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Old 05-10-2008, 06:43 PM
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temp sensor on blower manifold

In stalled a 671 blower on my BBC the only place to put a temp sensor on this manifold is near the distributor.The old intake had it near the thermostadt housing.I kinda liked it there because I could tell what the temp was when the thermostadt opened.Now I doesn't read anything at all.I put the sending unit in the water pump where the bypass hose used to go.I get a reading just fine there but I don't know if its accurate.I still don't know why I don't get a reading at the manifold.I checked for air,there is water going through.I just want to make sure water is getting to the back of the block.Its a wiend manifold with the thermostadt housing on the front sideways and the backfire plate on the back.The motor runs great but I'm afraid to take it out for a long test ride and burn something up.Is there anywhere else I could put this sendor in?
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Old 05-10-2008, 07:07 PM
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It's best to install it in a cylinder head to get a true reading of engine temperature. A cylinder head is closest to the source of heat from the combustion chamber.
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Old 05-10-2008, 07:20 PM
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where is the port for this sendor

The motor is a 72 BBC
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Old 05-10-2008, 07:32 PM
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I have never seen a BBC head without a pipe plug in between two cylinders just above the spark plugs.
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Old 05-10-2008, 07:39 PM
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thanks

I'll check it out tomm.I hope it works.
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Old 05-11-2008, 11:57 AM
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you must mean

the plug thats unaccessable due to the header flange.Anywhere else?
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Old 05-11-2008, 12:45 PM
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I have 2 customers with BBC's with headers. The header flange has a cut out for access. I am surprised your header flange block's it.
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Old 05-11-2008, 02:28 PM
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Yes it does.Its and old tri-y set that I really like
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Old 05-11-2008, 02:29 PM
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its not totally blocked

but would have to be cut to pull the plug
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Old 05-11-2008, 02:32 PM
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The opening is only about 1/2 circle around an inch in diameter needed.
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Old 05-11-2008, 07:10 PM
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You should be able to drill and tap somewhere up front on the intake and install it there.
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Old 05-11-2008, 07:30 PM
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Quote:
Originally Posted by Infomaniac
You should be able to drill and tap somewhere up front on the intake and install it there.
This is the question. Would you like to pull the intake to drill and tap it, or pull the header to notch it.
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Old 05-15-2008, 06:35 PM
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I rather do niether

My exhaust finally doesn't leak and it was a ***** to install a blower(Never did it before and all parts were Ebay or swap meet stuff)It runs great its just strange that i can't get a temp reading from this port.I pull the sender and water pours out.I'm going to attempt to die grind the header flange when i get a chance.I just thought this would be the least of my worries.lol
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Old 05-15-2008, 07:31 PM
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Quote:
Originally Posted by Kilrcady
My exhaust finally doesn't leak and it was a ***** to install a blower(Never did it before and all parts were Ebay or swap meet stuff)It runs great its just strange that i can't get a temp reading from this port.I pull the sender and water pours out.I'm going to attempt to die grind the header flange when i get a chance.I just thought this would be the least of my worries.lol
Trust me; It gets better the more you work on it.
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Old 05-26-2008, 09:11 AM
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OK its done

I decided to cut out the header flange.But I did it on the car.I got in there with my cut off whet and cut a V notch then with my die grinder took my time and shaped it nice.But then I had to get a 35 year old plug out.I broke an extention then decided to use my torch first and didn't break my second extention.The new sender is in and works great.Now to see how hot the motor is running.Oh and bought all new SW gauges just for thre effort.Thanks to all you guys
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