best turbo?

[CBX]

I've talked to alot of turbo owners in the last month. past and current owners. Of both efi and Carb systems.

Seems like the people that really dislike carb systems are the ones that have zero mechanical ability or knowledge.

I talked to one guy who built a turbo rev. He said tuning it wasnt hard at all. just put an AFR gauge on and away you go. He said he was surprised how little he actually had to adjust it. just turn 2 power jets. He said even at 10:1 the sled ran fine. so your down a bit of power at that level. he said it wasnt enough to cause problems. when you have an excess of power being down a bit isnt a problem. all he needed to do is when everyone stops for break, you just click down one or two on the jets and thats it. This guy is also a pretty savy dude. I've talked to 6 owners that aren't turbo savy, and they hated their sleds. never got what they wanted. 5 of them had the same guy build and tune for them, so maybe thats part of it.

one thing about carbs is that they are smart in a sense. they naturally account for airflow. EFI cant. It requires a MAP sensor to work. A carb may not be automatic, like an EFI potentially can be. After talking to a buch of cat turbo owners, I was really surprised to see some of the EFI issues that crop up. I was under the impression they were sound. main issues is consistency under arcitic cat production stuff in the EFI system. That, reeds, and exhaust hardware. Also under powered electical seems to be an issue also. thus adding to potential problems. But, nothing people who understand cant fix.

 

[Todd H]

There is a kit on E-bay right now for sale. It uses a 53 Aerocharger, and comes with everything you need to run on a Rev. Also has an intercooler. I PM'd the guy and he said the turbo is currently at Aero being re-built.

This kit in Edmonton is around $6500.00 new. Right now is a bargin at $2500.00

The kit is built by Boostwurx, based out of St. Albert, Alberta. Distributor is Absolute Power and Performance, www.abspow.ca

I think this kit is good for 210hp.

Just an option if anyone is in the market for a system.

 

[whitefish]

This may be a great solution for us Ski Doo guys wanting more. There is an electric supercharger going to hit the market beginning of next season. Exclusivly for carbed 800 XP's. Runs around 3-4 lbs boost. Adds 35-40 HP. Increases track speed 10-12 MPH. Add about 10 lbs (battery). Has been in testing for 2 full seasons. Will sell for around $1500. Production starts in July/August. I will be setting up a pre-order program very soon. Much more info to come.

 

[Todd H]

This may be a great solution for us Ski Doo guys wanting more. There is an electric supercharger going to hit the market beginning of next season. Exclusivly for carbed 800 XP's. Runs around 3-4 lbs boost. Adds 35-40 HP. Increases track speed 10-12 MPH. Add about 10 lbs (battery). Has been in testing for 2 full seasons. Will sell for around $1500. Production starts in July/August. I will be setting up a pre-order program very soon. Much more info to come.

More info. Sounds interesting. Do you have to run an electric fuel pump? Is the supercharger self oiling?

 

[CATillak]

This may be a great solution for us Ski Doo guys wanting more. There is an electric supercharger going to hit the market beginning of next season. Exclusivly for carbed 800 XP's. Runs around 3-4 lbs boost. Adds 35-40 HP. Increases track speed 10-12 MPH. Add about 10 lbs (battery). Has been in testing for 2 full seasons. Will sell for around $1500. Production starts in July/August. I will be setting up a pre-order program very soon. Much more info to come.

More info, when can we see a REVdesign??

 

[rudlandconstruction]

I am personally friends with Halverson. I have ridden his turboed M7 and his XP and have also ridden the turboed rev. I have to say in my opinion the carbed sleds seem to be in a sense more reliable than the cat. The rev had it's issues at first but it takes time to work some of the bugs out. All the weak points started showing themselves under boost but now that the bugs are worked out for the most part the thing seems to be very reliable. The last couple of times we were out he never had to touch the thing.

 

[Twin]

!!!!!!!!!!!!!!

So lets stop talk and lets see some pics and video. Lets also here about the true problems.

 

[brycter]

Hey is this the halverson that i have sold stuff to? What are you doing wih the dpm? What are you doing bellows? what are you doing with the Timing? what are you doing to the electrical? How much boost? Are you running extrernal wastegate? How are you holding on the airbox to the carbs, how about jetting for elevation? What oiling are you using for the turbo?

