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ECU controls the flow of the pump using coolant temperature sensor, engine load, revs, etc. So sometimes pump is not working at all, sometimes with very high revs. On WOT water pump stops, cooling fans stop, alternator also. It's quite complex thing in S2000 car.
I think that probably this is the best topic to post this doubt I have regarding homologations.
How do they work? For example, for a certain car there's a certain brand of dampers homologated? Or any damper with the dimensions and characteristics can be used?
And what all those variant mean (VO, VK, etc...)?
you sure.....Quote:
Originally Posted by dimviii
haven t see such a system,but as the ecu controls the pump speed,can t find a reason for working pump at cold engine.Quote:
Originally Posted by bubbaontour
except if it turns the pulley slowly just to prevent from extreme heating near cylinder head? and after a point of degrees ie 70 c turns faster?
yes, I'm 100% sure. there are moments when pump is not working at all, for example after engine start in cold conditions, then as dimviii says it starts to work really slowly and then "normally". also on WOT it stops for short periods of time.Quote:
Originally Posted by bubbaontour
All we will ask for is 400k :)
How to build a World Rally Championship car | Pole Position - YouTube
A car has a basic group A homlogation where the cars dimensions, weight and all those parts which must be original in group A (e.g. intake manifold, exhaust manifold etc.) are described. By a VO (Variant Option) a manufacturer homologate the parts that are allowed to be homologated in the groups A and N and modified parts in the other groups (R, S2000 & WRC). VO is also used when a modified part replaces the previous one. VK is a kit which includes all the parts homologated for use in rallying. ER (erratum) is used when there is an error in previous homologation. ER is also used when homologating modifications to the engine. Little easier to homologate only the modification and not the whole engine for every modification.Quote:
Originally Posted by Co-driven
Parts that must be homologated varies in different groups. For example dampers are free in groups A and N but but must be homologated in the other groups.
Everything begins with a group A homologation. In group N there is a complementary homologation form where are all the parts that must be original in group N but didin't had to be original in group A. All the other parts allowed to be homologated in group N (brakes, clutch etc.) are homologated with a VO.
In the other groups (R, S2000 & WRC) the basic rallying parts are homologated in a VK and all the modifications with a VO or ER.
The explanations for the other ones you can find here
Homologations you can find here
R1A/B = VR1A/B, R2B/C = VR2B/C, R3C = VR3C, R3T = VR3T, R3D = VR3D, S2000 = KSR (VK-S2000 rallyes or SUPER 2000 1.6 turbo), WR = WRC parts (bigger rear wing, fly wheel etc.)
Here you can find homologation forms for different Mitsubishi evolutions. Citroen used to have the homologation forms for the C2 R2 on their web site but they're not there anymore.
Hope this help and hope I got it all right. :)
What is WOT?Quote:
Originally Posted by br21
Alternator stops, why?
I think that is the idea to have few more horsepowers. The pump is operating only when necessary.Quote:
Originally Posted by dimviii
If I remember correctly bubba is a mechanic for the mini wrc, so now I am really intrigued why he asked that.Quote:
Originally Posted by br21