 2007 becareful that there is narrow and wide blocks when it comes to gearbox fitting. Most of the Rwd stuff was one and the fwd the other (but not completely exclusive). The guys on http://www.austarion.com would know the exact details Quote Link to comment Share on other sites More sharing options...
fuel Posted August 9, 2007 Share Posted August 9, 2007 Wideblock is RWD Turbo only (ie my Eterna, Starions etc), and some of the 4G54's. We are talking about the 4G63 SOHC N/A carb in his Sigma Wagon, and a 4G63 SOHC injected out of a E33A shape Galant - both narrowblock. Quote Link to comment Share on other sites More sharing options...
insanebrain Posted August 9, 2007 Share Posted August 9, 2007 right thanks for that - I knew there was a difference but didn't realise it wasn't relevant in this situation. Quote Link to comment Share on other sites More sharing options...
lowlancer Posted August 9, 2007 Author Share Posted August 9, 2007 Lubs you phil Quote Link to comment Share on other sites More sharing options...
Ogre Posted August 10, 2007 Share Posted August 10, 2007 they put the twincam 4g63 turbo head on the RWD blocks, same sorta deal i guess.Dont think there has to be any mods to water galleries or anything to do that. Will be interesting as those fwd blocks etc are so cheap and easy to find. Quote Link to comment Share on other sites More sharing options...
lowlancer Posted August 14, 2007 Author Share Posted August 14, 2007 Reckon it'll still be ok with the 32/36? Don't wanna go sideys Quote Link to comment Share on other sites More sharing options...
treggo Posted August 14, 2007 Share Posted August 14, 2007 get bike carbs Quote Link to comment Share on other sites More sharing options...
CaMpylobacter Posted August 14, 2007 Share Posted August 14, 2007 get bike carbs yes. would be cheaper than buying twin 45s even, let alone finding a manifold for them. bike carb mani = piece of piss Quote Link to comment Share on other sites More sharing options...
treggo Posted August 14, 2007 Share Posted August 14, 2007 cooler too. Quote Link to comment Share on other sites More sharing options...
Guest sexychevette Posted August 14, 2007 Share Posted August 14, 2007 i found tripple bike carbs wit manifolds and velocity stacks in my shed. they even got mean as mesh over them like oldschool racin cars. Guna put them on my mums legacy. Runs on three most of the time anyway Quote Link to comment Share on other sites More sharing options...
Mike-e Posted August 14, 2007 Share Posted August 14, 2007 will make for a rofls inlet mani Quote Link to comment Share on other sites More sharing options...
lowlancer Posted August 14, 2007 Author Share Posted August 14, 2007 Nah not going bike carbs. Needs to stay okay on gas, be easy to tune, and not need any fucking about. Motor isn't gonna be intense enough to warrant doing that, IMO anyway. Maybe down the track when I get a different car, wagon will just be means to end stz Also, phil, are the DOHC heads square port? If I wanted to chuck one on, what would I do for inlet manifold? Could I use round port inlet and just fuck round with die grinder to get em close enough? Would look badarse as and could use VR4 cams or something Quote Link to comment Share on other sites More sharing options...
fuel Posted August 14, 2007 Share Posted August 14, 2007 There's no way you'll get a SOHC inlet manifold to fit on a DOHC 4G63. The VR-4 4G63 has large ports while the Evo 4G63 has smaller ports, but both are squarish. You can cut and shut a manifold to suit RWD. Quote Link to comment Share on other sites More sharing options...
isnowi Posted August 14, 2007 Share Posted August 14, 2007 If you decided to go dohc, i could sell you a std single runner intake with new throttle body flange welded on the right end, needs a different fuel rail too though.. I'm going quad throttles so wont need the manifold anymore soon. Quote Link to comment Share on other sites More sharing options...
Ogre Posted August 14, 2007 Share Posted August 14, 2007 could run twin downdrafts or IDAs(or whatever they are) on the twin carb manifold like i used to have.Gotta find one tho, guess that would be a cunt.Get john-o to sell ya his (my old ones on your old engine) lol. What sorta HP can ya get outa a pinto with a 32/36?Would be bout the same for the 4g63 with less work. Just fucked round with timing on mine 2day, running 25degrees with no detonation, got to 30, but started to detonate when the secondaries just started to open then goes away.Guess theres a lean patch just as they open ftl, roll on webber. Quote Link to comment Share on other sites More sharing options...
CaMpylobacter Posted August 14, 2007 Share Posted August 14, 2007 could run twin downdrafts or IDAs(or whatever they are) on the twin carb manifold like i used to have.Gotta find one tho, guess that would be a cunt.Get john-o to sell ya his (my old ones on your old engine) lol.What sorta HP can ya get outa a pinto with a 32/36?Would be bout the same for the 4g63 with less work. Just fucked round with timing on mine 2day, running 25degrees with no detonation, got to 30, but started to detonate when the secondaries just started to open then goes away.Guess theres a lean patch just as they open ftl, roll on webber. prolly got mad inaudible detonation rocking. hello ogre 4g63 #403453090 Quote Link to comment Share on other sites More sharing options...
Ogre Posted August 14, 2007 Share Posted August 14, 2007 /nah, i think its coz it runs so rich Quote Link to comment Share on other sites More sharing options...
lowlancer Posted August 15, 2007 Author Share Posted August 15, 2007 There's no way you'll get a SOHC inlet manifold to fit on a DOHC 4G63. The VR-4 4G63 has large ports while the Evo 4G63 has smaller ports, but both are squarish. You can cut and shut a manifold to suit RWD. Okay Here's what I was thinking today, and it doesn't mean I will do it, just a thought. Twin cam head on rwd block with inlet manifold made up to suit twin 45s or 4xmotorbike carbs Issues -Inlet mani -Water piping -Producing spark with twin cam head and no ecu -Fuelling Figure the mani would be easy enough, get evo 4-8 one and cut up and get flange made to suit carbs Any easy way round water piping, and producing spark with no CAS. Could I use a dizzy somehow? Or use the cas on the head and get a cheap ignition computer?...... Spose I'd have to run a low pressure electric fuel pump over mechanical due to lack of allowance on DOHC head? Damn me and my imagination. Just keen as on something different that sounds badass and goes well. Anyone got link to motorbike carb thread? Quote Link to comment Share on other sites More sharing options...
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