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Magnuson Heartbeat hood clearance?

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Old 07-30-2014, 02:00 PM
  #21  
CI GS
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Originally Posted by 08C6
I'm running the 81mm pulley... 565RWHP - 535RWTQ ... I seen 10 PSI I was hitting...I have LG Motorsports header package... Borla Type S exhaust ... Kenne Bell Boost a pump...Car pulls hard - car is solid !!!
Are you running straight pump gas at that level?
I haven't heard one complaint from anyone that's running this blower as yet. That says a lot too.
Sorry about the thread highjack, OP.
Old 07-30-2014, 02:24 PM
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Straight pump gas 91 - Ultra 94 most of the time !!!
Old 07-30-2014, 05:52 PM
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erupted
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Hey guys just wanted to follow up. Evidently, MTI Racing got in contact with Magnuson about the pulley size question.

This morning I got emails from both Kevin at MTI Racing and David Gonzalez from Magnuson stating the unit will be built/shipped with a smaller pulley. David from Magnuson said the 90mm pulley would a good choice for the 1 7/8 headers w catted x pipe.
Old 07-30-2014, 07:07 PM
  #24  
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Originally Posted by erupted
Hey guys just wanted to follow up. Evidently, MTI Racing got in contact with Magnuson about the pulley size question.

This morning I got emails from both Kevin at MTI Racing and David Gonzalez from Magnuson stating the unit will be built/shipped with a smaller pulley. David from Magnuson said the 90mm pulley would a good choice for the 1 7/8 headers w catted x pipe.
Excellent. Magnuson used to deliver their systems with just a base pulley. If you wanted a smaller one, you had to buy it. Then, you owned a big pulley that was good for nothing more than a paper weight. Glad they're doing the right thing nowadays
Old 07-30-2014, 09:07 PM
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Originally Posted by erupted
Hey guys just wanted to follow up. Evidently, MTI Racing got in contact with Magnuson about the pulley size question.

This morning I got emails from both Kevin at MTI Racing and David Gonzalez from Magnuson stating the unit will be built/shipped with a smaller pulley. David from Magnuson said the 90mm pulley would a good choice for the 1 7/8 headers w catted x pipe.
I think the 90mm pulley is a great choice for a pump gas car with headers. My car made 550 rwhp and 540 rwtq with that exact setup on 91 octane. At 7-8 psi max, I don't think a centri car would make much more, and even then it would all be at 5000+ rpm.

I would highly recommend you get a shorter belt, though, unless Magnuson is going to supply that. I thought I was fine with the supplied belt and 90mm pulley, but then I found my tensioner pulley eating into my intercooler hoses. The original belt is just too long with the smaller pulley. A K060975 fits perfectly with that pulley. The kit usually comes with a K060980.
Old 07-30-2014, 09:51 PM
  #26  
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He thanks alot! I forwarded the info to David at Magnuson. All your info has really been invaluable.


Originally Posted by Streetk14
I think the 90mm pulley is a great choice for a pump gas car with headers. My car made 550 rwhp and 540 rwtq with that exact setup on 91 octane. At 7-8 psi max, I don't think a centri car would make much more, and even then it would all be at 5000+ rpm.

I would highly recommend you get a shorter belt, though, unless Magnuson is going to supply that. I thought I was fine with the supplied belt and 90mm pulley, but then I found my tensioner pulley eating into my intercooler hoses. The original belt is just too long with the smaller pulley. A K060975 fits perfectly with that pulley. The kit usually comes with a K060980.
Old 07-30-2014, 11:36 PM
  #27  
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No problem. Just don't let them give you the old "the belt normally included will be just fine" line.



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