the engine i just installed in my 85 gsl, was missing this thing that i found on my other 2 cores. it is a round device that has a threaded bolt that bolts right into the block, basically right under the hard line directly under the beehive oil cooler. i noticed it wasn't there, and took one from one of my cores and installed it. it has a little screw head looking thing right on the center of it. sorry no pics. is it directly to the right of the water temperature sensor.....which i overtightened, and it snapped. hopefully there won't be any leakage, as it was pretty tight before it snapped. that's another story. hopefully i can tap another water temp. sensor somewhere else.....any suggestions on these two things?

 

oil pressure sender.

 

Sounds like the oil pressure sending unit.

Rich

 

yes, exactly!. good thing i found out it was missing and had one on another engine sitting here. so call me stupid but what does it do exactly? and is there supposed to be an electrical connector on it? what is that screw like thing on the center of it?

also, what about my water temperature sensor. i broke it off in the block. i hope it won't leak, it was pretty tight before it snapped. i have another sensor, can i tap it in somewhere else? any opinions would be appreciated

nick

 

forgot to ask....when i ran this engine, there was alot of oil leaking around the same area. i suspected the oil cooler o-rings were leaking, but could it have been because that thing was missing? by the way, i have 3 oil coolers here. (beehives). 2 of them utilise the same sized o-rings (2 of them), and the 3rd one, the one on my car seems to use different sized o-rigns. the rear one closest to the motor is the same size as the other oil cooler o-rings, but the other one seems to be smaller. is this true? i just unbolted the thing and stuck my fingers under it to install the o-rings instead of removing the whole unit adn that's why i can't just look and see.

 

the ops measures how much oil pressure your engine is making. there is a small blade type connector that attatches to it. i think the wire color is yellow with a red stripe. you oil leakage is most likely caused by bad beehive oil rings. they shrink with heat and age. if there were no ops, you would have a lot of oil leakage. as far as your coolant temp sensor, you will need some patience with getting it out. dont drill through it, you'll get shavings in the water passages which will lead to clogged water passages. it shouldnt leak though.

 

okay so that explains the oil leakage

what about a different place to tap in the water temp. sensor? i don't supppose there is a way to splice into a collant hose or something is there?

anyone know if its true that some beehive oil coolers use one larger and one smaller o-ring or is it just me not feeling under there properly (can't break the hard line loose or i'd take it right off)

 

ISC Racing

bottom of the page. use that to add a new water temp sender.

 

oh my god! perfect solution! now are those threads the same as the stock sender? because even though i broke that sensor, i still have 2 more sitting around and would rather keep it stock and usethose than go with an aftermarket sensor/guage for now anyways

thanks!

 

I'm not sure, call and ask 'em. glad I could help.

 

I had a water temp sensor that broke off, and I just drilled it out and reamed until the new sensor would just tap in with an interference fit (necessary for an electrical ground). I then glued it in with high strength epoxy. For about 8 years it has worked perfectly - there is only about 12-15 psi in the system, and it never gets any hotter than 200 degrees F, so no problem with the epoxy. This is a lot less hassle than trying to get the old sensor out completely, and only Mazda and God have taps for that extremely fine thread.

Don't be concerned about getting a few metal chips in the water system. What you DO NOT want is metal chips in the oil passages.