13 replies to this topic

[Alburglar]

Hello folks,
Everyone I have spoke to with a bike engine kit car has told me to put a baffle the sump. I've looked into it and for £65 it seems a good idea. These folks ( https://www.fluke-mo...products_id=169 ) sell one that simply bolts in under the oil pick up pipe.

Has anyone else put one in, or killed an engine at the track by not having one?

Edited by Alburglar, 11 December 2006 - 05:37 PM.

[Oldskoolbaby]

After speaking to Lynx AE last friday, I was told that baffled sumps ar a waste of time. Jon races his own designed LR1 so he should know as he takes reliability very seriously with his car. After all the LR1 will corner and stop alot better than any Mini.

Edited by Oldskoolbaby, 11 December 2006 - 09:40 PM.

[Alburglar]

Well I haven't heard of of z-cars blow ups, but the two guys seperately who have raced bike engine cars and side cars have told me it's a must.

Anyone else had any experience?

[gizmo]

yes we do here in states.any time you take bike engine and stand it up permanent you should baffel its sump. in a bike it leans and cintrifigle(?) force feepsoil in sump/pickup. in car it sloshes from side to side. any how if you burn bearings just once itle cost alot more than 20/30$ to fix

[koss]

Al I read an interesting article about this topic somewhere on the net (cant find the link just yet) the dry sump was the safest method but expensive. Sump baffles have to be of good quality as the cheaper ones can crack due to high freqency vibes.
i have seen a busa engine with a hole in the crank case result of home made sump baffle. One the site i was reading most people just put a little bit more oil in and had no probs. modern bike engines are not as prone to oil surge like when riding on the back wheel for miles.

[Alburglar]

I might buy one and decide if I'm gonna fit it, if it looks beefy enough.

[supermotolee]

i got one off a guy on ebay who races bike engined cars i'm going to be inspecting the gearbox and clutch on my 4xv motor so might as well put one in it seems sturdy and as long as it doesnt break it can only help

[Dick Dastardly]

I've baffled mine.

Peace of mind and all that.

[adyzr1]

chris told me a while ago its not needed in a z cars r1

most kit cars have them as the engine is bolted in front to rear and not transverse, i.e alot of oil surge under hard braking
(see pic)

Attached Files

•  r1.jpg   32.67K   14 downloads

Edited by adyzr1, 14 January 2007 - 11:13 PM.

[fishywick]

I have a little experience of bike engined kit cars, but of course their engines are almost all mounted
front to back, the opposite to the bike.
In these circumstances it is generally accepted that the R1
should have a baffle, no need for dry sump even on a track.
A Busa is generally Ok on the road with a baffle but for track
a dry sump is a necessity.

Don't suppose that helps because you are all transversely mounted but thought I would mention it anyway!

[Alburglar]

I think I'll put one in anyway - For £60 it's peace of mind for little money

[z cars chris]

we have never baffled a sump unless we have had to cut the bottom off it for ground clearance and therefore lost some of the capacity and the "sump" effect of the lowest part of the sump
we always run with the oil level at the top of the sight glass when the engine is ticking over on level ground this means that the oil is fully around all the internal oil ways and running back into the sump from the head etc
you can get about half to three quarters of a litre of oil out of the sump and into these parts of the engine therefore by filling the sump level to the top of the sight glass when ticking over you are ensuring an adequate supply of oil at all times
if you look at the level when filled to the std height in the sight glass it actually empties it out as its pumped around all the galleries
chris

[PushingTin]

I had an engine failure on Thursday, I've yet to take out the engine but I suspect oil issues with high G... Time to play with a new motor and tweak!!!!

PT

[Birdman]

I have the Hayabusa in my Monte Carlo.  Rigid mounted sideways of course.  I blew my 1st engine from starving it of oil in the corners.  1st thing I did was add a low pressure idiot light, a really big 2" LED light that comes on at 25 psi.  I then modified my stock pan.  Cut the bottom off and welded a bigger sump on it.  The sloping sides act as baffles, but I also added a baffle at the front to stop losing oil pressure durning hard braking.

Attached Files

•  4.jpg   27.68K   16 downloads

Edited by Birdman, 08 September 2013 - 02:30 PM.