Wash
Get the Evans pump and "R" coolant. Do NOT use the Meziere electric pump...it cost me a shortblock rebuild to find out. 
Darton sleeve questions
Melting Slicks
Joined: Apr 2001
Posts: 3,034
Likes: 125
From: NY-South Florida
Re: Darton sleeve questions (Heretic)
I have done a few Darton motors and the Evans coolant is highly recommended. It has a great ability to remove heat from around the cylinder.
Dexcool can still be used however.
Make sure if you use the Evans coolant that you don't let the car be exposed to freezing temps. I don't think the Evans coolant can be used in the winter months!
Dexcool can still be used however.
Make sure if you use the Evans coolant that you don't let the car be exposed to freezing temps. I don't think the Evans coolant can be used in the winter months!
Melting Slicks
Joined: Sep 2003
Posts: 2,458
Likes: 105
From: Northville Michigan
Re: Darton sleeve questions (Heretic)
Fritz,
Evans NPG+ coolant is the best choice for all Darton applications, and for any C5 owner who doesn't want to go throug an antifreeze change every two years. It has the ability to eliminate the hot spots in the cylinder heads and in the cylinder block that standard coolants can't.
It is good down to a - 45 degrees F. Don't worry about it in the winter.
As you can see by my signature, I have it in my Z06.
Good luck with your decision.
Evans NPG+ coolant is the best choice for all Darton applications, and for any C5 owner who doesn't want to go throug an antifreeze change every two years. It has the ability to eliminate the hot spots in the cylinder heads and in the cylinder block that standard coolants can't.
It is good down to a - 45 degrees F. Don't worry about it in the winter.
As you can see by my signature, I have it in my Z06.
Good luck with your decision.
Safety Car
Joined: Nov 2003
Posts: 4,979
Likes: 5
From: San Diego, CA "leaf" "tee" "e"
Re: Darton sleeve questions (JamMasterJ)
There's a long 7 page thread on this over at ls1tech.com.
Basically the stock water pump isn't strong enough to effectively cool one of the rear cylinders. Even the Evans pump may have problems keeping the coolant moving in all areas, so to prevent the coolant from boiling in those areas, you run the Evans coolant as well.
If you're thinking about getting Darton sleeves, here's what was recommended in that thread:
1. Order of preference for engine blocks: '98 LS1, used LS1/LS6 block, new stress relieved(vibration or cryo) LS6 block -- no previously resleeved blocks
2. Get the wet sleeves
3. Use the high flow Evans pump, and get it ceramic coated -- do not use the stock pump, and especially do NOT use the Meziere
4. Use the Evans coolant - good for up to 300 degrees fahrenheit and never needs to get replaced, and is environmentally friendly
5. Use the better outlet-side flowing Evans thermostat
6. The sleeves must be installed on a CNC machine...hand controlled units are not precise enough
Basically the stock water pump isn't strong enough to effectively cool one of the rear cylinders. Even the Evans pump may have problems keeping the coolant moving in all areas, so to prevent the coolant from boiling in those areas, you run the Evans coolant as well.
If you're thinking about getting Darton sleeves, here's what was recommended in that thread:
1. Order of preference for engine blocks: '98 LS1, used LS1/LS6 block, new stress relieved(vibration or cryo) LS6 block -- no previously resleeved blocks
2. Get the wet sleeves
3. Use the high flow Evans pump, and get it ceramic coated -- do not use the stock pump, and especially do NOT use the Meziere
4. Use the Evans coolant - good for up to 300 degrees fahrenheit and never needs to get replaced, and is environmentally friendly
5. Use the better outlet-side flowing Evans thermostat
6. The sleeves must be installed on a CNC machine...hand controlled units are not precise enough
Safety Car
Joined: Nov 2003
Posts: 4,979
Likes: 5
From: San Diego, CA "leaf" "tee" "e"
Re: Darton sleeve questions (washguy)
Left that part out intentionally so as not to step on the toes of any of our supporting vendors/tuners. I'm sure Darton would happily make some recommendations if they were contacted directly.
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Verdad Gallardo
NCM, WSCC &amp;amp; SCC Member
Joined: Oct 2002
Posts: 2,900
Likes: 1
Re: Darton sleeve questions (HIGHRPM)
Highrpm, why do you think that?
The new Darton blocks at Andy's shop looked even better than the C5R blocks in my opinion. Looked them over, side by side. Appeared to have more water jackets than the C5R. I think we can all agree several of the previous versions of the Darton failed at 1,000 lbs. torque on the juice. I have not seen one failure with the new one.
The reason I ask, is that I have a Meziere pump, but I also have a Ron Davis radiator/oil cooler, and and carbon fiber C5R hood. We can decide whatever operating temp. we want to run at in any conditions. That being said, you also have a monster of a blower on your car, which I do not.
In any case, just curious.
The new Darton blocks at Andy's shop looked even better than the C5R blocks in my opinion. Looked them over, side by side. Appeared to have more water jackets than the C5R. I think we can all agree several of the previous versions of the Darton failed at 1,000 lbs. torque on the juice. I have not seen one failure with the new one.
The reason I ask, is that I have a Meziere pump, but I also have a Ron Davis radiator/oil cooler, and and carbon fiber C5R hood. We can decide whatever operating temp. we want to run at in any conditions. That being said, you also have a monster of a blower on your car, which I do not.
In any case, just curious.
Safety Car
Joined: Nov 2003
Posts: 4,979
Likes: 5
From: San Diego, CA "leaf" "tee" "e"
Re: Darton sleeve questions (#001 2001 Z06)
The Mezeire is barely good enough for a stock 350 hp engine, let alone a big horsepower engine. The Mezeire just doesn't have enough push to flow move the coolant at the rear of the engine, and having the big radiator will do little to nothing to stop hotspots around the 7/8 cylinders when the coolant around there can't move to the radiator.
The Mezeire might be great for dedicated drag cars where there is plenty of time to cool down, but it's a time bomb for street cars, and especially for track cars.
The Mezeire might be great for dedicated drag cars where there is plenty of time to cool down, but it's a time bomb for street cars, and especially for track cars.
NCM, WSCC &amp;amp; SCC Member
Joined: Oct 2002
Posts: 2,900
Likes: 1
Re: Darton sleeve questions (leaftye)
I thought that water pump flowed much more volume? Can others chime in or provide any R&D. Again, we have not had any problems at idle or a load with that pump, but still again, I am not running a blower at 14 psi on bored out small block where engineering problems are exponential in nature. Is it possible that there were other problems and/or the pump was hooked improperlty or maybe they modified the pump since then. I may have an idiot warning light hooked up in any case. One those ones that blinds you.
http://www.ls1howto.com/ http://www.projecttransam.com/projects9.asp
Reviews seem good. Two year warranty.
[Modified by #001 2001 Z06, 3:54 PM 7/6/2004]
[Modified by #001 2001 Z06, 4:26 PM 7/6/2004]
http://www.ls1howto.com/ http://www.projecttransam.com/projects9.asp
Reviews seem good. Two year warranty.
[Modified by #001 2001 Z06, 3:54 PM 7/6/2004]
[Modified by #001 2001 Z06, 4:26 PM 7/6/2004]
