Specs for 2009+ J37A cams (RL)?
12-18-2009, 07:29 AM
#1
Three Wheelin'
Thread Starter
iTrader: (3)
Specs for 2009+ J37A cams (RL)?
As some of you may know, im doing some motor work over the winter and I'm interested if anyone knows the Cam specs from the 2009+ J37A Acura RL and if the design changes would prevent them from fitting in a J32.
I have found the following comparison of features the RL's J37 to the cams found in the previous generation's J35 in news publications but Id also need lift/duration numbers IF they'd even fit:
"The longer duration cam increases intake valve lift by 27.9% and exhaust valve lift by 10%. The engine’s compression ratio is a high 11.2:1. The engine package is also lighter than the 3.5 liter V6 it replaces, thanks to weight-saving features such as 25% lighter hollow tubular steel camshafts with splined steel lobes and journals that are pressed into place. The cylinder heads have integrated exhaust port castings to allow closer positioning of the catalyst to the cylinder bank. The exhaust system is a variable flow system which switches over at 4,000rpm to increase flow from 130 liters per second to 150 liters per second."
Hey Al (Stillhere153), do you have any knowledge on this?
I have found the following comparison of features the RL's J37 to the cams found in the previous generation's J35 in news publications but Id also need lift/duration numbers IF they'd even fit:
"The longer duration cam increases intake valve lift by 27.9% and exhaust valve lift by 10%. The engine’s compression ratio is a high 11.2:1. The engine package is also lighter than the 3.5 liter V6 it replaces, thanks to weight-saving features such as 25% lighter hollow tubular steel camshafts with splined steel lobes and journals that are pressed into place. The cylinder heads have integrated exhaust port castings to allow closer positioning of the catalyst to the cylinder bank. The exhaust system is a variable flow system which switches over at 4,000rpm to increase flow from 130 liters per second to 150 liters per second."
Hey Al (Stillhere153), do you have any knowledge on this?
12-18-2009, 08:54 PM
#3
Three Wheelin'
Thread Starter
iTrader: (3)
haha, sorry man they dont. Found out today that they are a totally different design which use an oil pressure powered piston to engage a second vtec lobe for exhaust valves. lol
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