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which of these would fit the upper radiator hose?

http://egauges.com/vdo_acce.asp?Subg...daptors&Cart=1

 
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IIRC its a 30mm ID which is something on the order of 1 3/16. You could force the 1 1/4 in, but greddy sells 30 mm housings, they have metric threads though. If you got an autometer gauge, you're SOL.
Just gotta search around
Something like coolant temp gauge adapter or housing or "inline coolant temp housing" etc... is what they're called.

 
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ya i know the greddy but not sure what the thread size is. i'm planning on getting vdo gauge

 
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most of the US ones are 1/8 NPT
most of the Japanese ones (blitz, greddy, defi, apexi, etc....) are 1/8 BSPT. You can get a BSPT sensor into an NPT fitting with a lot of thread sealer, but you can't put an NPT sensor into a BSPT port.

 
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so it won't work then. hmm. unless i buy the greddy gauge which is well over $100 and not worth it.

 
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Can always DIY it....

 
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im getting too old for this. care to make me something?

 
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dude, if I still had a machine shop to go to,I'd go knock one out for you in a few hours. Unfortunately, since I graduated, I don't have that luxury anymore. I can give you the plans for mine if someone else has a shop to go to.

 
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well i have a machine shop here in town, can i just give it to them?

 
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can i use the stock hole? i don't think the ecu uses that to determine anything but i'm not sure. but then the dummy sensor wont work. hmm. i found one that is 1 inch adapter is that too small for the hose?

 
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1" is too small. I'll draw up the prints this week (they're hand doodles now) and send them to you.

 
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okay thanks. i might just get oil temp and tranny temp instead cause they are easier. i found a drain bolt oil temp plug on ebay and says for all hondas so I'll try that.