Possibility of engine overheating?

[Mountain SXr]

I just put AAEN pipes on my 2000 SXr 700. I have no other engine mods. Only other major mod is the 141x2" ext.

When I put the Mountain performance ext, I removed the rear heat exchanger. The kit came with a cross over tube.

With the new pipes, will the engine not run hotter? Do I need extra cooling?

I think I may put another heat exchanger in. If I can't find an exchanger, I may just run some aluminum tubbing under the tunnel and have the coolant run through it for extra cooling. I have lots of clearance from the track, so it shouldn't be an issue.

Anyone have an old heat exchanger laying around from any old liquid cooled machine?

Any opinions?

-Jon

 

[MrSled]

I run an exchanger on mine....I have never had an issues with overheat problems...but I think its worth having.

 

[Mountain SXr]

Heat

Will the pipes add heat though? I was fine last season, with the same set up less the pipes. I'm just wondering if I will run into a problem having the pipes.

Thanks,

-Jon

 

[familyman]

I dont think it would be a problem. I always keep in mind if your overheating riding your sled because the sun is blazing and the temps are mild...your sled is is feeling it two. Thats how I base my riding and determine how hard I ride and when to avoid overheating.
Brent

 

[yamaholic22]

they actually run hotter on colder days because the jetting is leaner on colder days, so the combustion is hotter, noticeably. I ran aaens for a couple years on my sx 700 with the stock small little rear heat exchanger and the temp light only came on once in marginal snow conditions (very packed trail, no loose snow), and we were riding really hard. I would say in almost all conditions you shouldn't have a problem. However, you should be able to put your rear heat exchanger back in with the extension kit without a problem...

 

[gild]

heat

I have a 01 SXR with a 151 and the stock MM rear heat exchanger of which I don't think makes much difference. I only heat up on hard packed trails with no scratchers but when I did I filled the top of the running boards full of snow and it cools the foot exchangers enough the light goes out.When this happens though with the 2" track your hifax is melting badly so I recommend scratchers on the skiis if riding in these conditions a lot. I run SLP triples and underhood heat has never melted the hood except where they rub the one vent flange.

 

[Mountain SXr]

heat

I don't usually run trails, but I have over the last two weeks. We don't have tonnes of snow, but enough to get out for a quick run.

I will have to remember putting snow on the running boards in low snow conditions. That's a great idea.

Thanks

-Jon