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#1
20-03-2006, 19:33
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inspired!
right i have finished spitting my dummy out and im on a mission to finish silvia off before my big day (12 august 2006). I have designed me a manifold and im off to a stainless steel pipe place in worcester to get the bits this weekend or next weekend. Apparently they have lots of bends and shapes so im hopefull. It is a bottom mount as my theory is less piping to go round equals less lag? is this right or wrong? Have got hold of a brilliant tool that files down welds and ports out stuff a treat. Doing my standard manifold at the moment and it really does take off the crap. Will this make much difference on a standard manifold ?????
In contact with turbo technics as im thinking of a variable vane turbo in a t34 format. They havent finished this design yet but might want to test one and i said i would be happy to ablige! This is not set in stone yet. If no good do i go t3 or t34??? answers on a postcard  Could do with someone errrr cough cough 30psi to fit me a piper cam and vernier. i will obviously pay you matey and could try to come to you if thats easier. I will post my piccy up of my manifold design if anyone is interested? ps any help on my silvia is always appreciated!!!
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#3
20-03-2006, 22:51
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#4
21-03-2006, 09:15
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Fanimold
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Not at the mo mate but just cos i am still stupidly busy withthe motor ready for next race on the 9th of april, good luck with the idea . if you need any help with the design let me know.( no offence) Top mount or bottom mount there is no difference that i have noticed in lag but one deffo advantage will be getting a front pipe sorted for it, my first front pipe looked like a fecking submarine periscope. lol.
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 212bhp at the wheels on standard internals. 
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#6
21-03-2006, 13:45
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I need to be certain as to what you require. I guess we are fitting the vernier pulley. But to be honest this isnt worthwhile unless you have a piper cam. So would you change the cam as well?
I would need to check what tool I have to get to the back of the cam as there isn't much space behind the head. Anyway I would have to remove the cam which would require the removal of the bottom pulley and covers to change the belt. This would need the intercooler/rad to be removed as its likely to be in the way. Its not on my setup but may be on yours. I would need to reinstall the rockers shafts and reset the clearances when cold and then when hot as well ideally. Timing the engine up can take a while, at best an hour. Its a bit fiddly to setup and its hard to turn the engine over accurately by hand. I think it took 2 hours to do Adams engine but that was with turning the bottom pulley with my hands and spark plugs still in. At all you're looking at 4 hours really.
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#7
21-03-2006, 16:57
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yes i will be fitting a piper cam aswell. As you say it aint worth the vernier without the cam. As long as your happy to do it i would be very gratefull. It would just be nice to see what she can do on the rollers. I have my big bar and plate intercooler, the only thing i dont have is a tubby yet and i am not sure at all which one to get. Shaun seems well pleased with his t34, but he will probably be pushing a lot more power than me and im wondering whether it would be too laggy on mine.
Ideally i would like a variable vane jobby. They are dammed expensive but if it does the job its worth saving. No lag and big end power! heaven!!! They have only developed a t28 at the moment and are in the process of a bigger development turbo.
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#8
21-03-2006, 17:06
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OK well we'll have to talk nearer to the time after you've bought the necessary bits.
As for a turbo I would like to replace mine with a GT28RS. Although some turbo's judging by their name ie T3,T4 etc you would assume some are larger than others whats more important is the correct a/r ratios. For example a T28 off a skyline has a very low a/r ratio due to the fact it is essentially designed for a 1.3 engine. Have a word with turbo technics and ask them for an opinion on a turbo for your engine where you want to aim for 300bhp.
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#9
21-03-2006, 21:25
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i know the guy well who has the protoype TT t28 variable vane. The rest of the car is driveable but not mapped properly yet. He says that when you boot it in any gear below 3k, that smoke pours off the rear tyres! more like a v8 torque low down than DET. Will let you know more when hes got it running or ive blagged a run in it
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#10
21-03-2006, 21:34
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How are variable vane turbos made?
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Linear Mode
