Type 4 Temperatures

[zen]

i have a RAT 2316 running 9.7:1 on 93 octane with 2.0 liter heads at 44x38 under a DTM v1. i monitor #1 and #3 with spark plug sensors into a dual Westach. in city and highway i average about 235-240. under load i will get to 250. the hottest i have gotten them is about 265. this seems to be low compared to most i have talked to though.

oil temps average 205. i have never had them about 225-230. remember, load makes head heat, RPMs make oil temp.

[oasis]

Interesting you monitor cylinder #1 as it is my coolest one. I'm not too worried about my CHT's as I have to be going at it for quite a while to reach 300. Yours seems lower than most.

I am a little concerned about my oil temps, however. Although I didn't have to stop twice like others convoying to Toccoa (before meeting up with you), I do not like those temps near the upper limit under any situation.

I have a little spring fix that was suggested to me. It is possible some oil never sees the cooler.

I suspect I am going to need some sort of auxiliary cooler and/or sump. We'll see. If I do, I am going to have to investigate what to get and where to put it.

[Sandeep]

I've got a 2.0 turbo T4 and my head temps run about 280F to 300 F cruising and about 330f to 360F when I'm really on it. I monitor head temps at all 4 sparkplugs through a datalogger.

Sandeep

[JIMP]

Hello Sandeep

what type and brand of datalogger do you use for your application? I'm really interested on something similar

JIMP

[oasis]

Originally Posted by Sandeep

I've got a 2.0 turbo T4 and my head temps run about 280F to 300 F cruising and about 330f to 360F when I'm really on it.

Originally Posted by zen

oil temps average 205. i have never had them about 225-230. remember, load makes head heat, RPMs make oil temp.

Just read this again for informational osmosis to take effect. Coupling this with Sandeep's response, I would assume him having a turbo is causing load.

Getting back to oil temps, I would love 200, 210 max. It takes quite a while for my oil temps to get to 200, but high speed highway driving over some distance has gotten me to 220-225. As I said, I will try the quick fix with the spring but I won't be penny-wise and dollar-foolish about taking other steps.

(BTW, my set-up is much more mild-mannered. I believe my engine is set up at an 8.3:1 compression ratio and is naturally aspirated.)

[WipEout]

Awesome! Thanks a lot for the help guys! We got my car back on the road after 5 years and kind of forgot what the ideal temps should be We ran into (again) the problem of figuring out the accuracy of the Autometer Ultra-Lite gauges I bought and installed in 2001, and weren't sure if the temps we were reading were something to worry about or not... Even so, I might just replace the guages with VDO, since even after 5 years Autometer still hasn't made their gauges truly import-compatible, or at least made a line for cars other than Ford or Chevy....



WipEout

[WipEout]

Originally Posted by oasis

(BTW, my set-up is much more mild-mannered. I believe my engine is set up at an 8.3:1 compression ratio and is naturally aspirated.)

That's about where mine's at, too! I forget my CR exactly, but It is somewhere around 8:1, give or take a tenth...