just as soon as i test it out with the fiber - don't want to give out bad informationOversteer wrote:Can you give me the contact info you have?
custom intake for 3.4dohc turbo
Moderators: The Dark Side of Will, Series8217
I'd buy one too, and would be willing to spend nearly $500 for it. Any more than that and I'll shy away becuase I could do it myself for around $100.donk_316 wrote:Do it. I wanna run one.Kohburn wrote:yeah I'm using some fiberglass cloth in mine but the resin itself has a 10,000psi ratingOversteer wrote:Are you just using the resin? No fibre material?
when its all done i may make a ceramic mold of it and cast aluminum copies
88GT 3.4 DOHC Turbo
Gooch wrote:Way to go douche. You are like a one-man, fiero-destroying machine.
Aaron...here is a little advice from me to you regarding negotation. Never ever say what you just did.aaron wrote: I'd buy one too, and would be willing to spend nearly $500 for it. Any more than that and I'll shy away becuase I could do it myself for around $100.
Kids these days...Think they know everything.
Resident Import Elitist
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1991 Skyline GTR
(OO\ SKYLINE /OO)
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1991 Skyline GTR
(OO\ SKYLINE /OO)
Why, becuase I offered him a price I'd be willing to pay?donk_316 wrote:aaron...here is a little advice from me to you regarding negotation. Never ever say what you just did.aaron wrote: I'd buy one too, and would be willing to spend nearly $500 for it. Any more than that and I'll shy away becuase I could do it myself for around $100.
Kids these days...Think they know everything.
This wouldn't be for me anyways, it'd be for my friend who is planning a 3.4 Fiero as well.
I don't need to negotiate. If I want the intake, and I trust his skills, and I have the money, I will gladly pay what I think it is worth, which IMO is "up to" $500.donk_316 wrote:Exactly. Negotiation is an art form. But whatever.aaron wrote: Why, becuase I offered him a price I'd be willing to pay?
88GT 3.4 DOHC Turbo
Gooch wrote:Way to go douche. You are like a one-man, fiero-destroying machine.
there are two options really - cast aluminum and cast plasticaaron wrote: I'd buy one too, and would be willing to spend nearly $500 for it. Any more than that and I'll shy away becuase I could do it myself for around $100.
the materials for cast plastic are more expensive
but the materials to make the mold for cast aluminum and the equipment to melt the aluminum are more expensive
so really its all about quantity as to which is more feasable
but either way should be able to keep the price down to be a bit more reasonable.
---- may as well toss in an update
used some spray foam again last night to bond the green foam peices together and to fill in that groove on the top and build up a little more..
I'm going to hold off on pics untill its finished and ready for epoxy covering - after that no more pics till its completed
well I'll see your 1000psi, and raise you 10,000psi for thermal expansion :la:Kohburn wrote:the epoxy i'm currently using maintains a bond strength of 1000psi at 450*F so it shouldn't seperate without a nitrous backfirewhipped wrote:Getting it cast in aluminum might be your best bet. I think you're going to have separation problems with the aluminum and epoxy.
F/A = E*d/L
d = c*T*L
so
F = E*c*T*A
E is young's modulus
c is coefficient of thermal expansion
T is rise in temperature
A is cross sectional area
so which one do you think is going to expand more.. solid aluminum of the 6061-T6 variety, or aluminum filled epoxy with a 10,000psi tensile strength (i'd have to check its spec sheet to see if they privided anything for thermal expansion, but i doubt they did)whipped wrote:well I'll see your 1000psi, and raise you 10,000psi for thermal expansion :la:Kohburn wrote:the epoxy i'm currently using maintains a bond strength of 1000psi at 450*F so it shouldn't seperate without a nitrous backfirewhipped wrote:Getting it cast in aluminum might be your best bet. I think you're going to have separation problems with the aluminum and epoxy.
F/A = E*d/L
d = c*T*L
so
F = E*c*T*A
E is young's modulus
c is coefficient of thermal expansion
T is rise in temperature
A is cross sectional area
and do you think that the expansion will exceed the epoxies elasticity? I don't - granted some epoxies are very brittle, most I work with are not
I also higly doubt the intake will ever even see 200* let alone 500* that the epoxy is good to
The aluminum, easily. Plan on cycling the intake from 30 degrees to engine overheating (250+) temps.Kohburn wrote: so which one do you think is going to expand more.. solid aluminum of the 6061-T6 variety, or aluminum filled epoxy with a 10,000psi tensile strength (i'd have to check its spec sheet to see if they privided anything for thermal expansion, but i doubt they did)
and do you think that the expansion will exceed the epoxies elasticity? I don't - granted some epoxies are very brittle, most I work with are not
I also higly doubt the intake will ever even see 200* let alone 500* that the epoxy is good to
the intake never gets that hot - it has ambient air flowing through it non stop cooling itwhipped wrote: The aluminum, easily. Plan on cycling the intake from 30 degrees to engine overheating (250+) temps.
granted under a lot of boost it'll see higher temps but its still doubtful it'll ever see temps over 200
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Aluminum or plastic I could honestly care less which. And remember also that you could have quite a few of the W-body 3.4 people interested as well, even though it is a short runner intake. I say go for it.Kohburn wrote:there are two options really - cast aluminum and cast plasticaaron wrote: I'd buy one too, and would be willing to spend nearly $500 for it. Any more than that and I'll shy away becuase I could do it myself for around $100.
the materials for cast plastic are more expensive
but the materials to make the mold for cast aluminum and the equipment to melt the aluminum are more expensive
so really its all about quantity as to which is more feasable
but either way should be able to keep the price down to be a bit more reasonable.
88GT 3.4 DOHC Turbo
Gooch wrote:Way to go douche. You are like a one-man, fiero-destroying machine.