NA Performance RB26

[RussTaylor]

Another thing a friend is trying is he's fitted an intercooler for his NA engine, just cooling the intake for him, thought it might work and be a bit novel.

[Derby]

I'm gonna look for the bio-ethanol thing.

And the intercooler for an NA car...that isn't gonna work. the internal resistance is quite high of an IC.

I think he is fucking up power.

Derby

[RussTaylor]

Hadn't thought of the resistance, I won't say anything to him and have to see how it goes

[SkylineUSA]

An IC on a N/A engine? WTF is that about.

[RussTaylor]

Well I know I don't need to spell it out for you

But thinking about it (I hadn't up till now) I cannot see the point of it. Its cooled by air (it's not a charge cooler) so there is zero advantage to it.

When I see him at the weekend I'll investigate it and see what the hell he's up to

[Derby]

About bio ethanol as promised

"Generally, the higher the ethanol component of a gasohol blend, the lower its suitability for standard car engines. Pure ethanol reacts with or dissolves certain rubber and plastic materials and must not be used in unmodified engines. Additionally, pure ethanol has a much higher octane rating (116 AKI, 129 RON) than ordinary gasoline (86/87 AKI, 91/92 RON), requiring changes to the compression ratio or spark timing to obtain maximum benefit. [5] To change a pure-gasoline-fueled car into a pure-ethanol-fueled car, larger carburetor jets (about 30-40% larger by area) are needed. (Methanol requires an even larger increase in area, to roughly 50% larger.) Ethanol engines also need a cold-starting system to ensure sufficient vaporization for temperatures below 13 °C (55 °F) to maximize combustion and minimize uncombusted nonvaporized ethanol. On the other hand, if 10 to 30% ethanol is mixed with gasoline, no engine modification is typically needed. Many modern cars can run on these mixtures very reliably."

More info

It probably won't work. Or he should install a truck IC or a IC with a huge volume then the resistance will drop.
Same thing with NOS for NA cars... it helps a bit but it was never designed for that matter.

Derby

[RussTaylor]

That's brilliant Derby, thank you. I don't think there will be that much to replace to use bio ethanol, we were talking at work and valve stem seals, fuel lines, fuel pump maybe, and any plastics that are used on the RB engine?

I live in Somerset, usually just farm land but!!

Originally Posted by http://www.britishbioethanol.co.uk/

Bioethanol is currently available in a 5% blend at over 250 Tesco petrol stations in the South-East of England. This petrol is supplied through ordinary unleaded petrol pumps and is not identified as bioethanol-blended petrol.

Morrisons have now begun to sell E85 petrol (85% ethanol, 15% petrol) at the following Morrisons filling stations:
Albion Way, Norwich, East Dereham, Lowestoft, Diss, Ipswich plus five sites in Somerset. Further filling stations are planned.

Five petrol stations in my county supply 85% mix Of all the places, only thing is I couldn't drive too far! Although I could put in 99 RON with an octane booster if I got stuck. Anyway 85% ethanol, 15% petrol is called E85, which is this

http://en.wikipedia.org/wiki/E85

Which is 105 Octane This could work out to be an interesting little engine. 11:1 compression?

[Derby]

11:1 is very good possible with 105 octane. Lucky bastard

I think it is wise to have your engine converted to be able to run on bio fuel. At least when you think you will run it for more then 5 years. I'm not a tree hugher, not at all. But because it is environmental friendly the government could use a tax cut on bio fuel (I say could, I don't know how the government thinks about that. I know in The Netherlands it is a point of discussion). With the more stringent rules about CO2 emissions and all, bio fuel is a good solution to get within the limits of the Kyoto treaty. And when the price drops it becomes more interesting, right?

About the parts that you need to change, don't underestimate it. BOV, all rubber hoses, sealed bearings, valvetrain cover sealing, rubbers of the throttle. Rubber is used everywhere in and out of an engine. Just don't try to save money on it.

Derby

[RussTaylor]

Yeh, I think bio ethanol must be fairly future proof, seems a good way to go. And if it isn't I could still run another high octane fuel (99RON petrol with booster).

I think you're right not to underestimate the amount of rubber/plastic. My trouble is I've only worked on 70s engines where there was little/no plastic At least there will be nothing to perish this way.

http://www.skylinesaustralia.com/for...owtopic=119495

I'm also posting there, considering using the RB30 with an ATI balancer, but they still think 7500rpm is pushing it. I want 10k! lol. The higher the rpm the better for my NA performance.

Hmmm

[RussTaylor]

Oh and my friends N/A with intercooler was a wind up, he semi fitted it and took photos for us before the drag season to throw us off lol.