M8 turbo

[Mcx Nytro]

The funny thing is that I have seen so many BD sleds geting towed out. Funny thing is that I have never seen a Twisted one yet. Yes this just in Boondocker kits suck.

were these M sleds or dragons??? I was going to go dragon with boost but all the problems scared me. Looking for an M8 or 1000 with boost

 

[ACMtnCat]

BD race gas kits running the full size intercoolers, with hoods installed, typically see 110° drop in charge air temps, pull after pull, even boondocking through the trees.

Say what you want, but that’s the facts.

Junior

What would make the BD RGas intercooler build so much heat all the time? I can dry my gloves and goggles using Hatchers intercooler standing five feet from his sled.

 

[Dano702]

The facts are the facts. BD control boxes come with temp sensors these days, so anyone running a BD turbo can see what their charge air temps are, so no more kidding around…

BD pump gas turbos do not come with intercoolers, only because they are intended to be run a low boost pressures. At these low pressures (8psi and lower) charge air heat is not as prevalent as it can be at higher boost pressures (8psi and up). However BD does offer a mini intercooler kit for the pump gas turbo kits. This intercooler is half the size of the cooler that comes standard in the BD race gas kits. With no venting for fresh cool air the charge air temps drop 65°-75°, pull after pull, even boondocking through the trees.

BD race gas kits running the full size intercoolers, with hoods installed, typically see 110° drop in charge air temps, pull after pull, even boondocking through the trees.

Say what you want, but that’s the facts.

Junior

So can you tell me what the full size and mini intercooler weigh? And with the drop in charge temps , what can we get in horsepower ? Will a full size intercooler get me 2 hp ? 3hp? 5hp ? 20 hp?

I am just focused on HP per LB ratio's on the sleds . If you add weight you had better come up with alot of HP to pay for that weight . I would love to hear from a BD employee , why the intercooler is worth the weight.

 

[snoballssnoglory]

So can you tell me what the full size and mini intercooler weigh? And with the drop in charge temps , what can we get in horsepower ? Will a full size intercooler get me 2 hp ? 3hp? 5hp ? 20 hp?

I am just focused on HP per LB ratio's on the sleds . If you add weight you had better come up with alot of HP to pay for that weight . I would love to hear from a BD employee , why the intercooler is worth the weight.

Right on!!! Exactly the question I had. If you add weight to a sled be it 1 lb or 20lbs you better justify w/ specific HP #s or you are just like the rest of us.......... Shootin in the dark.

 

[snoballssnoglory]

Good thing that's what 99.9% of guys running turbos do

I think you better do a little research before you throw out a number like 99.9%... There are a lot of dudes (I won't say 99.9% b/c just like you I don't have a clue what the percentages are) are looking for more power in the trees as well as the hills. Look at the incline boondocking that has become so popular w/ the PG Kits. Seriously??? 99.9%... Seriously????
Stuff IT

 

[ridgelinerunner]

Someone is always going to have a faster sled! The Boondocker pumpgas turbos run pretty good. Haven't seen a cutlers run though, Dale always has pretty good stuff! Twisted has some good products also, just comes down to cost and power. What ever you choose, when you spool it up will put a smile on your face!!

 

[product tester]

ridgeline you are spot on. Im not trying to do anything but post personall experiance. Junior If they work for you then great , The way I ride I did not like the intercooler (air to air). there will be a few more options soon.

 

[savedbygrace]

What would make the BD RGas intercooler build so much heat all the time? I can dry my gloves and goggles using Hatchers intercooler standing five feet from his sled.

The intercooler will be warm because it is dissipating charge air heat, that is how it works. Just the same as the radiator in your truck gets hot when it’s cooling the engine.

 

[savedbygrace]

So can you tell me what the full size and mini intercooler weigh? And with the drop in charge temps , what can we get in horsepower ? Will a full size intercooler get me 2 hp ? 3hp? 5hp ? 20 hp?

I am just focused on HP per LB ratio's on the sleds . If you add weight you had better come up with alot of HP to pay for that weight . I would love to hear from a BD employee , why the intercooler is worth the weight.

Here it goes; as an example we’ll use an 800cc engine, running 8200 RPM, at 8000 ft elevation, and 32° ambient air temp

If we take our test subject and boost it 8 psi, with a reasonable turbo compressor efficiency of 72%, our compressor temp rise would be 116 ° added that to our ambient air temp of 32°, we would have a charge air temp of 148° and make approximately 194.7 HP.

Now if we were to add an intercooler that is 60% effective, our charge air temp would drop 70° leaving us with a charge air temp of 78° and make approximately 220.1 HP, a 13% HP gain.

Let’s take our test sled and bump it up to 15 psi. If we use the same compressor efficiency of 72% our compressor temp rise would be 185° added to our ambient air temp of 32°, we would have a charge air temp of 217° and make approximately 239.6 HP.
Note; at this kind of charge air temp you would most like experience detonation, which could possibly be suppressed by adding extra fuel, but would also result in a loss of HP and fuel economy.

Now if we were to add an intercooler that is 60% effective, our charge air temps would drop 111° leaving us with a charge air temp of 106° and make approximately 286.6 HP, a 20% HP gain, and no detonation.

The mini intercooler for the BD pump gas turbos weighs about 4.5 lb. and the larger race gas intercooler weighs about 9 lb. The way I see it if you building charge air temps in the 200 plus range the weight of the extra fuel you’ll carry so you can wash down detonation, will alone justify the weight of an intercooler. Not to mention the added HP and dependability, pistons ain’t cheep these days.

