PUSH turbo questions

[mbarryracing]

Alot depends on how much, how long you are building boost, and how often because once the system gets heat soaked and the intake temps soar then that is where detonation starts to occur with marginal fuel.

You can run 25 +lbs of boost without an intercooler for brief periods of time if you never get anything hot... But once it's hot then there is nothing to cool it back down. All it takes is one WOT pull with a heat soaked system to wack a head gasket or piston ring land, suppose it comes down to the risk your willing to take. But some guys are even going as far as putting water meth on their sleds, even with an intercooler, just for the safety margin with mystery trail gas...

Really I am not trying to argue that a sled won't run correctly without an intetrcooler. I am just rtying to make a point that because we don't have built in knock control like the "ditch pickles", you really want as much safety margin as possible to accomodate variation in fuel quality, has nothing to do with if something will run with hotter intake temps or not... Hot charge temps are NOT desireable anyway you slice it unless you are trying to run methanol and need the heat to vaporize the fuel better...

 

[petetown]

I dont think yamaha would make it a factory option if it wasnt reliable.

 

[mbarryracing]

Your right. Totally reliable sitting on inventory shelves around the country... Might be why they are giving them away with the purchase of a key ring and case of Yamalube. How about the 100's of threads on the forums from all owners raving about them.

 

[petetown]

only one place sells them as cheap as 2500 for the kit thats ebay and your rude you prick

 

[judger101]

i think for the right person, situation, and riding style it would be a great option

 

[tjc]

no need to make it a pissing match. Why dont we stick to the facts so we all can learn.

 

[TBird]

Some will always have strong opinions, especially when discussing snowmobiles .
I have no experience what so ever with the Push kit offered from Yamaha last season, but remember, Yamaha never offered it for low altitude, so suggesting it's a good kit because Yamaha offered Push for high altitude one year, and not anymore, is pushing it (no pun intended), since the thread creator asked how it will work @ low altitude, just my reflection from reading way to much on forums!

 

[petetown]

would be nice to get some more feedback from ppl who have run theses at low elevation.

 

[sheetwright]

Ya I talked to the owner of push and one of his biggest dealers. They adjust the clutch to make the boost for sea level. Yes the kit is made a little cheaper by using a chinese turbo. I was told by another builder that push had mounting bracket issues in the past.The price for a guy running low boost is good. It may not be the quality of other brands but the basic principles work for under 8lbs at sa level.The issue with push and Yamaha was delivery and cost to Yamaha I hear. They wanted more for less and push wouldnt/couldn't do it from what I hear. Don't know if it is true but I was also told that mpi and push when tested originally were tested at 10lbs. Then both were dropped to what Yamaha felt was a safe level to warrant. Which as you all know is 8lbs for elevation. So if Yamaha feels the two pound decrease is correct to cover your and there butts I can see why builders don't want guys going over 6-7lbs without more upgrades at sealevel to make the engine safer. I'm sure you can go higher and I know guys that do with these, but my concern with this is that mountain guys do pulls up chutes or side hill on and off for a lot less time then us flat landers throttling in and out of turns with a lot more oxygen. Yes there are better kits like mcx, powderlites, fpp etc but I believe that if guys set these 180 kits at safe levels, use gauges and watch temps they should be good for low boost. If not Yamaha wouldn't be offering them.... Also as a side note the dealer in Minnesota who is selling these has demo/rental sleds with theses on them. (mtx)