This is topic how much boost? in forum Tech Talk at Northern California Ford Owners  .


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Posted by ranger guy (Member # 4899) on :
 
i have an 89 saleen. i have a paxton supercaharger for it. the motor is stock besides headers,24 pound injecters and maf,throttle body and a e303 cam. i was wonderin how much boost i could run on my motor? the motor has 89,000 easy miles on it. and how much power will i be makin and what kind of 1/4 times could i turn? thanks guys!!!
 

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Posted by Mr JoCo (Member # 1549) on :
 
boost doesn't break shit, horsepower breaks shit. How much boost can the lil paxton make? 8lbs?

blocks crack at exactly 501 horsepower , so you can boost up to as many pounds as it takes to make it there, and you'll still be okay - for a lil while.
 

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Posted by Mr JoCo (Member # 1549) on :
 
i'd guess around 20 lbs of boost on that stock motor... if that's even possible??
 

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Posted by ranger guy (Member # 4899) on :
 
the blower is built the lowest i can run is 6 pounds. i can run 12-15 easy without over workin it. but another thing is im not gonna be running a after cooler either.
 

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Posted by Blue97GT (Member # 4241) on :
 
Id sell the paxton and get a vortech.
 

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Posted by Jeff S (Member # 371) on :
 
On the stock motor with 91 octane you are limited to probably 12psi MAX. If you were to try and push 20psi it would not only detonate serverly but you would probably crack the heads.
 

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Posted by gt40 (Member # 3587) on :
 
you will need an inter cooler anything over 12 lbs. of boost.
 

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Posted by 306Coupe (Member # 4988) on :
 
I heard the same. With stock internals 12lbs should be max, unless you want to buy a new engine soon.
 

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Posted by ranger guy (Member # 4899) on :
 
i have an f cam layin around would it be a good choice for this set up? and would i have piston valve clearence problems?

[ December 30, 2004, 09:44 AM: Message edited by: ranger guy ]
 

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Posted by FasterDamnit (Member # 442) on :
 
Tell us which blower. Paxton makes several for the mustang.
 

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Posted by 03 GT Guy (Member # 2544) on :
 

quote:

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Originally posted by Jeff S:
On the stock motor with 91 octane you are limited to probably 12psi MAX. If you were to try and push 20psi it would not only detonate serverly but you would probably crack the heads.

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quote:

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Originally posted by gt40:
you will need an inter cooler anything over 12 lbs. of boost.

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Would the Alky injection system from Snow performance be about the result as a inter or after cooler?
 

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Posted by white1990stang (Member # 2307) on :
 
yes run the f-cam. i love it in my blower car. i dont know if you can run 1.7's with it or not. im runnin 1.6's. anyone know if it would be ok to run 1.7? cause if i could i would switch mine out
 

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Posted by cvr 5.0 (Member # 2962) on :
 
you can only push the 24 pound injecters so much "isn't 6 pound pushing it?"
 

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Posted by 89saleen (Member # 3083) on :
 
If your Paxton is a SN series, you would be lucky to see 5#s outa that- but I figure your combo with 9#s would be fine. Just make sure you are not running lean and your gaskets should hold.
 

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Posted by 89saleen (Member # 3083) on :
 

quote:

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Originally posted by Blue97GT:
Id sell the paxton and get a vortech.

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Posted by ranger guy (Member # 4899) on :
 
the blower is a sn92 but it has 0 miles on the rebuild, and it has a different impeller and pulley equling out to 12 pounds. and if i put that f cam in will i have piston/valve clearence issues? im running the stock heads?

[ January 03, 2005, 09:22 AM: Message edited by: ranger guy ]
 

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Posted by 89saleen (Member # 3083) on :
 
Ive had three SN Paxtons & yes they are good reliable superchargers- last long time, but 12#s no matter how you pully it is pretty optimistic IMO.. especially once they get hot, but I could be wrong. On the F-cam I am not sure about clearance issues, but you wouldnt see much power gain untill you upgraded the heads. Oh, and they make a cooler kit for the SN series that fits into the dipstick hole with a little radiator to cool the ATF that seemed to help for me. My SN would get hot and cause me to ping and run like dukie.

[ January 03, 2005, 09:47 PM: Message edited by: 89saleen ]
 

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Posted by ranger guy (Member # 4899) on :
 
cool thanks for the info, do you know were i could get my hands on one of those coolers?
 

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Posted by 89saleen (Member # 3083) on :
 
They discontinued the SN series in 2000, and Paxton dosent offer any type of support/parts for them whatsoever so I doubt they would still be selling that cooler. Now, Paxton referrs you to a company called Paradise Wheels in San Marcos, Ca. that is the ONLY place that will rebuild or service those units now. They proably have something like that or would know how to get it. Im assuming that is the place that rebuilt your SN-92 unless you found a turbo shop or someplace that would do it.
One more thing- all three of the units Ive had leaked ATF into the discharge tube- even after a rebuild! Check periodicly your plastic discharge tube for wetness from ATF blowby. They all do it. Just a matter of time.
 

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Posted by BlowN67 (Member # 4229) on :
 

quote:

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Originally posted by ranger guy:
cool thanks for the info, do you know were i could get my hands on one of those coolers?

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I got this bro an the 8lb pulley lmk
 

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