What timing with Whipple 2.3

[HPLouis]

I'm going from the Stieg ported eaton at 12.8lbs of boost to a 2.3 Whipple with the stock pulley (3.5, I think). I'm not sure of the boost level it'll be at but I'm wondering what is everyone running for spark? Are you running more or less than the Eatons? I was thinking of starting at 16 degrees and working up from there.

Thanks

 

[PC03GT]

I'm going from the Stieg ported eaton at 12.8lbs of boost to a 2.3 Whipple with the stock pulley (3.5, I think). I'm not sure of the boost level it'll be at but I'm wondering what is everyone running for spark? Are you running more or less than the Eatons? I was thinking of starting at 16 degrees and working up from there.

Thanks

I was told 18 degrees is the sweet spot

 

[HPLouis]

I was told 18 degrees is the sweet spot

Thanks. I'll start about 14 and work my way up to 18 or so

 

[MG0h3]

True answer is when it stops making more power.

What fuel?


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[HPLouis]

93 octane.

 

[MG0h3]

Kid I bought my car from had everything done at AED.

2.9 Whipple 15 psi 91 octane.

17* but he backed it to 15 around peak torque then ramped back to 17

If you see 15psi I think 18 should be fine.


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[01yellercobra]

Figure out what boost level you'll be at.

I think it was Lasota that came up with the 17/17 rule. 17 degrees of timing at 17psi on pump gas. If you raise one lower the other. It's a starting point at least.

 

[HPLouis]

Figure out what boost level you'll be at.

I think it was Lasota that came up with the 17/17 rule. 17 degrees of timing at 17psi on pump gas. If you raise one lower the other. It's a starting point at least.

Yes, I remember that. It was in his book.
It was 18 degrees at 17lbs of boost and 93 octane.

I'm starting with the stock pulley and from what I read, it should be 13lbs of boost......pretty much where I am now with the Eaton.

Thanks

 

[01yellercobra]

Why not start with a 3.0 pulley and just pull timing?

 

[HPLouis]

Why not start with a 3.0 pulley and just pull timing?

Let me call Whipple on Monday. Maybe they'll let me change the pulley. My invoice shows 3.5 pulley so since it's a separate line item, they might let me swap it out since they build the superchargers per order.

 

[01yellercobra]

I think my buddy ran a 3.0 and it got him 17 or 18psi. It was a fun ride.

 

[PC03GT]

I have a 3.0 and stock lower @18 psi

 

[HPLouis]

I have a 3.0 and stock lower @18 psi

I think my buddy ran a 3.0 and it got him 17 or 18psi. It was a fun ride.

Thanks guys

 

[MG0h3]

I’d get a grip tech or find an RR if you can.
It’ll save you a lot of grief and you won’t need a super tight belt.

I run a 2.9RR upper/stock lower on my 2.9 Whipple. Snub idler but otherwise stock tension wise. Stock tensioner and no Whipple tensioner in there. No issues for years.

For whatever reason, seems Whipple’s only come with a 3.5. Not sure if you can change. Maybe that’s the default.


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[HPLouis]

You're right. They won't change it from a 3.5. It's ok. I'm now on the search for a polished pulley to match the polished blower.

 

[01yellercobra]

I wasn't able to find a polished pulley. I ended up getting one used and polished it myself.

 

[HPLouis]

I wasn't able to find a polished pulley. I ended up getting one used and polished it myself.

Damn, that might be a better idea though.

 

[01yellercobra]

Damn, that might be a better idea though.

The only ones I knew of that were polished were the Reichard Racing pullies. If you do find a polished pulley out there let us know. I might grab a spare.