Time Attack Snetterton

[gambler]

I wee video of a few laps from the practice session at Snetterton

[P20SPD]

I wee video of a few laps from the practice session at Snetterton

Watch that gauge on the left Scott on your first lap at the end of the pit straight and round coram!

From memory thats your oil pressure gauge?

Dry sump time!

[gambler]

It made scary viewing Steven. From there on in coram was only going to be flat out a couple of times if the lap was looking good. That is oil pressure. Just wish i could afford a dry sump. Then again... can i afford not to have one. Now i have to have a re-build the money i had for the dry sump is going to be spent. Then again.. it would save another rebuild hopefully. I thought the cosworth baffle plate would have been more effective.

[P20SPD]

With the smoothness of your driving and the increased tyre sizes, it was going to be pushing it at probably the 2nd worse corner in the Uk for oil surge. If you were running a standard baffled sump as well, it is still a problem, as you arent carrying a large volume of oil. Combine this with just having had 1km at high revs, there hasnt been sufficient time for the oil to return to the sump pan IMO.

The best thing we did on the Banana was switch to a dry sump. 8+ litres of oil being stored in a non surge environment has worked very well indeed.

If i was in your shoes now (having been there before), and you are going to be doing more track stuff at this level, i would strongly recommend you save up for the dry sump, because if you dont, the next time your engine goes due to oil surge, you will be kicking yourself.

Remember, your failure appeared fairly mundane, ie, no rod through block, no shrapnel everywhere, when that happens, the costs of rebuilding become far higher.

Give me a shout if you want to chat about the dry sump more.

Finally, WELL DONE on a cracking season

[gambler]

I was running an baffle from a Group A rally car in standard sump along with with the cosworth plate. Looks like it is just not going to be enough. I think dry sump is going to be the only option. I will deffinately give you a call to discuss it more.

It is looking hopefull that i have not wrecked the whole engine. After brands last year, only the heads were recoverable. A rod had welded itself to the crank. Ruining crank, pistons, rods and damaging the bore. A dry sump will deffiantely be cheaper than a full re-build.

Thanks. Its been a really exciting season. Every point has been hard fought. Its just a shame that the engine went 20 mins too early. Thats motorsport though.

Still not sure what i am doing next year. I may take a year out if im moved to CP as i can't really afford and engine re-build, dry sump and the cash required to make the car competitive at CP.

[arch]

Scott really good season for you this year I have also heard all about corum and the oil px gauge does not make good viewing, we get awy with it on our short sprints and hill climbs bit TA is unforgiving. Hopefully there isnt to much damage and good luck with what ever you decide for next year

[TrackScotland]

The best thing we did on the Banana was switch to a dry sump. 8+ litres of oil being stored in a non surge environment has worked very well indeed.

Steven: Is the banana running a ZEN dry sump kit, or something else?

[gambler]

Scott really good season for you this year I have also heard all about corum and the oil px gauge does not make good viewing, we get awy with it on our short sprints and hill climbs bit TA is unforgiving. Hopefully there isnt to much damage and good luck with what ever you decide for next year

Thanks Arch. I had slight oil surge problems at corum last year but i thought the cosworth baffle plate would fix it. It was much worse this year. I was cornering quicker though so i suppose thats where the problem came from. Fingers crossed the engine will not need too much to fix.

[TrackScotland]

Have you noticed a big difference with the 9" wheels and wider tyres?

Cosworth baffle plate... isnt that more to stop oil getting sucked up breathers... it'll still move around a lot in the pan (but you had a baffle plate in there too :S)

We killed 2 engines with surge in the Skyline (and 2 in the Impreza so far ). The Skylines main problem seemed to be oil pooling at the back of the head.

It has enlarged oil drains in the block now. Restricted oil flow to head. External oil drain to sump coming off the rear of the head. 8l baffled sump. Seems pretty stable - I was watching the oil pressure gauge round coram (when out with Fee on MLR day) and at a reasonable pace it was rock steady at 6.5bar.

I think our main problem used to be simply not having enough oil. We had a high flow oil pump and a standard size baffled sump. I think we'd pretty much empty it quickly and cause surge at high revs on corners!

[gambler]

The car deffinately feels more stable at high speed. I even noticed a significant difference on 225 profile tyres going from 7j to 7.5j just with the tyre being squarer on the rim. It did take me a while to work out what was wrong. I have not been on the absoute limit with the new wheel/tyre combo as i was saving that for after a safe lap in the final. I had been expecting to come off at corum then :-D

I think your right Adam.I was just on a standard flow rcm oil pump for that reason.

Maybe someone will do us a deal on 2 dry sumps!

[TrackScotland]

I've just been thinking about that. I got a price from Pavlo/Paul before but cant r'ber what it was.

Need to count up the pennies though

[RA Dunk]

I got a price from Pavlo/Paul before but cant r'ber what it was.

Somewhere in between two and two and a half K seems to ring a bell IIRC!

[gambler]

Somewhere in between two and two and a half K seems to ring a bell IIRC!

Ouch! Its in the ballpark i was expecting though. Still cheaper than a re-build. The problem is when you aleady have a re-build to pay for

[P20SPD]

Adam, the Banana uses a Zen Dry sump, and it works very well.

I cant remember what the retail is on the sump kit, 2.5 to 3k rings a bell with me, and cant remember if that includes the tank or not, but ultimately its the safest route if serious track work is your bag.

Dont forget to factor in braided oil lines too!

Steven

[braveheart]

Scott fantastic T/A, looking at the vids deffo Dry sump required for next year if you compete what ever you decide will be watching out for you all the best mate...