Octane boost thoughts

Octane boost thoughts

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Discussion

DangerousDerek

Original Poster:

8,655 posts

221 months

Wednesday 4th May 2016
quotequote all
I would be interested on peoples thoughts as to why and maybe where I can improve my tune.

I was racing at York last weekend. The TVR was quite consistent despite the weather and was running terminal speeds of 114.5 mph.
On the Monday a friend offered me half a bottle of Royal Purple octane boost so I dumped it in my tank which had about 15 litres of Vpower in.
First run I ran 114.8, then 116.2

My engine is a 5.0 with a solid cam and fairly high CR of 11:1
Do we think its crying out for higher octane?
Maybe I could add a couple degrees advance but its set at 34 degrees already.

What do we think?

DangerousDerek

Original Poster:

8,655 posts

221 months

Wednesday 4th May 2016
quotequote all
No worries I don't intend to stretch timing etc.
I did have to add 3 points to the top of the fuel map on Sunday to get the AFR down as it was a tad lean on WOT at the top end.

What I would like to do is get it on Surrey rolling road soon if I can. I think it's now producing good numbers.

What's it worth do we think? I got a lot of blood sweat and tears in this now.

DangerousDerek

Original Poster:

8,655 posts

221 months

Wednesday 4th May 2016
quotequote all
rev-erend said:
Why not buy some 118 octane av gas. They sell it at the pod.
I have a drum of VP racing fuel, I think I will try a mix next meeting.