rpm and highway speed in a CRX HF
Hi all,
I just have finished up redoing a 1990 CRX HF including putting in a new transmission. This was a rebuild and I specified that it had to be the HF gearing. However now that I am up and running it seems as if it is geared high and I do not get the gas mileage I wanted. I am running 174/65/14 tires which are a hair bigger than stock but not much. In 5th gear at 60 mph the tach reads close to 3000rpm. So anyone out there with a HF who can tell me what they get in the various gears. That way i can tell if I have got the HF gear ratios I wanted or if the rebuilder used the non-HF gears. Any help would be appreciated. |
You might have the same gears as this guy:
https://www.gassavers.org/showthread.php?t=9265 I seriously doubt your gears are too high. 3000rpm is far too much for 60mph, you should probably get higher gears so your rpm will be lower. |
I bet you have Si transmission gears and/or final drive- I put an HF trans in my 87 civic and it runs about 2K rpms at 60mph. The original DX transmission ran about 2600 rpms at 60 mph.
|
Good info guys. I think I got the high/low gear thing backwards. Bottom line it seems that the rpm should be lower for a given speed.
So guess I am back to the rebuilder to see what they put in it or if they admit to anything there. Anyone got leads on a used genuine HF trans? Thanks |
You should be able to find one on car-part.com
|
All times are GMT -8. The time now is 01:35 PM. |
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.