Cooling Question

[cnavarro]

Personally, I think the money is better spent using a 36-horse shroud like what Jake used in his shroud comparison tests (which outperformed all other shrouds). When paired with a set of Nickies, this combo would most definately go a long way to dissipating the heat put into the engine and generated by the engine. To keep the cost down, one could always use pistons from a cima/mahle p/c kit- we've found this works great when paired with our cylinders.

Charles Navarro
LN Engineering
http://www.LNengineering.com
Aircooled Precision Performance

[blue4400]

Originally Posted by cnavarro

Personally, I think the money is better spent using a 36-horse shroud like what Jake used in his shroud comparison tests (which outperformed all other shrouds). When paired with a set of Nickies, this combo would most definately go a long way to dissipating the heat put into the engine and generated by the engine. To keep the cost down, one could always use pistons from a cima/mahle p/c kit- we've found this works great when paired with our cylinders.

Charles Navarro
LN Engineering
http://www.LNengineering.com
Aircooled Precision Performance

1.What is the average price of the cylinders?
2.Just in case you know. How good are mahle pistons, how much power do you think they can hold?

[cnavarro]

With a set of mahle pistons, ARP Head Studs, and our Nickies cylinders, ~$2200 (May special) 94a/b. How much boost would be a question to ask for those on here who have used the cast pistons; our thickwalled 90.5s would be good to 25 psi and thickwalled 92s to 15psi. We don't recommend using our 94s for boost, due to thin walls. Also, all of our current turbo customers have opted for forged JE pistons, which bring the kit cost up to $2700. This price includes one off, custom designed pistons, to your desired specs. For example, one customer needed 20ccs in the pistons to dial in their compression ratio to 8.0:1, which saved him from having to semi-hemi his heads for the extra ccs. Again, figuring in the savings from ditching the 911 system paired with the added longevity a set of Nickies provides makes for great combo.

Charles Navarro
LN Engineering
http://www.LNengineering.com
Aircooled Precision Performance

[blue4400]

Thanks cnavarro for you help.

[bobgsinsung]

Like the sound of the 'nickies', seem invaluble in terms of reliability. One question though, do they benefit from thermal transfer coatings on the fins?

[cnavarro]

Thermal coatings improvement of cooling capacity of a Nickies cylinder is questionable, since we already acid etch all surfaces to maximize surface area. A coating would impede and more than likely reduce surface area. Cyro'ing is also questionable, since our aluminum is cold worked to a T9 spec through the extrusion process, pressed through a die at nearly 20 tons of force.

Charles Navarro
LN Engineering
http://www.LNengineering.com
Aircooled Precision Performance