 

[Todd H]

So lets stop talk and lets see some pics and video. Lets also here about the true problems.

Ok, don't have any videos but a few troubles. Rave bellows were blowing off, used tie wire and seem to be OK. Jetting for the bottom and mid-range is not as easy as the top-end. I need to run different pilots and needle position at 2500' than at 6500'. And mine seems to use alot of fuel ( could be because it is too fat on the bottom and mid). Have to run a oil system that is kind of a pain, and could leave you stranded if the pump gave out.

I'm only running 10 lbs on this sled and it seems to work great. ( Mitsibushi on a Crankshop 900)

I have a 66 aero kit coming from Turboboyz for my XP and can't wait!

You honestly have to ride one and you will want one

 

[DWHalverson]

Easy Bryce, a lot of up front and in your face kind of questions. Gotta keep somethings secret until released. Not sure if this is even going to be a buisness as of now. If people like what they see, we will build it for them just useing the Garrett instead of the Aero.

To answer some of your questions: I have not bought anything from you guys but a friend of mine has. I have talked to both you and Josh on the phone and was treated very well and have even been called back. That's good service. The bellows are an issue and we use a delete valve and a block-off plate to eliminate the issues. What about the electrical? Have seen zero issues. Timing is stock. Boost as much as the engine will take. Have had one up to 15 psi. It is an internal wastegate much like every other Garrett although you can get them external, I know. The charge box has also been an issue but we have a simple fix for that.

Would you lay all your cards on the table? We are still tweeking and tuning and have some different ideas that should not offend anyone as far as design conflicts. I do understand competition and hope there is room for everyone.

Dave

Hey is this the halverson that i have sold stuff to? What are you doing wih the dpm? What are you doing bellows? what are you doing with the Timing? what are you doing to the electrical? How much boost? Are you running extrernal wastegate? How are you holding on the airbox to the carbs, how about jetting for elevation? What oiling are you using for the turbo?

 

[Fack]

Talked to DWHalverson on the phone. Really a great guy to talk to. He's got some good ideas that haven't been seen much on a carbed turbo doo. A few small changes in the right direction seems to make a big difference on the driveability of these things. Guess we'll just have to see....

-Fack

 

[DWHalverson]

Ahh Justin I knew you never liked the Cat. It must really pain you to ride with that other Cat lover. You should have kept your turbo Rev so we could have got it de-bugged.

I am personally friends with Halverson. I have ridden his turboed M7 and his XP and have also ridden the turboed rev. I have to say in my opinion the carbed sleds seem to be in a sense more reliable than the cat. The rev had it's issues at first but it takes time to work some of the bugs out. All the weak points started showing themselves under boost but now that the bugs are worked out for the most part the thing seems to be very reliable. The last couple of times we were out he never had to touch the thing.

 

[tntm7]

I have been using nitrious for 25yrs, I spray the dog crap out of my outboard tunnel boat, 225hp kit, kill 30lbs of nitrious on a short day. 635hrs on that motor and no issues, have 45shot on my m7 and hold the button till 3lb bottle is empty on way to many climbs. My Subaru I am boosting 30psi and drilled the N20 jets still it stopped making more power on the dyno, ran it 17 1/4 mile passes and tore it down it was taxen the head gaskets a bit, bit that's some crazy cylinder pessure. My busa is 11.5 comp sprayin 100 on top of 35psi boost with stage 6 wheels in a gt35R
My 540BBC has 3 stage 500hp system motor has 10 seasons on it.
Cylinder pressure is cylinder pressure, if your cramming air with a hair dryer or a bottle, both die violently when lean.

Working on a motec EMS turbo kit with anti lag, bit without anti lag system I just struggle in the trees with turbo power.

 

[tntm7]

Many nitrious problems come from the IAT seeing cold temps from n2o and advances the timing, high cylinder pressures and advanced timing tend to leave marks!

 

[DWHalverson]

My kind of guy. I bet your lawn mower is on "crack" too. Do you run anything stock/mild??

