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Blanking sleeve and bypass hose https://www.ausmini.com/forums/viewtopic.php?f=5&t=85203 |
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Author: | gtogreen1969 [ Wed Apr 09, 2014 1:09 am ] |
Post subject: | Blanking sleeve and bypass hose |
When installing a blanking sleeve do you block off the bypass hose between the head and water pump? What can go wrong if the bypass hose is left in place? I noticed that the sellers of the blanking sleeves recommend to block it off. |
Author: | drmini in aust [ Wed Apr 09, 2014 9:47 am ] |
Post subject: | Re: Blanking sleeve and bypass hose |
Bypass is only there to allow water circulation in the head and block during warmup, when thermostat is fully closed. If you are fitting a blanking sleeve (and therefore no thermostat) the bypass is redundant, so feel free to plug it up. |
Author: | gtogreen1969 [ Wed Apr 09, 2014 4:10 pm ] |
Post subject: | Re: Blanking sleeve and bypass hose |
When I purchased my car it had the blanking sleeve already fitted and the bypass hose still in place. Should my engine run cooler after I block off the bypass? |
Author: | drmini in aust [ Wed Apr 09, 2014 4:34 pm ] |
Post subject: | Re: Blanking sleeve and bypass hose |
Won't make any difference. |
Author: | gtogreen1969 [ Wed Apr 09, 2014 4:45 pm ] |
Post subject: | Re: Blanking sleeve and bypass hose |
I will just leave it alone then. Knowing my luck if I stuff with it - it will start to leak. I was trying to work out why the websites selling the blanking sleeves were saying that you need to blank off the bypass. Maybe so they can make an extra buck on the blanking plugs. Thanks Doc |
Author: | Mick [ Wed Apr 09, 2014 5:25 pm ] |
Post subject: | Re: Blanking sleeve and bypass hose |
I figured one follows the other. Remove the thermostat to suit issues with water flow in race cars, and plug the bypass to remove a weakness in the cooling system, and simplify headswaps. |
Author: | Morris 1100 [ Wed Apr 09, 2014 6:02 pm ] |
Post subject: | Re: Blanking sleeve and bypass hose |
Call me old fashioned but I would just stick a thermostat in it. I can't see the blanking sleeve working properly on every engine. (or any engine!) |
Author: | drmini in aust [ Wed Apr 09, 2014 6:44 pm ] |
Post subject: | Re: Blanking sleeve and bypass hose |
Morris 1100 wrote: Call me old fashioned but I would just stick a thermostat in it. I can't see the blanking sleeve working properly on every engine. (or any engine!) I agree, they are really just a race part. Once the thermostat is gone, warmup will be slow and you won't have control of the temp it runs at. I have one here, it's sitting in a drawer... ![]() |
Author: | winabbey [ Wed Apr 09, 2014 7:25 pm ] |
Post subject: | Re: Blanking sleeve and bypass hose |
I had one in my rally Cooper S so I could block the bypass. Main reason was to avoid having to fix a bypass hose failure while in the middle of a pine forest at 3 am on a Sunday morning. ![]() |
Author: | justminis [ Wed Apr 09, 2014 8:24 pm ] |
Post subject: | Re: Blanking sleeve and bypass hose |
drmini in aust wrote: Morris 1100 wrote: Call me old fashioned but I would just stick a thermostat in it. I can't see the blanking sleeve working properly on every engine. (or any engine!) I agree, they are really just a race part. Once the thermostat is gone, warmup will be slow and you won't have control of the temp it runs at. I have one here, it's sitting in a drawer... ![]() Yep, I'm a convert too, always run a thermostat these days, including the race car. |
Author: | gtogreen1969 [ Wed Apr 09, 2014 8:36 pm ] |
Post subject: | Re: Blanking sleeve and bypass hose |
Thanks for the input everyone. I was trying to diagnose a cooling issue my car had before it went into storage 10 years ago. And as I live 2500km away from it at the moment I am doing it from memory. I have given myself a 2 month window to get it back on the road so I want everything worked out before I start later this year. I know it needs all the brakes refurbished and clutch hydraulics redone. Fuel pump, battery, and a decent service. Not sure if I should get it rego'd in QLD before it goes to S.A or wait to get it down here. I don't want to put flares on it and I have a feeling that S.A will want the flares. They did back in 1969. |
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