onfire

Did a search. Looked like a lot of failures up to June 2016. Any quality 170F stats out now ?

rflow306

I have the mishimoto 160 and no problems so far. The mishimoto has a seal that is very similar to the factory unit. My car is tuned.

onfire

Thanks !

Anyone using a 160 without a tune ?

wagoetzmann

160 F didn't work in my car without a tune due to weird electrical things happening like AC quit, radiator fan kept running and engine temp gauge went to 100F. Also I found the gasket loose on my 160F Mishimotor when I was removing it.

I now have a 170F without a tune which has been working fine for 1K miles. Bought it from Katech but it is actually a Summitt SUM-366-170.

C7/Z06 Man

What temp range does your car stay in with this stat when daily driving/cruising? and the outdoor temps to go along with this range.

onfire

My guess is the coolant bypassing the bad gasket caused your problems instead of the 160F.....,but just a guess.

Somebody has to be running the LME 160 without a tune.

wagoetzmann

Had no idea the gasket was coming out. The weather had been cooler and engine temps were being maintined around 160-165F with no issues. I have been told at 160F the lower temperature violates a permissive in the stock tune.....engine too cold for too long.

onfire

A 170 is fine by me. Thanks for the part number. Does the build quality at the seal look better than the 160 that failed ?

onfire

Are you still happy with the Diablo tune ?

onfire

This pic from Summit looks like it is built well.

wagoetzmann

Actually the Mishimoto appears to be a better build than the Summitt. If the Summitt gasket fails and causes me trouble the next move will be to try to glue the gasket in place.

With 60F outside air and car moving down highway the engine temp ranges in the 170-175F. Once air temps start going up so do the engine temps. With 80F outside air and car moving down highway the engine temp ranges in the 175-180F. So far the highest I've seen engine temps were 190F in stop and go traffic with air temps around 85F....of course I was using the AC which I believe keeps radiator fan on.

C7/Z06 Man

The stat is set to begin to open at 160 degrees so you should not be seeing 106 after warmup. I have one in the drawer (stat made in China). Waiting for them to make a 170 or someone else with a redesigned gasket like the stocker.

I'm not sure of the temp but if the car stays under that temp for to long it with set a code. I think the temp is below 160 but not sure and my 170 lingerfelter stat would heat up quick like the stock stat and cruise around 180-182 most of the time in 7X temps.

wagoetzmann

Typo - should have been 160-165F ..... sorry.

ACS55

Without a tune, you will have problems with a 160 thermostat. CEL, erratic fan operation, etc. this is the info I found through research on here.

The lowest you can go without a tune is 174.
I got the 174 lingenfelter LS3 thermostat and the LMR therm housing. So far so good.

We still need a way to engage the oem engine cooling fans at lower temps without a tune, as far as I know no one has figured this out yet.

It it would also be nice to be able to operate the elect water pump as well as the rad. Fan manually while the car is off, to expedite cooling between drag runs.

davepl

If the DashLogic guys can display knock count on the center stack, they seem to be pretty far into the electronics. Someone should see if they can figure it out!

I'd buy a module that gave me water pump and intercooler pump control and that lowered my fan set points, for example.

rflow306

It cruises around in the low 170 range, outside temps in the mid to high 80's. I changed the temp scaling in HP tuners.

onfire

No tune ? LPE stat high quality ?

C7/Z06 Man

Looks like the lingenfelter to me, it did last awhile but the gasket came off and is now in the radiator doing no harm. Lingenfelter stop selling them and have not come out with a replacement yet.

onfire

Bummer.

onfire

Which part number for the 174F LS3 stat from LPE fits the LMR housing ?