Junior

 

[harf69]

turbo

I dont have alot of experience with turbos i dont own one but I have had my leg over a few and I have to say im really impressed with this kit.The water cooled intercooler is sweet and I heard that he is going to be working on possibly doing some cat kits check out the link
http://www.hmturbos.com/page17/page17.html

 

[SNOW JW]

Going to throw my 2cents in on the intercooler thing.

Adds about 3lbs on my Dragon after I take my stock turbo airbox off. I watch my charge temps all the time with my BD box and have ran side by side with Krafty Mike and others. For low boost I don't see it helping to much.

Now crank up the boost 10lbs+ and it helps allot on average I am running 170deg charge temps on a long pull and pull after pull it never changes more than 10-20 Deg at most in 50deg outside air temp. I do run large side pannel vents and when my sled is running I can feel the fan moving the hot air out from them. I think the key is the fan and good side vents or hood vents you are pushing these sleds.

Non intercooler running 7-8lbs is averaging 230-240 deg charge temps I don't see much of a change till I start cranking up the boost after about 9-10psi I just don't feel the sled pulling like the intercooler put them side by side and then you can really see it.

I don't think the intercooler is for everyone but it does work and again I am just going by what I am seeing on the hill.

As far as who's kit is better that is like beating a dead horse on a forum page they all work just do your homework allot of guys on forums benefit from talking up another kit friends with a certain turbo company, rivalries ect ect.Technology has came a long ways from the first turbo kits from the new electronic stuff on the market today it really makes these kits so much more user friendly.

 

[ondast]

hello

I am thinking of switching from my turbo nytro to a M8/CF8 until next year. and as they say, once you had turbo, you never go back. So, what kit should I buy? The only dealer we have in Sweden sells boondocker but I am looking at cpc's PG kit. I drive mostly in the area around 2000-4000 feet, and most boondocking. What im looking for is the most reliable kit, so close I can get to a "turn key" sled. I don't need more then 210-220 hp. What do you guys think?

 

[ondast]

Info PLS.

 

[TNytro]

ondast!
Keep the Nytro Turbo! =)

 

[ondast]

hello

I am thinking of switching from my turbo nytro to a M8/CF8 until next year. and as they say, once you had turbo, you never go back. So, what kit should I buy? The only dealer we have in Sweden sells boondocker but I am looking at cpc's PG kit. I drive mostly in the area around 2000-4000 feet, and most boondocking. What im looking for is the most reliable kit, so close I can get to a "turn key" sled. I don't need more then 210-220 hp. What do you guys think?

Some input pls! Can you run a mini IC on the cpc kit?

 

[backcountryislife]

Some input pls! Can you run a mini IC on the cpc kit?

I recently bought a cpc turbo in some part due to feedback on here, running against bd turbo dragons recently there was no comparison, the cpc M8 destroyed them (12lbs on both sleds). The attitude box is one of the biggest reasons to go with Cutler to me, the tuning on this sled has been VERY smooth & extremely simple. A/f numbers are clean all through the range & the thing runs like a stock sled (well, aside from that extra 100+hp that is)

I'm sure there are tons of bd guys that are pull & go, I just haven't seen that here where I ride, I've seen fuel issues, issues with electronics, and a couplke guys burning down, and this is ONLY the 09 generation turbos I'm talking about. It seems to me that everyone with a twisted or a cutler is happy, I'm definately one of them.

 

[ondast]

Thanks!

That was good feedback, everything I have read about PG kits to the M8 is pointing me to the cpc kit. feels more solid... I have a friend who race dragsleds and he says that cuttler always put out really good stuff.

Is it possible to go with a IC on the cpc kit? is it included? Think I will need one on my sled with a fan mounted.. Do I need to lower the compression?

/Tobbe

 

[skibreeze]

I recently bought a cpc turbo in some part due to feedback on here, running against bd turbo dragons recently there was no comparison, the cpc M8 destroyed them (12lbs on both sleds). The attitude box is one of the biggest reasons to go with Cutler to me, the tuning on this sled has been VERY smooth & extremely simple. A/f numbers are clean all through the range & the thing runs like a stock sled (well, aside from that extra 100+hp that is)

I'm sure there are tons of bd guys that are pull & go, I just haven't seen that here where I ride, I've seen fuel issues, issues with electronics, and a couplke guys burning down, and this is ONLY the 09 generation turbos I'm talking about. It seems to me that everyone with a twisted or a cutler is happy, I'm definately one of them.

Caleb, if you are talking about the spring fling, you are way off base. Shawn's 700 wasn't running 12 lbs. and I was only running 7lbs, so you are right, there was no comparison.

 

[backcountryislife]

Caleb, if you are talking about the spring fling, you are way off base. Shawn's 700 wasn't running 12 lbs. and I was only running 7lbs, so you are right, there was no comparison.

I forgot he was a 700, but I'm positive he said he was running the same psi as hers, that was why I wanted to turn it up, for a fair comparison. (but yeah, I would think 700T to 800T isn't all that fair)

 

[skibreeze]

There is no doubt that the M8T hauls azz, and I would get one if I hadn't gotten the bugs worked out of mine. Maybe we can get Tom to boost his over the summer. Fat chance, but it would be fun.