• We are no longer supporting TapaTalk as a mobile app for our sites. The TapaTalk App has many issues with speed on our server as well as security holes that leave us vulnerable to attacks and spammers.

Cooling down the intake temps when warm out - hot!

KnappAttack

KnappAttack

24X ISR World Drag Racing Champion
Joined
Feb 19, 2004
Messages
4,695
Location
Welch MN
Country
USA
Snowmobile
2023 Sidewinder LTX-LE
2017 Sidewinder LTX-LE
Don't see much talk about the high intake temps when its warm out like up in the 30's F. Just though I'd start a conversation about it as just got a text from my bud who was riding today up in Northern WI. Temps in the high 30's and he's seeing intake temps way up in the 90's when getting on it. Keep in mind this is a bone stock machine and no plugging of the intercooler with snow.

He's seeing RPM up at 8950 and 9000 range, when intake temps get up into the 90's, the R's fall right off to 86-8500 and sled slows or hits a wall. Seen the same thing last week up in the UP with mine and the 240 or 270 tune in it when temps were up in the high 30's last week. In the single digits not nearly that high. Sustains power much longer when colder out. Temp rise when warmer is much greater than when cold out. Rise when warm is aobut 60-70 degrees, when cold maybe 40-50 degree rise on a pull. ??? What are others seeing? Don't know how anyone could run hard in the deep snow with it like this. Maybe cooling with snow would be better to a point.

I don't know if air isn't getting thru the intercooler because pressure builds behind it at higher speeds, or if things are just getting that hot and can not be controlled with the stock intercooler. It would sure seem you'd get a ton of cooling air thru there at high speeds, but without work in the wind tunnel, perhaps there is not good flow thru there. Things heat up very fast in the intake whether stock or tuned either way.

Very disappointing that temps can't be held down better than this as it really limits power and RPM when warm out. Seems temps need to be in the single digits F. to stay in check properly.

If the air cant get thru the intercooler at speed, you'd think a fan could help out there. Or is the stock intercooler just not enough?

I hate to think about putting Meth injection on, but maybe that's what it will take. Not sure a bigger intercooler will do it if there's no airflow thru it either.

Anyone running a bigger intercooler yet with info that would verify it even works?
 

Good point! Yesterday my sled lost rpm also... and I suspect that intake temp got high! And I think I know why...
 

Attachments

  • 41897DC4-B466-4FBD-B8C7-07E509873ED9.jpeg
    41897DC4-B466-4FBD-B8C7-07E509873ED9.jpeg
    67.4 KB · Views: 284
We were up last weekend when it was low single digits for highs and we were still seeing low 60's! So low 30's we would be getting pretty hot! That's with hurricane 270 race. Something will probibly have to be done.
 
I also was monitoring my air temp on the weekend . outside temp was plus 3 degrees c , or 38 f , pretty much all day , I rode lakes all day . my inside air temp was steady 39-41 f while cruising at speeds of 50-60 mph also no load on the motor as there was little to no snow on the lake , the temp would rise quickly to 60-65 f on wot pulls for roughly 5-8 seconds then settle back to 39-41 f quickly when slowing back down to 50-60 mph .
my sled is boosted with a cold air intake , I was on 285 hp program /94octane fuel .
what would be the max IAT TEMP ?
 
I probably shouldn't chime in because I don't have a tune in mine, but I ran a day last season in the warmest temp I've ever ridden in. Was almost 60F out and snow was slushy and some water on top of the lakes. Engine temp surprisingly stayed ok. Didn't notice a lot of difference in performance and kept smile on my face going across the lake.
 
My sled is stock except for the Hurricane exhaust and TPI clutching. Ran the same conditions this weekend. I’ll be honest, wasn’t paying attention to intake temp, was more worried about coolant temp. (Which wasn’t an issue even in the snirt) But I will say the sled ran as good as it ever has. Ran my highest top speed, got the best MPG, RPMs were perfect. Kinda wish I had looked at intake temps now but the sled ran so good I didn’t need to!
 
DranttelSS said:
My sled is stock except for the Hurricane exhaust and TPI clutching. Ran the same conditions this weekend. I’ll be honest, wasn’t paying attention to intake temp, was more worried about coolant temp. (Which wasn’t an issue even in the snirt) But I will say the sled ran as good as it ever has. Ran my highest top speed, got the best MPG, RPMs were perfect. Kinda wish I had looked at intake temps now but the sled ran so good I didn’t need to!
Click to expand...
TP primary and secondary?
 
DranttelSS said:
My sled is stock except for the Hurricane exhaust and TPI clutching. Ran the same conditions this weekend. I’ll be honest, wasn’t paying attention to intake temp, was more worried about coolant temp. (Which wasn’t an issue even in the snirt) But I will say the sled ran as good as it ever has. Ran my highest top speed, got the best MPG, RPMs were perfect. Kinda wish I had looked at intake temps now but the sled ran so good I didn’t need to!
Click to expand...
with the muffler and clutching changes , have you gained any top end , and has your boost level gone up ?
 
Snowaddict said:
I probably shouldn't chime in because I don't have a tune in mine, but I ran a day last season in the warmest temp I've ever ridden in. Was almost 60F out and snow was slushy and some water on top of the lakes. Engine temp surprisingly stayed ok. Didn't notice a lot of difference in performance and kept smile on my face going across the lake.
Click to expand...


Talking about the stockers is fine, but we need to talk INTAKE TEMPS HERE, not ENGINE TEMP. Engine temp is not a issue at all.
 
KnappAttack said:
Talking about the stockers is fine, but we need to talk INTAKE TEMPS HERE, not ENGINE TEMP. Engine temp is not a issue at all.
Click to expand...
Sorry, I should have clarified too. I did scroll through all things (including all temp displays) on the gauge pod that day. Again, there wasn't anything major of concern. But obviously, a tune is more boost, HP, etc. So, not necessarily apples to apples comparison.
 
If you're just cruising intake will stay down decent enough, even cruising at 80, but get into the throttle and intakes rise rapidly on a warm day. Its easy to notice if you are monitoring the intake temps on live date or on the dash if you're watching them.

Stock or tuned it does not seem to matter. They get hot fast and performance falls off when they get up there in the 1 teens to 120's F. Really notice it in the loose hard pulling warm snow conditions and warm weather when in the throttle hard.

Not sure a bigger intercooler will keep it cool for long either. I wonder if its a lack of cooling flow thru the cooler itself with high pressure building behind the cooler perhaps.
 
Snowaddict said:
Sorry, I should have clarified too. I did scroll through all things (including all temp displays) on the gauge pod that day. Again, there wasn't anything major of concern. But obviously, a tune is more boost, HP, etc. So, not necessarily apples to apples comparison.
Click to expand...

Maybe you didn't read my first post well enough. My buddy is riding a bone stock sled and heating the intercooler fast!!

Your only going to notice it when your WFO accelerating fast and the RPM drops and acceleration stops or just hits a wall after charging hard where it should keep going and climbing hard.
 
You must log in or register to reply here.

Similar threads

mainedrummer
Infrared Belt Temps Increasing
Replies
11
Views
2K
justinator
justinator
jonlafon1
Coolant temps in good snow 2022 sleds.
Replies
13
Views
2K
jonlafon1
jonlafon1
A
Traction Vs Boost and Clutch Set Up
2 3 4
Replies
55
Views
5K
AAdavis
A
SidewinderConvert
Re using the stock intake for heat exhaust
Replies
5
Views
1K
NYTurbo
N
ryama
GAP cold air intake question.
2
Replies
20
Views
4K
Janne339
Janne339


Back
Top