Coolant --
Coolant --
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Jonny weggie

Original Poster:

1,607 posts

221 months

Monday 22nd June 2009
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Coming home from the wedgefest found that the car sitting at 80 degrees motorway driving [normal] and yet when slowed down to 40/50 mph tempature guage went up to 90 degrees, does anyone have any idea's on this, havent had a chance to check anything yet.[350 wedge].
jonny.

bigall

64 posts

221 months

Monday 22nd June 2009
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hi my 350 allways runs at about 90 i thought that was normal

TVRleigh_BBWR

6,553 posts

243 months

Monday 22nd June 2009
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You get extra cooling due to the extra air flow though radiator, at speed so you will run slightly cooler at speed. most of the times at that speed your fan will never come on. 90oC is fine though, once you start to go over 98 then you may want to start worry.
Still got a few gremlins in the racing and one of them is cooling, was running 103-106 in the second race at brands, I it was at 4500-6200 RPM for the full 20mins, without any problems. It's only a temp engine, so did not overly care if it blew-up. but it was fine (would not run the 400SE that hot though), so would not worry too much at 90oC.
Will try a 74oC stat at the next race. see if that help. was strange as at Rockingham it was running below 90oC air temp was a lot cooler, plus was pushing harder at brands.
Also will have a new splitter soon, so when I fit it I will make sure more air is channeled though the rad, as currently a lot can go round, plus having the rad at a angle can't help.

JR

14,332 posts

288 months

Monday 22nd June 2009
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Jonny weggie said:
does anyone have any idea's on this?
Yes; your car sounds fine. The engine was generating a lot of heat and once off the motorway no longer had a strong breeze to cool the rad. No need to worry unless it goes into the late 90s for a prolonged period. A usefull precaution is to check that the temperature guage is accurate.

JR

14,332 posts

288 months

Monday 22nd June 2009
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TVRleigh_BBWR said:
beat you to it.
Doh!

jmorgan

36,010 posts

314 months

Monday 22nd June 2009
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To help things along I have filled the gap between the spoiler and rad with a thin sheet of metal. Suitable fixed and secured. Same with the top, just had foam on initially so now I have those filled I have started on the sides and nearly have it all leak free, that is all air going in the front goes to the rad instead of spilling out everywhere. Not sure how this works with preventing the fan sucking warm air back in through the gaps but no issues so far and think there was plenty of opportunity for the warm air to get back in but might be barking up the wrong tree there. Cooling is certainly more predictable.

Edit. Fan override switch is worth it.

Edited by jmorgan on Monday 22 June 11:52

mike.williams

135 posts

228 months

Monday 22nd June 2009
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Jonny weggie]Coming home from the wedgefest found that the car sitting at 80 degrees motorway driving [normal said:
and yet when slowed down to 40/50 mph tempature guage went up to 90 degrees
It is possible your thermostat is not closing. 90 degrees is the norm so if your car isn't getting to that with forced air (car moving ) maybe the thermostat is not closing. Can you compare the warm up time to another 350? Does it take longer?
On mine, (when it runs....) you can watch the thermostat open/close on the temp guage (small movement on the needle. If you start the car from cold you should be able to hold the output pipe from the thermostat housing until it opens up. You will get a rush of hot water as the stat opens. The stat should remain closed umtil the engine is up to temp (quicker warm up time with radiator not in the loop, No pun intended)

Jonny weggie

Original Poster:

1,607 posts

221 months

Monday 22nd June 2009
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Thanks for the info lads... will keep an eye on it. Jonny..

Campbell

2,500 posts

313 months

Monday 22nd June 2009
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That happens when you let Sanndy take the lead Jonny hehe

You all must have had a good lunch and im suprized we cought you up on the road...
Must get the speedo checked, im sure I was only going at 70ish scratchchin

Cambelt

Jonny weggie

Original Poster:

1,607 posts

221 months

Tuesday 23rd June 2009
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I was wondering what was causing the problem, now i know ???.
good one campbell.
jonny.

Jonny weggie

Original Poster:

1,607 posts

221 months

Wednesday 24th June 2009
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Checked the car last and found that the fans weren't working, so cut a long story short all the power is getting to the kenlowe switch at the top of rad and no power after that so thats my next job checking wires on top of rad.
jonny..

Edited by Jonny weggie on Wednesday 24th June 16:17

Campbell

2,500 posts

313 months

Wednesday 24th June 2009
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Hi Jonny

Glad you found out what has gone wrong with the cooling, im sure it wont take much to fix.
If its not to much of a prob you should think of setting up an over ride switch, this is some thing im planning on doing.

Cambelt

chedder

1,329 posts

237 months

Wednesday 24th June 2009
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Hi Jonny, don't know if this is of any help http://www.tvrwhiteelephant.co.uk/pdf/jet_boost_wi...
Think I may have a standard wiring diagram somewhere if you need it let me know and I will scan a post a copy.

Chedder,

You sure you haven't put that 'Rusty Nail' in the system instead of antifreeze? biglaugh

Campbell

2,500 posts

313 months

Wednesday 24th June 2009
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chedder said:
Hi Jonny, don't know if this is of any help http://www.tvrwhiteelephant.co.uk/pdf/jet_boost_wi...
Think I may have a standard wiring diagram somewhere if you need it let me know and I will scan a post a copy.

Chedder,

You sure you haven't put that 'Rusty Nail' in the system instead of antifreeze? biglaugh
Chedder

That would have supper charged the Wedge, its just you softer bellow the border types may not handle the 'Wee Rusty Nail' hehe

Cambelt

Jonny weggie

Original Poster:

1,607 posts

221 months

Thursday 25th June 2009
quotequote all
Excellent Tony, will get it printed off now. Must have spilt some rusty in engine bay and melted the wires. PS - must have been pis.ed to have spilt it in the first place.
Thanks again jonny..

Jonny weggie

Original Poster:

1,607 posts

221 months

Monday 29th June 2009
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Got to the problem this weekend when Sandy and i whipped the bonnet off took the wireing loom apart that runs along the top of the rad to check for the break in the wire, started to meter the wires and trying the over ride switch at the same time, fans came on turned everything off tried again nothing followed wires to the earth all looked great untill i happened to check them when 1 wire fell out hanging by a thread, put back together and works every time,sorted, so that just show's you maybe check the simple things first. jonny.. clap