turbo cams?
1990 1.6. i am going to install a begi kit and was wondering what performance cams i could use with a turbo setup. thanks.
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integral cams, hks, toda make cams for 1.6's, what's your goal for the power/use, and what engine management you're gonna be using?
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Wont net you much benefit.
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Originally Posted by Saml01
(Post 208152)
Wont net you much benefit.
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Originally Posted by Saml01
(Post 208152)
Wont net you much benefit.
http://img176.imageshack.us/img176/9917/camsft7.jpg Dyno proof forthcoming... |
Originally Posted by Ben
(Post 208170)
I smell bullshit
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Ya, but Ben bought his cams at Target!!! Cams can make a difference but it has to be integrated into the whole setup, primarily useful for moving the curve up and down in the rpm range.
Mark |
Has anybody tried doing some work with adjustable pulleys on stock cams? Or maybe just an exhaust cam?
I would imagine there are some gains specially in the low-end by reducing overlap and compensating that with higher-lift. |
Yes and it all works the same as any other motor, it is just most of us are to cheap and DIY oriented to splerge for dialing in cams like that.
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Why do you need to splurge or give up DIY orientation to dial in cams? Lots of people in the Suzuki and Honda communities do it.
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Originally Posted by The_Pipefather
(Post 208199)
Why do you need to splurge or give up DIY orientation to dial in cams? Lots of people in the Suzuki and Honda communities do it.
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my build will be for a mild setup. but im not sure what lift and duration works well with forced induction. i will also be using adjustable cam gears, and dyno to tune it.
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Eliminator on .net got good results from his cams. Ultimatly i don't see this as a mod for people trying to go mild becouse well a stock or even a ported stock head and stock cams do a pretty nice job, of making power in the low to mid 300 hp range. If you aren't gonna go up there i would spend the money on a better WI system clutch, suspension etc.
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Originally Posted by blueovalmiata
(Post 208366)
my build will be for a mild setup. but im not sure what lift and duration works well with forced induction. i will also be using adjustable cam gears, and dyno to tune it.
I'll be upset if I don't see 15-20 hp out of my cams and gears compared to stock. |
Originally Posted by Ben
(Post 208368)
Makes sense that power would go up if you stop blowing boost straight through the head.
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Maybe for an NA engine. Atleast in theory, boost can compensate for those 20 degrees of overlap you have on a stock 1.6. Since we have DOHC we should be taking advantage of the ability to vary intake and exhaust independently. I dont know why many people haven't done that yet since cost-wise pulleys dont cost that much. A good place to start would be retarding the exhaust cam IMO. Of course the goal would be to pick up hp in the lower rpm range.
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Do B6T cams from the 323 gtx work?
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If you find them, maybe. The B6T is rarer than hens teeth as far as I can tell.
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I've got a set. Someone want to buy them.
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B6T's are easy to find in the junkyard, just look for a Capri XR2. These cams should favor smaller turbine housings and/or wheels, and restrictive exhausts. Using an automatic Miata exhaust cam is an old GTX "upgrade" for more midrange torque. I think that'd work okay with a free flowing exhaust but I'd rather play with the B6T exhaust cam timing and just add a little bit of overlap.
Kia Sephia's and some MX-3's have a B6DE that's similar to a BP (CAS/dist is on the exhaust cam, injector bosses in the head). It might be possible to use those cams for a cam swap? Anyone measured them? Does anyone have experience with 250* Mazdaspeed cams? Used them in a turbo engine? Overlap let's the exhaust blow into the intake when backpressure in the exhaust manifold is greater than intake/boost pressure... |
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