KB Liquid Cooled vs Non LC

[fiveoh]

I was looking at the 2.8 KB kits for the 5.0. Is there a huge difference between the LC and non LC? I'm guessing the non LC get hotter?

 

[automatt]

I have a roush and on those hot days at the track or even driving around the blower gets pretty damn hot and performance suffers. And mine in cooled. I can't imagine how bad it would be if it was as just left to heat up with nothing helping it cool down. I wouldn't waste the money on non cooled. Imo

 

[dysan]

I have a roush and on those hot days at the track or even driving around the blower gets pretty damn hot and performance suffers. And mine in cooled. I can't imagine how bad it would be if it was as just left to heat up with nothing helping it cool down. I wouldn't waste the money on non cooled. Imo

I don't know if you realize but the liquid cooling on the KB's is actually additional liquid cooling to the case of the blower, not just the water cooling for the air charge via the intercooler and heat exchanger.

 

[automatt]

I did not lol woops. I just assumed he was talking about non intercooled vs intercooled.

 

[Brezick]

KB's are heat monsters. get the LC if you can.

 

[19COBRA93]

The LC doesn't cool the blower case, it only cools the gear case at the front of the blower. Regardless, it's a good thing. If I were to buy a KB, it would have to be the LC.

 

[dysan]

The LC doesn't cool the blower case, it only cools the gear case at the front of the blower. Regardless, it's a good thing. If I were to buy a KB, it would have to be the LC.

Ahh...my bad. I only knew it was additional cooling other than the air charge temps.

 

[Timmbo]

Go with the LC version IMO. I installed my 2.8L Mammoth over the winter and love it.

 

[fiveoh]

Thanks for the info. I guess the non LC is out of the running.

 

[hamish]

Find some real world results first before you drop the standard style.

 

[blownGTvert]

As stated above the LC version does little, if anything for IATs. The LC version will extend bearing and seal life. Otherwise there isn't any difference in performance. That being said, get the LC version for the $300 option.

 

[Deleted member 162826]

I would say LC. Yeah the coolant is only running through the front portion of the case but it's connected the the main part. I don't see how that wouldn't pull some heat out of the case since thermal energy transfers good in metal. Its probably not going to make any difference in AIT but as far has heat soak I'm sure it helps.

 

[BruceH]

Do yourself a favor and research KB and intake temps before committing. It's a lot of money to spend on something you don't know about.

 

[Unreal]

Or just buy a whipple/tvs and get a better blower...

 

[dysan]

Or just buy a whipple/tvs and get a better blower...

Agreed! If you want a screw type blower I vote for the VMP Roush TVS. I may actually switch from my Edelbrock to the Roush if I have the money next winter just for the lower IAT temps.

 

[Eel Mit]

Or just buy a whipple/tvs and get a better blower...

Positive displacement hierarchy:

TVS (not a twin screw) < Whipple (cast case twin screw = looser tolerances between case and rotors due to disimilar metals = higher iats than KB) < KB LC blowers (both case and rotors are machined from same alloys)

KB LC blowers use a different rotor pack than non-LC blowers. Liquid cooling the snout allows rotor / case tolerances that Whipple can only dream about. The rear of these blowers is cooled by the air flow through them. The front (without the cooling option) gets heated up due to the gears spinning at 15,000+ rpm in a cup of oil. To counteract the expansion of the rotors and case, they add more clearance between them, this leads to turbulence and more intake air heat...and less efficiency.

 

[Timmbo]

Positive displacement hierarchy:

< Whipple (cast case twin screw = looser tolerances between case and rotors due to disimilar metals = higher iats than KB) < KB LC blowers (both case and rotors are machined from same alloys)

OH - MY - GOD!! You've done it now! Call the local hospitals up in Michigan folks and check to see if Jason has been admitted for a stroke after reading this!

 

[19COBRA93]

Positive displacement hierarchy:

TVS (not a twin screw) < Whipple (cast case twin screw = looser tolerances between case and rotors due to disimilar metals = higher iats than KB) < KB LC blowers (both case and rotors are machined from same alloys)

KB LC blowers use a different rotor pack than non-LC blowers. Liquid cooling the snout allows rotor / case tolerances that Whipple can only dream about. The rear of these blowers is cooled by the air flow through them. The front (without the cooling option) gets heated up due to the gears spinning at 15,000+ rpm in a cup of oil. To counteract the expansion of the rotors and case, they add more clearance between them, this leads to turbulence and more intake air heat...and less efficiency.

Sure sounds good on paper. Too bad in the real world it doesn't quite work out that way. KB's IAT's are considerably hotter than a comparable Whipple. All day long.

 

[Brezick]

Sure sounds good on paper. Too bad in the real world it doesn't quite work out that way. KB's IAT's are considerably hotter than a comparable Whipple. All day long.

This. Numerous threads about KB heat, but very few about Whipple. I have been fighting IAT's ever since i bought the blower.

 

[flyfaster1]

OH - MY - GOD!! You've done it now! Call the local hospitals up in Michigan folks and check to see if Jason has been admitted for a stroke after reading this!

I was waiting for the same thing