Oil Catch Tank filling fast on right handed tracks

[dern]

Hi,

I have a kit car with an RX7 from a 2nd gen rx7 and took it to Castle Combe on Friday and was having problems with the oil catch tank filling in a single session. The setup I have for the car is the one I got with the car which is an oil line from the oil filler tube into the oil catch tank and then another oil line from the catch tank to the turbo intake between the turbo and air filter. It's perfectly fine on the road and sometimes I get a bit of oil but not a huge amount but if I'm on a track with big sweeping right handers like at Combe then the catch tank fills up and then oil gets in to the turbo intake and the air filter which makes a hell of a mess. The oil catch tank is unvented.

I've done some searches on this and my setup doesn't appear to be too weird or wrong although some do drain the can back to the sump which I'm not that keen on.

Is there any way to reduce the oil surge up the filler neck or any other way to adjust or change my setup that will stop the catch tank filling up quite so quickly. Don't mind there being oil in there obviously, just don't want it filling up so fast it escapes while doing this...

https://www.youtube.com/watch?v=M0-zm8-5Pu8

Thanks,

Mark

[neil_jdmr]

This has something to do with the baffles in the sump only being on one side,  I have the same trouble in my fd. You can pipe it to drain back into your sump but I didn't really want that waste oil going back in.

[boosted]

Sounds like this is common problem on sumps through the generations...the rx8 does this as well. Between the centre iron and plastic tube on the 8 ive fitted a penny washer that should stop/ slow oil if it reaches it. Doubt i will have this issue now as new baffled sump fitted....i think its important to return the oil to the sump in the interim as risks the engine bearings if pick up not submerged in oil.

[dern]

So I could solve or improve matters with a sump baffle? Is there anyone in the UK supplying these by any chance?

Thanks,

Mark

[boosted]

I got mine from the states...with shipping far chuck of cash. I couldnt go deeper as my 8 engine low in westfield....would be great to have some pics and specs of your car....fisher fury?

[boosted]

Enjoyed the vid.!

[clive]

Easiest option would be to fit the Racing Beat sump surge plate, also did I pick up that you have no vent on the catch tank ?

You must vent this if this is so because the system will pressurise and blow oil

hope this helps

[dern]

Easiest option would be to fit the Racing Beat sump surge plate, also did I pick up that you have no vent on the catch tank ?

You must vent this if this is so because the system will pressurise and blow oil

hope this helps

It does, thanks.

I was speaking to Karl (Carl?) at Hayward yesterday and he recommended fitting a catch tank with a vent. I'm going to measure it up when I get a minute and get a vented baffled tank with more capacity (I think mine is only 0.5l).

Any idea where I could get that baffle from in the uk?

Thanks,

Mark

[dern]

I got mine from the states...with shipping far chuck of cash. I couldnt go deeper as my 8 engine low in westfield....would be great to have some pics and specs of your car....fisher fury?

Cheers, I have to say I didn't build this car but bought it like it is about three years ago. It's an SSC Stylus running an FC turbo motor. It lost compression over the first year and then Hayward rebuilt it for me, installed a later ignition system and an apexi ecu. We've not put it on a rolling road but we're estimating it's making about 400bhp. Certainly feels quick.

This winter I'm taking it apart to clean up the install a bit, especially the electrics. During that time the plan is to take out the rx7 gearbox and install an rx8 gearbox assuming I can get the gearstick in a reasonable place. The original gearbox is like stirring porridge and the gearbox in my wife's rx8 is way better. The ratios work better according to a gear calculator I found.



Cheers,

Mark

[re japi]

Umm, what car is that? Anyhoo, seems like very fast! I liked that vid too

[RotorHeid]

Sound like worn oil control rings.

[dern]

Freshly built engine so hopefully not.

[boosted]

Does the fc engine oil fill on the centre iron? The penny washer trick should do the job. Mines an 8mm hole....need to fill oil slowly due to oil surface tensioner but should slow oil trying to fly up fill tube.