I have been using nitrious for 25yrs, I spray the dog crap out of my outboard tunnel boat, 225hp kit, kill 30lbs of nitrious on a short day. 635hrs on that motor and no issues, have 45shot on my m7 and hold the button till 3lb bottle is empty on way to many climbs. My Subaru I am boosting 30psi and drilled the N20 jets still it stopped making more power on the dyno, ran it 17 1/4 mile passes and tore it down it was taxen the head gaskets a bit, bit that's some crazy cylinder pessure. My busa is 11.5 comp sprayin 100 on top of 35psi boost with stage 6 wheels in a gt35R
My 540BBC has 3 stage 500hp system motor has 10 seasons on it.
Cylinder pressure is cylinder pressure, if your cramming air with a hair dryer or a bottle, both die violently when lean.

Working on a motec EMS turbo kit with anti lag, bit without anti lag system I just struggle in the trees with turbo power.

 

[tntm7]

Lmao, Ya, my 05 m7 is stock down to original plugs.
My last quad put down 614rwhp have new one coming that is zx14 based and over 900hp, that should be stupid fun.

 

[DWHalverson]

So what is the mower putting out for power?

 

[Mcx Nytro]

Been there, done that. My 900 BB with Nitrous is not even close to power output as with the turbo. Maybe at sea level they would be close, but in the hills there is no comparison.

I beg to differ on that. My buddy runs an 05rx1 with an mcx turbo12 lbs boost.he runs a 151 camo and I had a 156 extreme I ran the viper 835 BB on noz. Even WITHOUT the noz I could beat him to 90mph With the noz right off the start He would be about 8 lengths behind. We raced on Morton Lake in Sicamous...only on long long pulls could he get me but it was right near the end of the lake or top in monster bowl in turtle,His sled was set-up by one of the best in the industry Harvey Kroker out of Squamish

 

[gus bohne]

Ok, don't have any videos but a few troubles. Rave bellows were blowing off, used tie wire and seem to be OK. Jetting for the bottom and mid-range is not as easy as the top-end. I need to run different pilots and needle position at 2500' than at 6500'. And mine seems to use alot of fuel ( could be because it is too fat on the bottom and mid). Have to run a oil system that is kind of a pain, and could leave you stranded if the pump gave out.

I'm only running 10 lbs on this sled and it seems to work great. ( Mitsibushi on a Crankshop 900)

I have a 66 aero kit coming from Turboboyz for my XP and can't wait!

You honestly have to ride one and you will want one

Yes todd,,
The issues you are running into are all carb related.
The kit is incomplete as far as carb set up for pressurization goes.

I suggest you get at least a 2.0 aircorrection jet into them or take the oem one out and then determine the pilot jet needed.
As for just going to a smaller pilot ????? its so small now its telling you I"M NOT the problem !!

One other issue is the flaots in the oem flatslides.
They should be lowered but the only way to do it is to HEAT the plastic float lever and bend it...POOR to say the least...

You should try the Cat 900 high elevation needles too..

The real solution is to swap out the carbs to the OEM ski doo snocross carbs, They have all the stuff you need in them already, are very cheap to buy and will tolerate huge fuel volumes without even a burble..


for those I recommend,, 25 pilots, p4 needle jets, 270 mains power jet 1-2 turns out,, air screw at 1 turn.
lower the floats 1 mm from stock and enjoy..

800 versions came with 2.0 needle seats.
600 version come with 1.5s'
neeldes are the same

needle seats are oem mikuni rs type.

 

[Todd H]

I beg to differ on that. My buddy runs an 05rx1 with an mcx turbo12 lbs boost.he runs a 151 camo and I had a 156 extreme I ran the viper 835 BB on noz. Even WITHOUT the noz I could beat him to 90mph With the noz right off the start He would be about 8 lengths behind. We raced on Morton Lake in Sicamous...only on long long pulls could he get me but it was right near the end of the lake or top in monster bowl in turtle,His sled was set-up by one of the best in the industry Harvey Kroker out of Squamish

Just amagine if you had a turbo on your 835....All I'm saying that on the same motor, in the same sled the turbo will make way more power, especially at elevation if tuned properly. I'm sure that the RX 1ton weighs a pile more, and if it is a rear mount would have a ton of turbo lag.

I'm a 2 stroke guy, glad you handed it to him