dirk_03
Expert
Just picked up "cousin vinnys" old sled from "powder nomad". am not new to boost have had a couple boosted 2 strokes. But am new to the boosted 4 stroke. And I have a few questions.
#1. What is the max boost anyone is running on a stock vector motor(no head shim)? And what altitude? And Fuel?
#2 I want to ride the sled in MN once in a while. Would it have to be rejetted? Or can I just turn down the boost? I see alot of guys saying that they ride there sleds in huge elevation changes with out any changes. So this is a question I have. Obviously the 4 stroke is not nearly as picky at the 2 stroke turbos.
#3 Does anyone have a vector turbo kit install instructions. Would like to have a detailed set. I think it would help me get up to speed on the yamaha's.
#4. Is anyone running a stock motor with just cam timing(no head shim)?
#5 What is the the most anyone is seeing for a temp drop across the intercooler?
#6 Has anyone checked to see how much difference a cold air snorkle makes in the intake temps past the turbo. For example. It the under hood temp is 60 degrees and you move your intake from under then hood to out of the hood to say where it is getting 40 degree colder air. Does that account for a 40 degree drop in charge temps after the turbo?
Sorry for all the questions. Just really want to get up to speed on the yamaha turbos. Hopefully some of these questions can be answered. I think the custom made turbo kit on the sled I bought is well built But I think there may be room for more improvement with slight changes. I think If some of the questions above are answered I will be able to make an educated decsiion. Thanks
#1. What is the max boost anyone is running on a stock vector motor(no head shim)? And what altitude? And Fuel?
#2 I want to ride the sled in MN once in a while. Would it have to be rejetted? Or can I just turn down the boost? I see alot of guys saying that they ride there sleds in huge elevation changes with out any changes. So this is a question I have. Obviously the 4 stroke is not nearly as picky at the 2 stroke turbos.
#3 Does anyone have a vector turbo kit install instructions. Would like to have a detailed set. I think it would help me get up to speed on the yamaha's.
#4. Is anyone running a stock motor with just cam timing(no head shim)?
#5 What is the the most anyone is seeing for a temp drop across the intercooler?
#6 Has anyone checked to see how much difference a cold air snorkle makes in the intake temps past the turbo. For example. It the under hood temp is 60 degrees and you move your intake from under then hood to out of the hood to say where it is getting 40 degree colder air. Does that account for a 40 degree drop in charge temps after the turbo?
Sorry for all the questions. Just really want to get up to speed on the yamaha turbos. Hopefully some of these questions can be answered. I think the custom made turbo kit on the sled I bought is well built But I think there may be room for more improvement with slight changes. I think If some of the questions above are answered I will be able to make an educated decsiion. Thanks
kinger
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I saw that sled it was a steal for what he was asking.
#1 At the top of this forum is a sticky for the boost octane spreadsheet its a great baseline and pretty darn accurate. I would say 7 psi on a stock engine is pushing it on 91 gas.
#2 It depends what is it jetted for now? I rode my stock carbed RX1 at sea level and then when to 6000 ft and it was sliggish from normal but otherwise ran fine I made no clutch or jet changes.
#3 Probably wont do you any good since its a custom kit. If your familar with turbos you fine.
#4 Not heard of this usually when in there they shim it
#5 Not sure, search author "Hammer" on this site he may be the only one to have done these tests.
#6 Not sure but I dont think temps matter and most snorkles are used to keep the filters from being clogged with powder.
This site will get you the info you need, congrates on the purchase!
#1 At the top of this forum is a sticky for the boost octane spreadsheet its a great baseline and pretty darn accurate. I would say 7 psi on a stock engine is pushing it on 91 gas.
#2 It depends what is it jetted for now? I rode my stock carbed RX1 at sea level and then when to 6000 ft and it was sliggish from normal but otherwise ran fine I made no clutch or jet changes.
#3 Probably wont do you any good since its a custom kit. If your familar with turbos you fine.
#4 Not heard of this usually when in there they shim it
#5 Not sure, search author "Hammer" on this site he may be the only one to have done these tests.
#6 Not sure but I dont think temps matter and most snorkles are used to keep the filters from being clogged with powder.
This site will get you the info you need, congrates on the purchase!
dirk_03
Expert
Anyone else
I can't beleive that there is noone else out there with some info for me? Or is this forum not visited very often in the summer. Thanks Kinger for your info. Can anyone else give more info on things he didnt know about.
thanks
I can't beleive that there is noone else out there with some info for me? Or is this forum not visited very often in the summer. Thanks Kinger for your info. Can anyone else give more info on things he didnt know about.
thanks
Swiss Sledder
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Quiet summer. There are some very knowledgeable people on the site that can answer your questions but I suspect they might be enjoying their summer right now.
rxrider
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First ting first... please add your location to your userprofile, it's easier to help when we know where you are, and it's a site requirement to fill in location, would you mind? 
