JPSC Forum

Good morning,

As the Sun was out, I thought it would be rude not to take out the Fury on the chilly weekend we just had

Just a few questions really, After a warm up and about 30mins of steady driving the oil temps never exceeded 48/50c. Is this normal? I am completely new to BEC and their characteristics

Bit hesitant to give it the beans at 50c.. Or am I being too over careful?

Oil is Castrol Power 1 using the standard R1 5PW oil/water cooler
VW Polo rad

Regards
Chris

Saw Adi's reply on LCB... but just to back that up - check the stat, water should be running at at least 70 deg which will drag oil temps up due to the heat exchanger.

The oil will protect sufficiently from around 50 deg, you can start using wider throttle openings and more revs from this point which will bring the oil temp up some more pretty quickly

Great thanks!

I presume I just need to remove the two bolts to get access to the stat in this unit? It seems to be very sealed

No probs.

Yeah, it's usually a two-piece affair, with the 'stat itself sandwiched in between. This isn't an R1 but gives you the idea...



A good test is to stick it in a cup of boiling water then let everything cool down. Stat should open fully when the water is 'fresh', then gradually close as it cools down.

There's often a gasket or O ring between the two halves of the housing that needs taking care of - either replacement if it's a gasket (or you can make one with a bit of cereal box and some RTV) or a light smear of silicone grease if it's an O ring.

Edit: Here's a 5PW stat housing in bits:

Thanks Adam!

Will try and carefully prise it open at the weekend.

Have been looking on the web just incase for a replacement (Part: 4FM-12410-00) but struggling with any sites selling them in the UK

Have you got the Yamaha 5pw workshop manual? If not PM me your email address and I'll send you the file.

Cheers Adi, I have a Haynes manual that I used

Well took it apart and it wasn't stuck open. Tested it opened and closed with some boiling water and that looked all fine too

If you want a copy of the Yam one as well just let me know.

Where is your oil cooler water out/return plumbed into?
In original config' I think they go into the rad bottom hose, so feeding back into the engine and all water to the rad goes via stat and top hose. In cars they are often plumbed into the rad top hose (mine was). If done that way the oil cooler return goes through the rad before returning to the engine, giving partial cooling without 'stat control. Thats fine on track or in hot weather but slows warm up in cold conditions.

Sure thanks, will do.

I cant remember from the top of my heat as Fury HQ set it all up for me

Gotyour message and will send it tonight.

Are you using the Yam' clocks or aftermarket ones? Just wondering how true your readings are. An infrared thermometer is useful for double checking. If you've not got one they had them in Aldi a few weeks ago forabout £12 and might still have a few. Very handy for checking engine temps.