billseph Posted January 1, 2013 Share Posted January 1, 2013 Anybody know off hand what size threads the water temp sender and oil pressure sender are for L28ET engine. I figure it'll be BSPT so I'd like to get the proper adapter for the Autometer electrical sender/gauges I'm ordering. I understand that NPT will not seal properly into BSPT threads, so I'd rather not risk getting a leak from using the wrong fittings. Thanks guys. Quote Link to comment Share on other sites More sharing options...
NewZed Posted January 1, 2013 Share Posted January 1, 2013 (edited) The oil sender is 1/8". Here's the numbers for an adapter nipple from McMaster Carr that I ordered in the past, for a similar reason (mechanical gauge on block). 2 2 Each 5832T121 BSPT-to-NPT Threaded Brass Pipe Nipple 1/8" Pipe Sz, 1-1/2" L, Threaded Both Ends, Sch 40 (Same as 5832T2) today $3.14 $6.28 If I had to guess, I'd say the water is 3/8". You could grab a 3/8" NPT nipple from any hardware store and compare. The two types look almost identical, the NPT tip is just a hair too large to get started easily, even if you wanted to try forcing it in to the BSPT hole. Edited January 1, 2013 by NewZed Quote Link to comment Share on other sites More sharing options...
billseph Posted January 1, 2013 Author Share Posted January 1, 2013 (edited) Thanks for the info NewZed, 1/8 for oil and 3/8 for water were indeed correct. Stumbled across this thankfully http://store.42draftdesigns.com/Lancer-EVO-18-NPT-Oil-Temp-Adaptor_p_54.html Searching elsewhere online, I wasn't able to find a reducer like this anywhere. This looks like a nice solution...hopefully all goes well. 1/8 BSPT male to 1/8 NPT female is actually an Autometer part, so that was an easy find. Edited January 1, 2013 by billseph Quote Link to comment Share on other sites More sharing options...
Xnke Posted January 1, 2013 Share Posted January 1, 2013 The water temp sensor is M16x1.5mm, not 3/8". The thermotime switch might be different, though, I don't know. Quote Link to comment Share on other sites More sharing options...
billseph Posted January 1, 2013 Author Share Posted January 1, 2013 Thanks Xnke, that makes sense as it's another Autometer part... http://www.jegs.com/i/Auto-Meter/105/2268/10002/-1?parentProductId= I can go ahead and verify this with a bolt I guess right?? Quote Link to comment Share on other sites More sharing options...
josh817 Posted January 2, 2013 Share Posted January 2, 2013 While we are on the topic, anyone know the thread size of the water outlet at the back of the head? Quote Link to comment Share on other sites More sharing options...
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