Vp Msc100 Versus Vp Motorsport 109

[J-Boy]

Hi,

I am looking at 2 kinds of race fuels, namely VP MSC100 and VP Motorsport 109. Anyone used them before with any inputs? I have spoken to The Brock Shop who have done dyno testing on race fuels and they suggested to me that the VP MSC100 burns better, is more oxygenated n churned out more power on the dyno than the 109 although the 109 has a higher octane level. They have also adviced that the MSC100 protects better than the VP109. Any input and advice would be greatly appreciated.

Cheers, Jyo.

[J-Boy]

anyone who has used race fuels before with any advice?

[2rismo]

"Burns Better" and "Protects Better" are not terms that can apply to each and every engine as all engines have different characteristics. I would contact a workshop that has done fuel testing with RB series engines.

[andylaurel]

109 octane fuel will be harder to ignite but reduce knock.

100 octane fuel will be easier to ignite, but may not allow much more than 24 psi (guestimate)

all depends on what your motor/turbo combination is

[Sydneykid]

Hi,

I am looking at 2 kinds of race fuels, namely VP MSC100 and VP Motorsport 109. Anyone used them before with any inputs? I have spoken to The Brock Shop who have done dyno testing on race fuels and they suggested to me that the VP MSC100 burns better, is more oxygenated n churned out more power on the dyno than the 109 although the 109 has a higher octane level. They have also adviced that the MSC100 protects better than the VP109. Any input and advice would be greatly appreciated.

Cheers, Jyo.

VP Motorsport C100 isn't oxygenated and (IMHO) it's MON of 96 is a bit low for good knock control in a high rpm engine.

VP Motorsport 109 is oxygenated and the best of the VP unleaded fuels for drag racing, be aware that it needs good igntion systems. It's MON of 101 is more like what I would want in big power/high rpm RB. Keep in mind that it's SG is low (0.722) so you will need more fuel than the common 0.75 to 0.80 fuels to achieve the same A/F ratios.

cheers

PS; keep in mind that both of the above are nasty on humans, so don't inhale it or spill on yourself.

[2rismo]

MTBE = bad

[J-Boy]

If i were to mix 20L of VP109 with 40L of BP ultimate fer a track session, is that advisable? With that combination, what kind of specifications of an ignition system do i need? Or would 20L of VP103 and 40L of BP ultimate be better? I'm running approx. 21-22psi of boost in a rb26 with 34 N1s. I've got a pretty rich tune at the moment too.

[2rismo]

It's irresponsible of anyone to suggest what your car will handle unless they're reviewing a dyno run. If you're just after some cheap insurance for your engine for a track day, run a couple of bottles of octane booster in a full tank of fuel. You certainly can mix unleaded fuels together with no ill effects but a proper tune is the best insurance you can get.

[J-Boy]

Yeah i understand that nobody can give me an accurate piece of advice, i've been mixing octane boosters fer track days in the past and the car certainly seems to run much better cuz the last tune was in japan and it definitely feels like the tune in japan was done on higher octane than 98 after reviewing the dyno graphs here, that's why im thinking of giving the racefuel mix a go. Just wondering if its safe n whether the car will run properly as i've also been adviced that race fuels mixed with BP ultimate is a better alternative to octane boosters as octane boosters are not that good fer the engine. I'm not too inclined with knowledge on racefuels n am just hoping to get some sort of advice.