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Cal-look/High Performance => Pure racing => Topic started by: Karlos99 on January 09, 2021, 12:15:56 pm



Title: JPM Raptor IDA stacks
Post by: Karlos99 on January 09, 2021, 12:15:56 pm
Morning all

Iím in need of some new Velocity stacks for my IDAís, Iíve come across the JPM set for a little more money than the genuine Weber style. Whoís got them? Who likes them? who doesnít? And most importantly are they worth the money. Engine is a 2110, FK10 cam, ultramag heads with berg 35/40 grooved vents

Many thanks

Karl


Title: Re: JPM Raptor IDA stacks
Post by: henk on January 10, 2021, 13:12:47 pm
I think it would be beter then to get everything from JPM.
So both the stacks and venturi's from JPM.

Henk!!!


Title: Re: JPM Raptor IDA stacks
Post by: PPRMicke on January 10, 2021, 18:53:27 pm
Morning all

Iím in need of some new Velocity stacks for my IDAís, Iíve come across the JPM set for a little more money than the genuine Weber style. Whoís got them? Who likes them? who doesnít? And most importantly are they worth the money. Engine is a 2110, FK10 cam, ultramag heads with berg 35/40 grooved vents

Many thanks

Karl
with JPM stacks and venturi (jpm) they flow much better than GB Venturi (that's with them are 70s think and vilever in the 20s)
For info in IDA 51.5 with jpm venturi (44mm) and stacks, the limit is 285 hp
/// Micke


Title: JPM Raptor IDA stacks
Post by: H67bug on January 28, 2021, 20:33:51 pm
I have them with JPM venturis.

Canít tell you what performance difference they made though...

I had a lot of fuel stand off (fuel was all over the place above 2k rpm) and the rolling road team didnít want to run the car so I fitted Weber ones instead to dial the car in.

Have subsequently fitted them back on but not tested them yet.


I did test the Wasp exhaust back to back and that made a huge difference V A1 with +18bhp. I wonder if this will help the fuel spray issue.


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Title: Re: JPM Raptor IDA stacks
Post by: PPRMicke on February 09, 2021, 10:28:34 am
I have them with JPM venturis.

Canít tell you what performance difference they made though...

I had a lot of fuel stand off (fuel was all over the place above 2k rpm) and the rolling road team didnít want to run the car so I fitted Weber ones instead to dial the car in.

Have subsequently fitted them back on but not tested them yet.


I did test the Wasp exhaust back to back and that made a huge difference V A1 with +18bhp. I wonder if this will help the fuel spray issue.


Sent from my iPhone using Tapatalk
When calculating the length of your intake pulse (pulse 2 or 3) it was in stacks or above or at the venturi
Or did you just put them there
/// M


Title: Re: JPM Raptor IDA stacks
Post by: H67bug on February 09, 2021, 11:02:43 am
Hi

I used what JPM suggested from head to Venturi


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