What turbo kit are you looking for.... just any kit, front or rear mount?
OK - I'll give it a shot - I have no first hand info on the Vector Turboed, noone around here runs one with a turbo, everyone gets a RX-1 or Apex then goes turbo.... anyway
#1. What is the max boost anyone is running on a stock vector motor(no head shim)? And what altitude? And Fuel?
RE - I would agree with kinger, 7 lbs or 91 US octane, 10 on 93 octane, this would be sealevel (the ocean) 0 ft altitude and up.
#2 I want to ride the sled in MN once in a while. Would it have to be rejetted? Or can I just turn down the boost? I see alot of guys saying that they ride there sleds in huge elevation changes with out any changes. So this is a question I have. Obviously the 4 stroke is not nearly as picky at the 2 stroke turbos.
RE - Depends on the altitude change. I ride my turboed RX-1 from 0 ft to 3300 ft, honestly I can hardly notice any change in power going up in altitude, that's the beauti of running a turbo, it just spins faster to maintain boost when going up in altitude.
#3 Does anyone have a vector turbo kit install instructions. Would like to have a detailed set. I think it would help me get up to speed on the yamaha's.
RE - Sorry I do not have one, haven't seen one either. Any particular kit you're thinking about, or would instructions for any kit do?
#4. Is anyone running a stock motor with just cam timing(no head shim)?
RE - No knowledge on the Vector, but on the Apex and RX-1 a lot of people are running stock engine compression with a cam timing change for best possible performance and power. Running stock CR is OK for low boost applications less than 10 lbs, any more boost on stock CR and you're looking at running good quality race fuel or add meth injection to keep your engine alive.
#5 What is the the most anyone is seeing for a temp drop across the intercooler?
RE - Sorry don't have any spesific data for a Vector turbo kit IC -
It depends on the design of the turbo system, but I would guess a substantial temp drop as a good IC will run cool to the touch most of the time. I have never had my stage 3 race IC even luke warm, it's always cool to the touch no matter how hard I ride my sled... but then again it depends a lot on the design of the turbo system where the IC is installed.
#6 Has anyone checked to see how much difference a cold air snorkle makes in the intake temps past the turbo. For example. It the under hood temp is 60 degrees and you move your intake from under then hood to out of the hood to say where it is getting 40 degree colder air. Does that account for a 40 degree drop in charge temps after the turbo?
RE - Sorry have no data, but I would assume a substantial temp drop sucking cold outside air compared to underhood air (depends on where the air filter is placed tho), sucking cold air will always be better than sucking warm air no matter what.
Please add more info on your turbo kit, add pics and info on all parts installed. Many of us would be able to give you advice and answere question you may have.
Like Swiss Sledder said it's still quiet in here but you will get any help you need, have patience the site usually pics up speed around and after HayDays, the official start of the snowmobile season.
Welcome to the site dirk_03
rxrider
What turbo kit are you looking for.... just any kit, front or rear mount?
OK - I'll give it a shot - I have no first hand info on the Vector Turboed, noone around here runs one with a turbo, everyone gets a RX-1 or Apex then goes turbo.... anyway
#1. What is the max boost anyone is running on a stock vector motor(no head shim)? And what altitude? And Fuel?
RE - I would agree with kinger, 7 lbs or 91 US octane, 10 on 93 octane, this would be sealevel (the ocean) 0 ft altitude and up.
#2 I want to ride the sled in MN once in a while. Would it have to be rejetted? Or can I just turn down the boost? I see alot of guys saying that they ride there sleds in huge elevation changes with out any changes. So this is a question I have. Obviously the 4 stroke is not nearly as picky at the 2 stroke turbos.
RE - Depends on the altitude change. I ride my turboed RX-1 from 0 ft to 3300 ft, honestly I can hardly notice any change in power going up in altitude, that's the beauti of running a turbo, it just spins faster to maintain boost when going up in altitude.
#3 Does anyone have a vector turbo kit install instructions. Would like to have a detailed set. I think it would help me get up to speed on the yamaha's.
RE - Sorry I do not have one, haven't seen one either. Any particular kit you're thinking about, or would instructions for any kit do?
#4. Is anyone running a stock motor with just cam timing(no head shim)?
