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#3
15-01-2013, 10:19
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very well actually. To be honest, with a forced induction, low tech 8v headed engine, a lot of the theory is cobblers in practice imho. That manifold with decent mapping (that car also ran emerald ecu mapped by the legendary Dave Walker
 ) ran really well  it was a laggy setup, but then the Pulsar T3 is known to be laggy when fitted to DETs or SRs as well. but being a tart i went tubular which was a lot more hassle  but did work well in the end. For up to 250hp i think the runners were too big on mine, should have been 1/4" smaller diameter for improved spool
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 Racing is life. Everything else, before and after, is just waiting. - Steve McQueen 
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#5
15-01-2013, 16:58
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yep, i hear ya, but then then gas has to go through 90deg from valve to exh port before it gets to the exh manifold, so its not like a less than perfect theory manifold is the only design issue.
anyway, perfect world tubulars the way to go imho, but its a lot of work as i found out and has a lot of potential for the F*ck Up Fairy to visit, whereas the K.I.S.S. approach of using a stock manifold or fabricating a log manifold is simpler and does work albeit potentially not as well as the tubular if done correctly http://www.boostedk20.com/forums/sho...bular-Manifold hopefully the pics are of use to the OP, even if theyve given you a chuckle nedge...
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Racing is life. Everything else, before and after, is just waiting. - Steve McQueen Last edited by CNHSS1; 15-01-2013 at 17:04.
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#6
15-01-2013, 19:49
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hey, if it works it works! as you say, there's alot of theory out that but few have the balls and/or facilities to test it properly. besides, i can't really comment - my knowledge is firmly rooted in n/a engines, i know sod all about proper turbo tuning :P
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1989 Mk2 Red Auto 1988 Mk2 Blue Manual 1988 Mk2 Red Auto (Ex-Silviagod) 1988 Mk2 Blue Manual (Donor) Last edited by nedge2k; 15-01-2013 at 19:54.
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#7
16-01-2013, 02:12
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Thank you for your pics and vast knowledge on this overseen engine.
Looks like it was a perfect engine in that beast why did you change your mind on running it? I like the oil piston squirters I was going to ask if you did that mod as its upposed to help with cooling slugs and overall reliability especially on the small ends. I really like the fact it was designed as the PLAZMA or something for it ability to be lightweight and powerful. Of course the head could have been better but for the hp and torque I am chasing its cheaper and lighter than most engines available cheaply. The 8v head is 9-10 kg lighter than the twin cam head and leavers heaps of room in the engine bay. If I go for the stock ex manifold could it achieve big torque and decent hp with 200cc extra (1997cc) or should I go for extra capacity tube ex manifold like that square looking contraption  Any idea what that tube square manifold made ? 
Last edited by datsober; 16-01-2013 at 03:43.
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