The Great Fandango
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| posted on 15/4/07 at 09:14 PM |
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Fazer 1000 Issues...
Hi Guys,
This is beginning to get me down a little so need some advise / help if available.
My Luego Velocity (track car - not SVA'd) is powered by a 1000cc Yamaha Fazer engine (carbs model).
The engine has been dyno-jetted and rolling road tuned to about 145bhp so it's plenty quick enough for me.
The cooling system is closed circuit so there's no expansion tank, it just jets out of the filler cap down-pipe.
As far as I can tell the radiator is stock polo. The fan is brand new.
Problem 1:
When the fan comes on, it blows the 10amp fuse within 1 second
Problem 2:
The coolant temperature steadily increases (about 1 degree per lap on most track days I've done). The performance is fine, and I stay out on
track until it reaches 105-110 degrees celsius, then I come in (not ideal and I realise I might be doing damage).
I presume problem 1 is not causing problem 2 because in travelling forward it's the airflow that cools the system not the fan itself.
The main problem I have is lack of experience with bike engines. This is a completely new arena for me.
I don't wish to ruin my new pride and joy, yet I'm so blimin' depressed with the whole thing (mainly because work keep sending me
away so I have no time to slip in some 'quality garage time'.
- Any suggestions as to what might be causing the fan fuse to blow?
- Any advise on how to route an expansion tank into the system, what tank to go for etc. etc.
- Anyone fancy making a new friend, spending a bit of time on the project, and receiving a small payment as thanks?
Any help is MUCH appreciated.
Many thanks in advance
Kyle, Leeds
He Who Dies With The Most Toys Dies The Happiest
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MkIndy7
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| posted on 15/4/07 at 09:19 PM |
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Is the fan free if you push it with your hand?
Is there any rating on it?... its possible that it could be more than 10A.
Try disconecting the fan as close to the fan as possible and switch it on.. if the fuse holds that proves all the wireing is ok.
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nitram38
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| posted on 15/4/07 at 09:23 PM |
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I would say that your fan is drawing more than the fuse is capable of and that you should fit an expansion tank with the correct psi cap.
Running with a car cap will mean that the pressure is lower than a bike and so is the boiling point of your water.
Check the fazor manual for the correct psi
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tks
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| posted on 15/4/07 at 09:24 PM |
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FAN
I had the fan isue to, it was a faulty fan! and a nasty one! When connected directly to the battery it worked fine! But on some of the turn on events
it just blew the fuse! (20Amp / 10Amp) no difference...
sow ditch the fan its dangerous!
Problem 2 is still the fan!
The fan creates a unther pressure in the nose (behind the rad) sow more air will be sucked in the car while driving!....
the fan on my bike comes on at 98degrees sow 110degrees is a bit on the high side!!
also in my opinion you should kept a bottle with a expansion zone! for increasement and decreasement of the cooling fluid! else when the engine is
cold it creates a negative pressure (can create cracks!!) also its blow ways to fat the fluid because of overpressure sow your system isn't
fully filled anymore!
Sow the fan needs to be changed and the bottle needs to be placed!!
Tks
The above comments are always meant to be from the above persons perspective.
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JoelP
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| posted on 15/4/07 at 09:25 PM |
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id try it with a 20A fuse, and the expansion tank just needs a tee in the bottom and top hoses.  Dead easy, i proper bodged mine 
I cant promise to help but i sure can have a look and chat about it 
I tracked mine with no fan for some time, was fine. I lied there actually, it blew a hose, but the hose was already damaged! Bollox, i've just
realised where that hose on my spare engine has gone now!
[Edited on 15/4/07 by JoelP]
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cossiebri
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| posted on 15/4/07 at 09:50 PM |
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Lots of shiny 'copper' piping then joel !
If it doesn't fit MODIFY it!!
Cheers BriF
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JoelP
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| posted on 15/4/07 at 09:51 PM |
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cossiebri
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| posted on 15/4/07 at 09:53 PM |
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At least it worked !
If it doesn't fit MODIFY it!!
Cheers BriF
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ReMan
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| posted on 15/4/07 at 10:04 PM |
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10A is a bit low, I would try 15A and see how that goes.
BUT>>> you should'nt need a fan to keep it cool whilst your on the move, the radiator, which is probably bigger than the standard bike
one should keep it cool enough, so it may be an airflow problem? Do you have a restrictive grille?
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Peteff
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| posted on 15/4/07 at 10:24 PM |
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10 amp is too low.
As said above. Car fans run as high as 30 amp fuses so yours will need similar.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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smart51
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| posted on 16/4/07 at 07:08 AM |
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A fan has a very high surge current when first switched on, even though the current may drp to 6 or 7 amps (75W fan) when running at full speed. I
blew a few fuses at first. Put a bigger one in. See how you go. You might have to fit a bigger fuse than you think.
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The Great Fandango
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| posted on 16/4/07 at 08:37 AM |
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Hi guys,
It seems I might have to fit a higher rated fuse in and see what happens...
I still doubt it will stop the overheating problem though.
The grill isn't what I'd call a restrictive grill - simple aluminium mesh stuff that you see on most nose cones.
JoelP, as my nearest (and possibly dearest?) I would very much like to call on your services if only to stand over me with a mug of tea in hand.
Tim Windmill, noticed you've sold the Fazer car you had!?! I'm shocked - you must have been a little sad to see that go. As long as
it's gone to a good home eh?
Of course another problem I have is that being only a track day car, I don't get to check my work until the actual event.
I think a lottery win is required : -
I'll buy huge bit of land, design and build a test track, and let you guys use it for free. Wishful thinking eh?
He Who Dies With The Most Toys Dies The Happiest
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Andy W
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| posted on 16/4/07 at 03:23 PM |
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My fan draws 15amp on start-up. Some of the aluminium mesh can seriously restrict the the airflow, try putting a house hold fan behind some mesh and
see how much air flow it lets through
Andy
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tim windmill
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| posted on 17/4/07 at 08:56 AM |
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hi kyle,
we ran ours with the micra rad and a header tank with the bottom hose fitted with a tee to it, never had any cooling issues whatsoever had an
adjustable fan control switch set at 95 degrees and hardly ever came on, fan was a push fan mounted in front of the rad
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