Header torque?

[Kenzie]

Installing spi header and can't find torque specs

 

[cannondale27]

22Nm or 16 ft lbs is what I could find.

 

[Kenzie]

Thanks very much

 

[Pjw350]

Thanks very much

Do not use the junk gasket that comes with the header- use the stock gasket and it wouldnt hurt to do a few heat cycles and retorque the fasteners before you put it all back together.

 

[Kenzie]

Shiiiiit ya I used the straightline gasket that it came with. May be going back under for a replacement. Are these known to be an issue and not hold up?

 

[cannondale27]

Was a few other posts stating that. I never got one with mine so I reused stock. No issues.

 

[Kenzie]

Mid as well let this one ride out and see what happens

 

[Pjw350]

The straightline gasket lasted 20 miles for me and was leaking. I was getting popping when i was stopping and limped it back to the truck. I also did 3 heat cycles and retorqued it before putting it back together. Almost all of the fasteners were loose. I then bought a new oem gasket( which you probably could reuse your old gasket) and did 3 heat cycles and retorqued the bolts and havent had issues.

 

[dirk660]

Did you guys notice a difference in power when you put the header on

 

[cannondale27]

I did! That header makes peak power at 9050rpm so that means you add weight to clutch and therefore gain speed.

 

[Pjw350]

I noticed alittle and even let my buddy take it for a rip before and after and he said it was quicker. I had to add weights.

 

[dirk660]

Does it have to be a straight line header or would any header make a difference? I'm in canada and the exchange is killer but I could get a mbrp header for not bad a price

 

[dirk660]

I did! That header makes peak power at 9050rpm so that means you add weight to clutch and therefore gain speed.

Do you have any modifications done to your airbox also?

 

[cannondale27]

Does it have to be a straight line header or would any header make a difference? I'm in canada and the exchange is killer but I could get a mbrp header for not bad a price

I never tested MBRP header so don’t know. Is test of Straightline/Ulmer vs EVO here somewhere I did. Straightline won.

 

[cannondale27]

Do you have any modifications done to your airbox also?

Yes all my mods are in signature. The Stingray airbox mod works as well as any boughten ones that I tried.