Which turbo kit for 0-3000ft?

[Bearcat]

Help me out. Need info about turbo kits available for M8. It must run 91 oct so Boondocker kit is out of question (it requires race fuel this low altitude).

How about the others? Twisted, CPC... etc. Need facts.

Thanx!

 

[ondast]

I just got my CPC kit. It's a Race gas kit but I will be abel to run it on premium pump gas with a diferent actuator. will run mine on maybe 30/70 on everyday riding and straight 124 octane when I race.

 

[jijohans]

Help me out. Need info about turbo kits available for M8. It must run 91 oct so Boondocker kit is out of question (it requires race fuel this low altitude).

How about the others? Twisted, CPC... etc. Need facts.

Thanx!

Wrong... People in Norway has used the BD PG kit on a CF8 , 6-7psi and 98okt pumpfuel with good result... I will post my results when I get my kit ready mounted on my m8..

 

[Bell]

Talk to Shain from twisted he will set you up if you need his info let me know

 

[AKkatz]

Dale at Cutlers was the only guy that I spoke with who seemed to understand that low elevations required tweaking of the kit. But my conclusion was that given our low elevation and the limit of pump gas that it jut wasn't worth turboing a sled. I chose instead to spend the money (or a portion thereof) on lightening the sled.

 

[bullseye]

boondockers kit is ok if you have your head cut it will work at 0 to 3000

 

[AKLankford]

I myself have always thought about turboing my sled. But at the low elevation, like AKkatz, i dont think its worth it. Could it be to high of air density why turbos dont work very good at low elevations?

 

[ondast]

Like AKkatz says, talk to Dale, he knows what you will need, Great to deal with and very helpfull. And sure, you can run BD also, nomatter what kit you go with, you need to do some head work.

 

[ondast]

I myself have always thought about turboing my sled. But at the low elevation, like AKkatz, i dont think its worth it. Could it be to high of air density why turbos dont work very good at low elevations?

When my sled is done, I will show you that it works

 

[Bearcat]

I'm newbie with turbo stuff and I'm not planning to put one into my sled. There's one dude around here who would like do something different so I'm inquiring turbo/brand options here. Sled is actually CF 8 SP -07.

So, if turbo isn't that good for low elevations - what other mods would you recommend for low elevations? And I'm not talking about just adding pipe - maybe some big bore or something? Only requirements is reliability and ease of install (bolt-on stuff).

jijohans:
Did you had to modify head or was everything bolt-on stuff?

 

[AKSNOWRIDER]

I myself have always thought about turboing my sled. But at the low elevation, like AKkatz, i dont think its worth it. Could it be to high of air density why turbos dont work very good at low elevations?

there is no reason you cant make good power with a turbo at sea level..you just have to build for it..lower static compression, better fuel, bigger exhaust,meth injection.. and besides..most of our areas are over 2000 ft for sure and several up over 4000....I know doug and some others are planning on running 8pds here on their dragons....

 

[Rms Rydning]

Non of the bolt on kits out there is gona work good with pumpgas 0-3000ft, they are designet for 10000ft use. You might get away using 3-4psi boost at sealevel with pumpgas and a stock engine.

For pumpgas you will need to lower the compresion at this elevation.
A other problem with the M8 is out of fuel with the stock injectors at 200bhp.The M1000 is out at 230bhp.In a turbo you need more fuel for cooling and max usable hp will be 180-190 for the m8 and 210-220hp/M1000...

For 0-3000ft you need to lower the compression to 10-10,5:1 or put in higer octain fuel. And max 7,4psi/0,5bar of boost.

If you had more fuel,10:1 and proper tuned engine you could run upto 12psi/0,8bar. I could run 10psi for 1min WOT and 12psi for limeted times on my Skidoo 800 Turbo. There is one over here that run 13psi with a MC 900 with pumpgas with at very good tuned sled.But this engine need to be monitored/watched most of the time while riding, also the rider is a very competent turbo tuner/builder.

