Hi guys, what sump are you guys running ?
Standard sump with baffle, billet sump, billet sump with swinging pick up, dry sump system.
Not sure what to go for and the pros and cons of them ?
Cheers
[Edited on 24/7/12 by Relph]
I was in a similar situation myself, really depends on what you intend to use the car for - 'spirited' road driving a swing/billet sump should suffice, when you start adding sticky tyres or track days into the equation then dry sump would be prefferred.
Shortened baffled sump, accusump no problems encountered current engine been thrashed to within an inch of it's life for four years now.
Hi, whats the difference between a dry sump and an accusump ?
Cheers.
quote:
Originally posted by Relph
Hi, whats the difference between a dry sump and an accusump ?
Cheers.
So im thinking a billet sump with swinging pick up and an accusump should do me for spirited driving and the odd track day ?
Depends how good billet sump, if its as good as the 1ltr bike engines that are around, then no need for accusump unless your on slicks/downforce. Stick with just billet sump + swinging pickup.
I ran an accusump and didn't like it at all. It took oil away from the engine at high rpm, and I had to rev the engine to 6k to reprime the
accusump before turning the engine off. I wish I'd just gone straight for a Dry sump or just picked another engine.
In my hindsight I'd either go for just a holeshot swinging pickup/billet pan with money in the bank for a rebuild, or go for the dry sump route.
quote:
Originally posted by Custardpants
I ran an accusump and didn't like it at all. It took oil away from the engine at high rpm, and I had to rev the engine to 6k to reprime the accusump before turning the engine off.
My car is using a holeshot billet sump with Swinging pickup and seems to cope well on the road but yet to get her on a track
quote:
Originally posted by Jon Ison
quote:
Originally posted by Custardpants
I ran an accusump and didn't like it at all. It took oil away from the engine at high rpm, and I had to rev the engine to 6k to reprime the accusump before turning the engine off.
I understand you may have to rev the engine to prime it but how can it take oil away from the engine at high revs, or any revs for that matter ?
quote:
An accu won't also really work at idle under heavy braking as it won't be primed.
quote:
Originally posted by Nick DV
quote:
An accu won't also really work at idle under heavy braking as it won't be primed.
Have to disagree. Have a read of the following, it may help.
http://www.accusump.com/accusump_tech.html#whatis
http://www.accusump.com/accusump.pdf/instructions.pdf
Cheers, Nick
.
I have run one on my busa for four years, it's simple I switch it off during my cool down lap thus it sits there charged ready to pre oil the
engine upon the next start up. To say it will discharge under braking is a bit miss informed, unless of course you put your foot on the clutch and
keep it there during all the down shifts then pull to the side of the track let it tick over for 15 seconds before you accelerate away, very rarely
see the revs drop below 6000rpm downshifting on track myself, if they do I've made a mistake.
I do on average 8 track days per year, as others will testify when I do a track day it's nothing unusual for me to do up to 2 hour long sessions
at a time (see current Blyton thread) never had a sniff of trouble and this is on a STD 1999 engine that as been in the car 4 years, it's well
maintained but well abused.
For the record personally I wouldn't consider a swinging pick up, there designed for straight-line drag racing, if they turned 360 degrees then
maybe but they don't and in the right (or wrong maybe) corner situation they can be caught and stuck away from the oil rather than swinging to
where the oil is.
Imho the accusump is fine installed correctly and used as its designed to be used.
Cheers guys for your replys and messages you given me alot to think about.
Hi Jon, think my dad and me chatted to you on sunday at blyton track day about your shortened sump and accusump, your car was going and sounding sweet
mate.
Remember the conversation well, small world ?
You saw the car on track, wasn't exactly tip toeing around, absolutely no oiling problems, would recommend the electric set up I have though,
think we discussed it ?
Basically the accusump does not relaese any pressurised oil until the engine oil pressure drops below 30psi, this means the oil level is not
constantly fluctuating as suggested above (to be fair with a manual valve it would) as for the sump Martin of MK engineering did it for me, it's
not just shortened it also has internal baffles around the oil pickup, he welded a boss on for we to tap for oil temp sensor.
quote:
By all means elaborate Nick - the busa engine runs very low pressure at idle without an uprated OPG. The accusump doesn't know the difference so will have already injected its store of oil into the engine when it drops to idle. I only ran one in a busa for a year so that's based on my limited experience-it would be Interesting to see what an engine builder/racer has to say, rather than just "read the instructions!"