Finn
??
You are correct ??? the dimensions were
overall!?? The measured fin area is 12.25??? wide, 17.75??? long
and 2.5 in thick = 543 in.cube.
My invoice from Summit?? in 2016 shows a
part number GRI-2-58185-X?? cost $295.95.
The new part # may be 2-56185-H.
The James cowl I used has the air intake
under the spinner.?? That is why I mounted the radiators under
the motor mount!
I ??do not know if they still make this
cowl.?? I once heard they moved and did not take the mold with
them.
??
Dennis
??
Sent from Mail for Windows 10
??
??
Thank you Dennis.
Are you sure those are core dimensions and not overall
dimensions?
Do you happen to have the model number of that radiator?
What did you do with the openings on either side of the
spinner? Or is there a James cowl version with only a big
opening under the spinner?
Finn
On 9/15/2019 7:35 PM, Dennis Haverlah clouduster@austin.rr.com wrote:
Finn,
??
Sorry for the
late reply to your 9/7/19 post.
??
I used a James
cowl on my RV 7 A with a Renesis 4 port.???? My water
??radiator was a Scirocco drag race radiator ??? core
measures ??13 in wide x 22 in long and 2.5 inch thick for
715 ??cubic inches.?? For the oil I used a stock RX-7 oil
cooler (2.0 inch thick) with the bypass plugged.?? The
radiators are mounted side by side under the
engine motor mount.?? The aft end of ??the radiator
assembly is against the cowl bottom and the radiator
assembly is bolted to the motor mount structure at a 30
deg angle with the high end just above the James cowl air
??inlet under the spinner.?? ??The air flows in under the
radiator assy. up through the rads and out at the
firewall.
??
I cut a small
opening above the James cowl ??cooling air inlet to use
for engine combustion air.?? In the cowl under the
radiator assembly I built a pinched duct to try to
distribute the airflow evenly through the radiators.
(Probably could improve it)???? If it is real hot when I
takeoff I reduce throttle as required to control my oil
temp to not exceed 220 F. My water temp is usually 10 deg
cooler than the oil temp.?? I have taken off fully loaded
when the air temp. was 105 deg F. and climbed at 20 inches
manifold pressure to control temps.??
??
I have about
860 hours on the engine.?? The doner car had about 9,000
miles on it when it was wrecked.?? The engine has never
had the rotor assembly taken apart.?? Most of my flying
now is 10 minute flights from 40XS to GTU to play tennis 3
- 4 times a week.
??
??
??
??