1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

How much HP?

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Old Aug 27, 2012 | 09:56 AM
  #26  
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From: https://www2.mazda.com/en/100th/
Originally Posted by PK_12A
With your listed mods 140rwhp sounds about right, I have a 12a large streetport on a RB Holley, manifold, and header, on a custom 2.5" exhaust that was dynoed at 141rwhp. so that said, 140 is in the ballpark.
i'd be happy with that.

Originally Posted by WankelSP
Thanks for helping me understand all this and to be realistic. Dont wana go fi until later on. How about those camden superchargers?
my friend did a street port 6 port FC engine that dynoed 165, the camden car dynoed 158... its a sizing problem, by the time the engine can use the air flow the blower the blower can't deliver.

turbo
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Old Aug 27, 2012 | 12:19 PM
  #27  
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turbo

if you're looking to be different and have too much money then a supercharger may give more than what you have but not the best bang for your buck. in the past the camdens would eat themselves up if you pushed them too hard, not sure if they upgraded them to make them more durable.
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Old Aug 27, 2012 | 04:07 PM
  #28  
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Originally Posted by j9fd3s
i'd be happy with that.
Oh I'm very pleased, perfect in something this light.
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Old Aug 27, 2012 | 04:53 PM
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From: https://www2.mazda.com/en/100th/
Originally Posted by PK_12A
Oh I'm very pleased, perfect in something this light.
yes, it is!
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Old Aug 28, 2012 | 04:09 PM
  #30  
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Definitely get it on a Dyno and find out!

With similar exhaust and intake (RB "Street Port" Long Primary exhaust and a Sterling), my tired old 12a did 104hp at the rear wheels. It had borderline compression after 200,000km when it pulled those numbers on a Dynapak Chassis Dyno. So the rebuild and port job is what adds to that, and I agree with the folks here that you're probably in the 140rwhp range.
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Old Aug 28, 2012 | 04:44 PM
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From: https://www2.mazda.com/en/100th/
Originally Posted by vipernicus42
Definitely get it on a Dyno and find out!

With similar exhaust and intake (RB "Street Port" Long Primary exhaust and a Sterling), my tired old 12a did 104hp at the rear wheels. It had borderline compression after 200,000km when it pulled those numbers on a Dynapak Chassis Dyno. So the rebuild and port job is what adds to that, and I agree with the folks here that you're probably in the 140rwhp range.
the engine condition does make a difference, the pro7 cars used to do 112-116rwhp, and they used the stock exhaust manifold. engines were new rotor housings and seals at least.
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Old Aug 28, 2012 | 07:17 PM
  #32  
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Originally Posted by j9fd3s
the engine condition does make a difference, the pro7 cars used to do 112-116rwhp, and they used the stock exhaust manifold. engines were new rotor housings and seals at least.
Yes, I'd expect to be doing a lot more if I was running a fresh 12a. So his engine, being freshly built and ported, should make a good amount more (that's what I meant by the rebuild and the port job). I'm interested to see what the actual number is, since the consensus seems to be in the 140 range.
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Old Aug 28, 2012 | 08:03 PM
  #33  
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Originally Posted by j9fd3s
i'd be happy with that.



my friend did a street port 6 port FC engine that dynoed 165, the camden car dynoed 158... its a sizing problem, by the time the engine can use the air flow the blower the blower can't deliver.

turbo

Not the same car. It would be a bit more accurite if you put the camden on the street ported car; then got your numbers afterwards. Also, what did the curves look like.



I understand the advantages of the turbo over the supercharger, but in my case... I can use the camden with my carb.

I dunno... Part of me is saying "do it right or do it twice dumbass" and the other part is saying "bolt on and GO/ supercharger=POWER on demand".



How self destructive are these things? Bad reputation? I gotta do some reasearch.




EDIT: of course my bigest like (and dislike) is the drawthrough setup. But I'll stop thread jacking now.

Last edited by Qingdao; Aug 28, 2012 at 08:24 PM.
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