RE - No knowledge on the Vector, but on the Apex and RX-1 a lot of people are running stock engine compression with a cam timing change for best possible performance and power. Running stock CR is OK for low boost applications less than 10 lbs, any more boost on stock CR and you're looking at running good quality race fuel or add meth injection to keep your engine alive.
#5 What is the the most anyone is seeing for a temp drop across the intercooler?
RE - Sorry don't have any spesific data for a Vector turbo kit IC -
It depends on the design of the turbo system, but I would guess a substantial temp drop as a good IC will run cool to the touch most of the time. I have never had my stage 3 race IC even luke warm, it's always cool to the touch no matter how hard I ride my sled... but then again it depends a lot on the design of the turbo system where the IC is installed.
#6 Has anyone checked to see how much difference a cold air snorkle makes in the intake temps past the turbo. For example. It the under hood temp is 60 degrees and you move your intake from under then hood to out of the hood to say where it is getting 40 degree colder air. Does that account for a 40 degree drop in charge temps after the turbo?
RE - Sorry have no data, but I would assume a substantial temp drop sucking cold outside air compared to underhood air (depends on where the air filter is placed tho), sucking cold air will always be better than sucking warm air no matter what.
Please add more info on your turbo kit, add pics and info on all parts installed. Many of us would be able to give you advice and answere question you may have.
Like Swiss Sledder said it's still quiet in here but you will get any help you need, have patience
the site usually pics up speed around and after HayDays, the official start of the snowmobile season.Welcome to the site dirk_03
rxrider
dirk_03
Expert
RxRider thanks for the info. I added my location to my profile.
As far instructions I would not mind even a copy of Rx1 instructions.
The turbo kit was custom built by "cousin Vinny" on here. It is a front mount with a gt25 turbo. Right now it has a custom snow to air IC that I am not sure is very effecient. And will not know until the snow flys. Or until I can talk to him about the design. I believe that he will know some about the cooling nature of the snow to air IC. AS he does have a internal temp sensor on the intake. I am hoping to find a air to air intercooler of go to a water to air intercooler on the sled. The main problem I see with the snow to air is that it seems as though It would defeat the purpose of a front mount. Having such a large area to boost and therefore causing lag.
Also right now planning to do a head shim. As I want the simplicty of filling up at the pump. Have also thought about running e85 as it is readily avaible in MN at the pump and when we ride in the mountains I can just haul it out and it doesn't cost a lot. But seeing as though there is not alot of info on this setup I am not sure on doing it. Also I don't forsee that the higher comsumption would be a problem either. And if I run into a place that I can't get e85 I would just back down the boost and be a little fat.
I have done alot of reading on this forum and know that there are alot of guys who are very knowledgable and I hope to become one and share my experiences as well. I am very interested in the e85 as my famring background makes it seem all that more appealing.
As far instructions I would not mind even a copy of Rx1 instructions.
The turbo kit was custom built by "cousin Vinny" on here. It is a front mount with a gt25 turbo. Right now it has a custom snow to air IC that I am not sure is very effecient. And will not know until the snow flys. Or until I can talk to him about the design. I believe that he will know some about the cooling nature of the snow to air IC. AS he does have a internal temp sensor on the intake. I am hoping to find a air to air intercooler of go to a water to air intercooler on the sled. The main problem I see with the snow to air is that it seems as though It would defeat the purpose of a front mount. Having such a large area to boost and therefore causing lag.
Also right now planning to do a head shim. As I want the simplicty of filling up at the pump. Have also thought about running e85 as it is readily avaible in MN at the pump and when we ride in the mountains I can just haul it out and it doesn't cost a lot. But seeing as though there is not alot of info on this setup I am not sure on doing it. Also I don't forsee that the higher comsumption would be a problem either. And if I run into a place that I can't get e85 I would just back down the boost and be a little fat.
I have done alot of reading on this forum and know that there are alot of guys who are very knowledgable and I hope to become one and share my experiences as well. I am very interested in the e85 as my famring background makes it seem all that more appealing.
dirk_03
Expert
not new to boost.
Here is a couple pictures of the sled I just bought and a couple pictures of my past projects.
Picture of the vector
Old Picture I found of the yamaha From before the guy put the snow to air intercooler and before it was finished.
Pictures of current setup
Ski doo 600 Sdi turbo. I built this last winter.
Here is a couple pictures of the sled I just bought and a couple pictures of my past projects.
Picture of the vector
Old Picture I found of the yamaha From before the guy put the snow to air intercooler and before it was finished.
Pictures of current setup
Ski doo 600 Sdi turbo. I built this last winter.
