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Discussion Starter · #1 ·
I know a lot of you have the coan converter upgrade. My question is which one is most popular and what is the stall speed. The converter on my 05 350/385 is going south. thought I might as well upgrade while I`m at it. I really don`t want the stall too high, but want to see my power band come on a little stronger at slow speed roll on.
Thanks.
 

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Hey Tom,

Isn't that a new bike? How many miles on the Dacrap converter?

I know you like doing the smoke don't you? Do a higher stall converter. All that BS about it significantly effecting temps is just that...BS. I was real happy with the Coans on the bigblock. I had the prototype and then one they build ground up when I sold Big Red.

We've tried everything to gag that little single speed in our smallblock choppers and they're holding up great. Went to a race 530 EK chain they use on some of the Top Fuel bikes and a pretty good nitrous shot and to date, no problems whatsoever. Regards,

Elliot
 

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Tom....I have a ground up Coan. I think the stall speed is 2500 RPM but not sure. Much more positive feel and burnouts are done at will. Recommend it...Joe
 

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Discussion Starter · #5 ·
Thanks guys.
Yes... it is a new bike but it has had a noise from day one. Now, at 1600 miles I have a leak at the front seal and the noise is getting worse. When I talked to the factory they said they are setting the converters up a little tighter this year and the noise was normal. Guess mine was a little too tight. But.. what ever... I`ll get my converter upgraded for just the cost of the part.
I talked to Jim Calloway yesterday and he said the coan converter was only marginally different from nesco`s #7 and then only at around 1000 to 1500 rpm on the dyno. Any thoughts there?
Elliot.... Sounds like you have the bugs worked out of that machine of yours. Should be rock solid now. I know I rode the crap out of my kannon and the trans was bullet proof after many long hard miles. Was faster too. Still..... the ride compared to the boss was no comparison and that was really what I was after. So for me..... this new boss is the cats meow. tranny problems and all... I love it!
 

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Tom,

I have about 4000 miles on my #7 Nesco and it performed flawlessly this summer :lol: We run temp senders in the pans and the temps are the same as the stock setups from the factory. Fair amount of burnouts, including with the flat tire, and this converter makes the bike feel like it has an extra 50 to 60 hp..........I have checked mine and it is set up at about 3400 rpm.

We constantly ride in 2nd gear (OD) above 35 mph and have had no issues with either mine or Wags 8)

Tim
 

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Tom....would you expect Nesco to say anything different? Do you think they are going to say, "Oh, the Coan is much better?"
The Coan has nickel furnaced brazed fins, 3 sets of bearings, anti-balloon plate and the Coan well known racing impramatur. The Nesco is basically a very inexpensive GM unit (Dacco) used in small front wheel drive cars. The guys with the #7 unit seem to love it, however, I just wanted the peace of mind from a well known race converter company but the cost is about double that of the Nesco. From what the guys say here and on the other sites, the newer Nesco seems to be just fine. Your choice....Joe.
PS. You can talik to Craig at Coan who is very friendly. Phone # 765-456-3957 before making a decision.
 

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Discussion Starter · #8 ·
Tim and Joe...
Thanks a bunch!! That is exactly the information I was looking for. I will do a little more homework before making a decision now that I am a little better informed.
Again, thanks guys.
 

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Tom...by the way, telling you your converter makes noise because it is set up "tighter" is BULL****, especially if you hear it is getting worse. Your converter should be dead quiet. If it's making noise, either there is some contact between the fins of the stator and rotor or your bearings are wearing. The Coan also has a billet stator which I forgot to mention in my previous post. Think about it! This is what I mean about the quality issue. My Coan is dead quiet, positive and bullet-proof.
Joe
 

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I'm thinking about a new converter, too. I'm tending to the Coan brand. Joe, do they (Coan) have the converters in different stall speeds in stock...like 2500, 2800, 3500RPM? Or do I have to give them my vehicle specs, and they make one just for me...? If so - how long do they need to make a BH converter? Or if they have some in stock for the BH - what choice of stall speed do they offer? And what excactly is an anti balloon plate?

Thanks,
Loaf
 

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Discussion Starter · #11 ·
Joe...
That was my thought too.
 

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Loaf...My understanding of the anti-balloon plate is thatunder very heavy loads the pressure in the converter can be such that the rotor can actually expand and "balloon" out and trash the unit. That's the limit of my knowledge but I'm sure Neil, Geezer or someone else here will be able to give a more technical explanation...Joe
 

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I run the $250 Nesco 3500 rpm stall and have converted about 6 of my buddies to it and we all love it. I would say for the money you can't go wrong. This thing makes your bike run like you would think a 355 hp bike should run. Burnouts at will and no heat issues even in overdrive. I have not been nice to this tranny/converter and so far it has held up great.

By the way you will spank a boss with a stock converter and be burning the tire as your spanking them. ;)
 

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LaMonsterV8 said:
I run the $250 Nesco 3500 rpm stall and have converted about 6 of my buddies to it and we all love it. I would say for the money you can't go wrong. This thing makes your bike run like you would think a 355 hp bike should run. Burnouts at will and no heat issues even in overdrive. I have not been nice to this tranny/converter and so far it has held up great.
By the way you will spank a boss with a stock converter and be burning the tire as your spanking them. ;)
Lamont,
after reading at the V8CG board that the Coan converter probably doesn't fit for my 99 Boss, after reading your and Tim's postings, after comparing the prices, and the fact that I can pick up #7 at the factory direct in april/may 2005 while our next US vacation, I just decided to give #7 a chance.

Thanks a lot,
Loaf
 
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