oil cooler or no oil cooler

[cargo]

Your not giving too much away there are you Roger ?????

Keep em wondering

[Geffro]

neatest job is a ZX4 sump

Is that a really good idea? or a really bad idea?

please elaborate before I make a big mistake! Lol

[stuzx4r]

while fitting the zx4 sump ( you have to fit the zx4 oil pick up at the same time) does get rid of the oil cooler, it leaves you with a flat sump, and this can lead to an increased chance of oil starvation if you keep the bike cranked over for to long. to be fair it does allow you to use an exhaust that sits slightley higher, but in less your building a taylor made system your just going to b left with a gap!

lets face it kawasaki have a big R&D department, so if they think its neccesary to add an oil cooler they must have had a good reason!

i run a honda cooler on my race bike, its slightly smaller than the standard kwak job, so it fits in even with the rad dropped for the ram air scoop.

good luck chaps.

[zimm]

makes sense does that, they are shallower.. how real the problem is can only be assesed by those who've done it i guess.. i've only run zx4 motors (or zxr motors with zx4 sumps) on the road where it hasnt been a problem, but racing exposes things to different forces .....

[Fatspanner #44]

Hi guys, hope you all had a good xmas! One question on the oil cooler: Do i just block off the two holes for the oil cooler or do i need to make a link pipe to allow oil to flow?

I bought Lee Campbells ZXR for next season by the way. getting it freshened up for this season

cheers
Owen

Hi Owen. You need to link the 2 holes. Vics dad has a pretty cool plate which he made up to do the job. Always run with the cooler myself, however I don't think it makes much odds either way other than saving a little weight.

[owen]

Thanks Colin. I thought there might be more to it than just blocking them off but the engine's away getting built so i couldn't check. I'll hopefully be able to get something machined up at work

I noticed last year that you were running with it fitted... struggling to decide but think i'm just going to take it off.

Have you decided to do the 400's again thes year?

cheers
Owen

[Robbie]

Hey Owen who is doing your engine?Take it you sold the rvf?

[owen]

Hi Robbie,
the zxr engine is at YPE. Still got the honda, keeping that as a spare bike in case of disaster. hopefully, it can stay in my living room as something nice to look at!! You taken your oil cooler off yet??
cheers

[cargo]

If you look at page 6-5 in the manual you'll see an oil flow chart..........................item 25 in the drawing is a by-pass hole.......................

I'm absolutely certain that this bypass hole bypasses the oil cooler.................therefore even after blocking the inlet to the cooler oil will still successfully circulate.

It is still my considered opinion that by blocking off the oil cooler inlet and outlet holes no problems will arise with oil pressure or circulation.

[Fatspanner #44]

Thanks Colin. I thought there might be more to it than just blocking them off but the engine's away getting built so i couldn't check. I'll hopefully be able to get something machined up at work

I noticed last year that you were running with it fitted... struggling to decide but think i'm just going to take it off.

Have you decided to do the 400's again thes year?

cheers
Owen

Hi Owen.

Yes, I run with it, but I don't think it makes much difference either way. I will be doing the 400's again as I have been given a bike to race. Only problem is that it is an H model so I am not sure how it will be handling wise. I have just finished rebuilding the engine so hopefully power wise it will be good. Will find out at East Fortune test day I suppose

Ps. Did you let YPE know that you need the engine for the 2010 season

[owen]

I'm sure it'll be fast enough. who's to say it wont handle better than an L! Mine will be done, dont worry.. with much power too i hope.

If you look at page 6-5 in the manual you'll see an oil flow chart..........................item 25 in the drawing is a by-pass hole.......................

I'm absolutely certain that this bypass hole bypasses the oil cooler.................therefore even after blocking the inlet to the cooler oil will still successfully circulate.

It is still my considered opinion that by blocking off the oil cooler inlet and outlet holes no problems will arise with oil pressure or circulation.

Going back to the oil cooler, it seems you'd have to link the two pipes. If the bypass was able to pass oil as freely and easily as the oil cooler, then does it not mean that at best only half your oil would actually go through the cooler when fitted?? I would guess the bypass must offer some restriction to force the oil to go through the cooler, so i would want to rely entirely on the bypass even though the engine would be lubricated to a degree. Or maybe i'm talking rubbish

cheers
Owen

[owen]

sorry............. would NOT want to rely...............

[fletch_407]

the blanking plates that people are using how thick alluminum are they made from?
cheers

[cargo]

the blanking plates that people are using how thick alluminum are they made from?
cheers

Good question.................too thin a plate will distort when it's tightened down.........................I've use 10mm thick plate (might even be 12mm I'll check) which was orginally intended for making rearsets.

What I've made is not specially pretty but functional..................I also cut out my own gaskets.
Jusr fitted some to an engine yesterday

[fletch_407]

how thick was the gasket paper aswell then? did you use any gasket sealet aswell?