For this elevation I would have bought the racegas kits and 10:1 head,10psi/0,7bar and use some time on the tuning to get it work.This way you would get a sled with incredible performance.

At 10000ft they only have 100hp in a 143hp/M8. And with a pumpgas kit with 8psi they might get 150bhp and 10psi 160hp...Thats why they get away with stock compression.

I have one M1000 with only twinpipes and this gives 200bhp for long WOT runns for way less money and barly any hassle.I think this i the way to go.

Turbo 2 strokes at 0-3000ft is gona give a lot of work for the novice, be prepared, have 2 sleds...1 for riding and 1 for tuning...But its fun and you will learn a lot.

 

[ondast]

Non of the bolt on kits out there is gona work good with pumpgas 0-3000ft, they are designet for 10000ft use. You might get away using 3-4psi boost at sealevel with pumpgas and a stock engine.

For pumpgas you will need to lower the compresion at this elevation.
A other problem with the M8 is out of fuel with the stock injectors at 200bhp.The M1000 is out at 230bhp.In a turbo you need more fuel for cooling and max hp will be 180-190 for the m8 and 210-220hp/M1000...

For 0-3000ft you need to lower the compression to 10-10,5:1 or put in higer octain fuel. And max 7,4psi/0,5bar of boost.

If you had more fuel,10:1 and proper tuned engine you could run upto 12psi/0,8bar. I could run 10psi for 1min WOT and 12psi for limeted times on my Skidoo 800 Turbo. There is one over here that run 13psi with a MC 900 with pumpgas with at very good tuned sled.But this engine need to be monitored/watched most of the time while riding, also the rider is a very competent turbo tuner/builder.

For this elevation I would have bought the racegas kits and 10:1 head,10psi/0,7bar and use some time on the tuning to get it work.This way you would get a sled with incredible performance.

At 10000ft they have only 100hp in a 143hp/M8. And with a pumpgas kit with 8psi they might get 150bhp and 10psi 160hp...Thats why they get away with stock compression.

This is what I will be doing on my sled. Running low compression and a high octane fuel. Aiming to get it to run 14psi of boost at max with streight 124octane fuel. Not for everyday riding ofcourse but when I race. Looking for about the same as you, 10psi for everyday riding.

What fuel do you run? Race/pump mix?

 

[Rms Rydning]

This is what I will be doing on my sled. Running low compression and a high octane fuel. Aiming to get it to run 14psi of boost at max with streight 124octane fuel. Not for everyday riding ofcourse but when I race. Looking for about the same as you, 10psi for everyday riding.

What fuel do you run? Race/pump mix?

I run upto 12psi with pumpgas 98okt with loads of tuning into.
I plan to run 100LL on my next prodsject with 16psi one a proper tuned sled.

If you run C16 you can run much higer boost as long as the turbo big enough.
The newest record at Dynotech researce is 560bhp at 32psi/2,2bar on a 2 stroke with C23 or simular fuel....

There i diffrent ways of telling oktain.
Our 98 RON= 93PON (usa pumpgas) = only 88MON.
100LL have 100-105 MON.
C16 have 117 MON.

Its the MON, motor octain number thats important to look after on a turbo sled and need to be hige.

 

[Bearcat]

Thanx! Now there's a good info in this thread. Seems turbo charged engine needs charged time in carage too. Maybe too much for the sled owner - we'll see.

Those hp numbers aren't that huge for m8 (180-190). I've understood 925 big bore produces almost the same numbers? How much there's difference in real life between tm8 and m925?

 

[w2bridin]

low elev. kits and heads?

I would also like to know the best kit or kits to stay away from being ridden some at low elevation? If I was to turbo a 2010 m8 would I just put a 2009 m8 head on or does someone make a better head for PG turbo apps at 1000ft elev.? I would like to run low boost with 91oct. @ 1000ft when riding it here at home and still be able to go out west @9000 ft crank it up a little 9 or 10 maybe with some 100LL?