Hoses

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Stu
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Re: Hoses

Post by Stu »

Interested to have a look at that when I see you, Blue, thanks for the pics.

Tom, issues at idle, not at speed. Have had to have a bit of time away for the car due to life stuff going on, but got out for a spin today and ran hot at low speed and idle. Over the stat temp. Same again, temp soared once shut off.

Will swap the stat in the morning as a starter for 10.

Out of interest, a lot of different opinions on sealing the housing online.

To gasket, or to goop? (Or both)?

If both, which surface to goop?

I stuck on a Trev D billet housing a while back to replace the crap one that was on there, can’t remember but don’t think it was an o ring job…
24 hours in a day, 24 beers in a case. Coincidence? I think not…

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lemans-tom
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Re: Hoses

Post by lemans-tom »

Thanks Stu, low speed / idle cooling issues would deffo be improved by a fan shroud. This is the time that you are relying on your fan to draw cooling air through the rad, rather then forward motion forcing air through the rad. Obviously doesn't discount other things causing the overheat e.g. timing etc. I had probs with my Ch**y pickup. Couldn't get the temp to stabilise at idle, would keep climbing. Did some reading about the science behind it, put a nice tight fitting fan shroud on and hey presto, no cooling issue.
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Blue
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Re: Hoses

Post by Blue »

Gasket with a smear of silicone for me. Chuck the stat in a cup of boiling water to see that it opens before you fit it, we had a duff new one last week that caused us problems at the track. Once you've got the timing sorted most of your problems will go away I reckon.
“This ain’t no party, this ain’t no disco, this ain’t no foolin’ around”
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Stu
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Re: Hoses

Post by Stu »

Cheers both. :thumbright:

Blue, stoopid question, goop on manifold side or stat side?
24 hours in a day, 24 beers in a case. Coincidence? I think not…

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Stu
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Re: Hoses

Post by Stu »

Well, the cooler stat certainly helped today in the warm weather, so pleased enough with that. Will figure out what the hell I’m doing with the timing and have a look at that in the next couple of weeks as it clearly needs doing anyway.

Out of interest, Blue, where did you get your shroud from? Thinking that can’t hurt either. Did notice I have a slightly alarming amount of wobble on the fan today too.

Cheers for you help yesterday on my stupid question, forgot it was Brooklands and you’d be out and about. :help:
24 hours in a day, 24 beers in a case. Coincidence? I think not…

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Re: Hoses

Post by Blue »

Shroud came from Mancini racing Stu. Fan shouldn’t wobble, play is either in the fan hub or the water pump, locate it and replace whichever is at fault before it fails completely.
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Re: Hoses

Post by Stu »

Yeah, I’m not happy about it, will have a good look in the week.

Got a replacement water pump, but asked about it on another thread as not sure about it.

Will likely invest in a shroud, cheers. :thumbright:
24 hours in a day, 24 beers in a case. Coincidence? I think not…

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Re: Hoses

Post by Stu »

Ok, revisited timing today with the help of Father in law who understands better than me.

No adjustments made, we’ve got 15* initial (vac on) and 30* all in (vac off) at 2,800 rpm

Idles at around 800,

No adjustments made from there as wasn’t sure if any more was too much. 🤔

Any thoughts on this now I have the correct data?
24 hours in a day, 24 beers in a case. Coincidence? I think not…

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Re: Hoses

Post by Blue »

You need to disconnect and plug the vacuum line before you start. Go through the process to see how much initial the engine wants. Let’s say it’s 20 degrees. You want 34 degrees total, hold the revs briefly to 4000 to check that. The high initial figure will push the total figure past 34, let’s say you see 44 degrees. You now fit your limit plate into the dizzy to limit the advance to 14 degrees, you should now be able to set your initial to 20 and you will not get more than 34 degrees total. Then you can connect the vacuum and you will see it pull in even more timing which will drop out again when the throttle is opened. The book I suggested getting explains the process to find the initial timing figure. If this still makes no sense I’ll try and explain it better.
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Re: Hoses

Post by Stu »

Thanks Blue. I’ve got the download from Don, still working through it but for some reason it’s just not sticking. I’ll keep plugging. 👍
24 hours in a day, 24 beers in a case. Coincidence? I think not…

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Re: Hoses

Post by Stu »

After less beers this morning, realised I didn’t say I did check with the vac off and had 14* initial.
24 hours in a day, 24 beers in a case. Coincidence? I think not…

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Re: Hoses

Post by Blue »

Ok, vac off and plugged, slowly increase the initial listening to the engine revs increase, stop and lock it off as soon as the revs no longer go up. Give it 10 mins to heat soak and try and start it, if it starts fine you’ve found how much initial it wants. If it labours back it off 2 degrees and try again. That’s the initial done, then you see what the total is.
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Re: Hoses

Post by Stu »

:thumbright:

Funnily enough, I’m sat at the kitchen table nursing a hangover and reading through Dave R’s idiots guide to timing from a very old post on the Challenger forum. :D
24 hours in a day, 24 beers in a case. Coincidence? I think not…

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Stu
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Re: Hoses

Post by Stu »

Water pump seems to have made a massive difference. :thumbright:
24 hours in a day, 24 beers in a case. Coincidence? I think not…

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lemans-tom
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Re: Hoses

Post by lemans-tom »

:thumbright:
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