Rx7 fd gated sump?

boosted · August 19, 2016, 07:03:21 PM

Anybody know of someone that makes 1? id like to buy 1 i have 1 fitted on the westy rx8 and its awesome...zero oil in catch tank.

ive trawled the net and discovered i have a baffled Gb RE;speed alloy filler neck...that clearly does not work...

neil_jdmr · August 20, 2016, 01:48:18 PM

Me too, the only solution I found for this was to run with below half on the dipstick. Anything over just fills your catch can and or intake pipework.

The cloud of blue smoke when you next start up in the paddock is the big giveaway 😁

boosted · August 20, 2016, 06:25:10 PM

Thankfully fd's runs mafless ... more of a prob on rx8's....when a slug oil oil hits the maf.

well my penny washer trick has drastically reduced it but as im gearing up for a sump removal hoping a solution out there....

ive running the catch tank vented to atmosphere now ....and plugged the hose tail on the primary turbo elbow.

C J R · August 23, 2016, 07:43:18 AM

Jon
I think Danny at DM Motorsport used to make a baffle for the FD Sump.

boosted · August 23, 2016, 07:51:12 AM

Cool ill check it out thanks

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boosted · August 23, 2016, 08:41:14 AM

http://www.dm-motorsport.co.uk/ekmps/shops/dm_motorsport/images/rx7-fd3s-engine-strength-brace-933-p[ekm]96x130[ekm].jpg

found this on DM site , which is a plate over the top. seems to be more focused on engine flex...mmmm

boosted · August 23, 2016, 08:56:10 AM

my school of thought on this is it oil slosh, in a hard turn a slug of oil is sent back up the filler tube...and if catch tank under vacuum its carried to catch tank...and/or if vent to atmosphere then its pushed assisted as oil vapour to catch tank....

has anybody ever had there dipstick pop out? seems like theres enough restriction there to stop oil going up dipstick tube.... im also thinking of for track use removing dip stick and plumbing outlet to catch tank and running my 2 outlets on the filler tube into a t to each other then to catch tank...should be enough engine breathing?

i would say if the dipstick pops out then insufficient breathing of engine ...never had this happen on an fd or 8.

i know the gated sump works on my 8 engined westy on slicks on track...filler neck is still plumbed via catchtank to intake so under vacuum and i get zero oil in there....

boosted · August 23, 2016, 08:59:36 AM

http://www.reganrotaryracing.com/panbaffling2.jpg

i like this solution.

https://www.google.co.uk/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwjkruqviNfOAhUHLhoKHdxwBPQQjRwIBw&url=http%3A%2F%2Fwww.parts.loc8apart.co.uk%2Fnav%2Fauto-part-alt%2FMazda%2FRX-5%2FOil-Sumps%2FOil-Sump.php&psig=AFQjCNE8M-Fwlh5tzBQuerAWwE-bN87CVQ&ust=1472025427917425
standard sump....blimin great hole feeding oil filler tube....
soz for links not piccys will tidy up later.....decking duty calls. pah!

C J R · August 24, 2016, 07:40:30 AM

Jon, my previous engine (big street port (540bhp) used to push oil back up dipstick tube. I didn't understand this oil issue then, so I improved the location of the dipstick in the tube, ie; made the seal better. Result was the dipstick was pushed up from the tube and oil came out.

Now at the time I was filling the sump to max on the dipstick (on track), I know dohhh !

Speak to Clive about sump baffles, I too like the idea, but I think Clive has some knowledge.

There has to be a technology solution to the FD oil surge issue somewhere, we cannot be the only guys experiencing it.

boosted · August 24, 2016, 12:03:01 PM

Im aware of Clives findings.....
Another thought...deeper sump with extended oil pick up....
Gotta be a fix n forget solution solution 'out there' apart from dry sumping that is.

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C J R · August 25, 2016, 08:06:24 AM

Jon, Deeper sump might bring new problems as it will be below the protection of the sub frame. I also thought of wider instead of deeper, but it sits tight in the sub frame, so wider doesn't offer much scope either.

I wonder how Phil Collard got round this problem !

C J R · August 25, 2016, 08:07:07 AM

Dohhh... think he has a baffled sump.

boosted · August 25, 2016, 01:38:18 PM

Yes it would be great if the racers would share.

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re japi · August 26, 2016, 04:55:39 AM

Yes, me and few others here have been thinking that too. Would like to know what kind of "systems" everyone is using...

clive · August 27, 2016, 09:57:14 AM

Away for a few days with limited access but I will post my oil surge trials & tribulations next week