Sump buffles

[Billman]

I have done it today and it drops :-)

[A80Avant]

If it always drops, then how detrimental is it for the engine? As all 5cyl engines would have this issue

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[Billman]

Maybe just an extra safety

[Thuppu]

If you use full boost and max rpm's on a 400-600hp engine and your oilpressure drops to zero for a second it's propably "bye bye then".

[A80Avant]

Never seen that happen, and if that was the case it doesn't have to be an 400hp engine. It can happen in any engine

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[Thuppu]

Yes, of course. Oil pressure drop is not good at any time. But on a high power engine at full load the bearing are gone stright away. Havn't experienced it my self but it's what I have heard.

[Thuppu]

Here is RWD19T's sump mod:

http://www.s2forum.com/forum/showthread.php?t=43652&page=11

[Billman]

I have searched a bit about those buffle and also found these designs:

with hinges from

http://www.rx7club.com/

I maybe fabricate a buffle system on my spare pan for the next time the pan is out.

[A80Avant]

pictures cannot be seen Bill

you need to download them and save them in the forum, not as links

[Billman]

pictures cannot be seen Bill

you need to download them and save them in the forum, not as links

done

[A80Avant]

nice work there.

[Thuppu]

Those rubber flaps are hard to find. I'll tried to find some... Cosworth made them, but seems they don't sell them separate. BMW M3(e30) has them as stock in the oil pan, part number 11131309428 item 8 in the pic http://www.realoem.com/bmw/showparts...72&hg=11&fg=10 but they are quite expensive, 14 euro each and you need maybe 6-8 of them. Thats why I did steelflaps at 0 costs.

[quattro84]

I've seen those flaps in a ~5 year old WRC car and they don't seal that well. Because of the temperature of the oil it doesn't stay completely flat over time.

[Billman]

then i am going for the metal ones. I think the mos important position is in the oil pan extension as this provides a bigger space.

[JariP]

If you have an oil pan in your hands, put couple litres of water in it and tilt it side to side and front to back, it gives you some ideas what's happening in there while driving. 45° tilting equals to 1G acceleration, I think. Stock I5 oil pans are not so bad, running out of oil in general from the pan could be bigger problem than controlling the oils movement in there.