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RX-7 1st Gen Specific (1979-85) RX-7 1979-85 Discussion including performance modifications and technical support sections |
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#16 |
Rotary Fanatic
Join Date: Mar 2008
Posts: 215
Rep Power: 18 ![]() |
The gilmer is probably as loud as an atkins supecharger with the 5 or 6 pk belt on their aluminum pulley kits. It can be deafening if the SC is new and you lean your ear next to it, but with the hood closed and normal driving, it just sounds like a little something. Probably just like a gilmer.
I like RB mufflers. As far as I'm concerned, it's RB or Borla and not much else. Maybe Rotary Engineering glasspacks, but I'm starting to tire of the noise levels, even it it's mainly bass-throaty like on my REPU. I'd prefer the sound of an RB dual pipe 'streetport' full exhaust system because it's quiet at idle, just fine at cruize and you can hear it when you get on it. Perfect. Yeah, the 30 pounder can be easy to drive at times, but once you go through the learning curve with a light steel, you will love it and never want to drive a heavy flywheel again. Even the mild '83-'85 12A and GSL-SE flywheels feel heavy comparatively. I will say this though, my bro's RX-4 had a GSL-SE flywheel and was perfect while NA, but while it had the 5" supercharger, it felt like the old heavy stock 30 pound flywheel. Once the SC came off, it felt fine again. I wouldn't want a light steel for that car, unless it had an SC, because the vehicle weight is kinda highish and the rear diff gearing is very high at 3.636. My Cosmo is going to be the same way - similar vehicle weight, same tall diff gearing, but bigger (taller) 14" tires. I have a GSL-SE flywheel waiting to go in. My REPU currently has a 30 pound stock flywheel which really sucks to drive, partially because the rear gearing is a little lower, and when there is no weight in the bed, the flywheel is just too heavy. Plus it has other problems like a leaky slave cylinder, grabby clutch that's worn out and has bad springs etc. It's a chore to drive. I have a new light steel flywheel, stock disc and SS pressure plate which should match the heavy duty stock pressure plate in pedal effort. Hopefully the stock disc won't be so abrupt and should allow towing and the reduced weight of the light steel will make a supercharger install a reality. The extra weight of the SC will add back what the light steel flywheel takes away and should allow easy shifts, like you said, and towing ability. That's my take on it anyway. I won't know until the new engine is built and installed. Well, have fun with your gilmer. Last edited by Jeff20B; 04-19-2008 at 08:44 PM. |
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#17 |
Rotary Fan in Training
Join Date: Feb 2008
Location: Bishopville, SC
Posts: 32
Rep Power: 0 ![]() |
Where's your fan?
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#18 |
sa rat rod
Join Date: Mar 2008
Location: tewksbury ma
Posts: 408
Rep Power: 18 ![]() |
i had two efan's mounted in front that where meant for a jeep. my brother was about to install one on his jeep and his friends. i was so happy i figured out my wiring problem i needed to hear the car run so i used them.the car was 90% stock before i took it off the road. only thing i did was msd coil's and ngk wires and plugs and a ebay muffler i put on because the stock one was rusted away.. now i have the complete respeed street suspension setup, and racing beat header mini muffler thing. i really wanted to hear the motor.
my wiring problem was solved by a 10 cent plastic washer. i didn't have a plastic washer between the battery wire that goes to the alt, and a signal cleaner i think thats whats it called. it kinda looks like a round tube with a flange and a wire that goes on the same alt stud,the wire that goes to the battery gets bolted on. my buddy who went to uti said he has seen them before. he said it prevent spikes or some thing. jeff20b probably could explain it better. funny how that was the problem with my car a washer. iam trying to find a cheaper muffler that i can use to replace the ebay one. i want it to have a nice tone and not to loud, def not a ricer fart can. jeff iam going to hit you up with a pm. |
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