ok i just had my whole exhaust system replace fine but now its like 1 and 2 gear are nothing with the amount of power gained from the exhaust work.

1. what is the recommended rpms to shift for normal driving?

2. when im in 1st gear and i accidently get to 4k rpms and shift into second it grinds and is automatically puts my at 3k rpms so i immediatly go to third.


does anyone have any solutions for this

and when im just cruzing im staying at a steady 2500 rpms

the previous owner said he had a cam put in it so i dont know if this has anything to do with this

 

I have no idea what that means

Recommend shift point is under 5500 RPMs. The rest is up to you. I have know people that have never had their car over 2500 RPM and some that shift at 4K almost ever shift

It sound like you are complaining about the shift points of a manual shift car?

 

well duhh im complaining about 1st and 2nd gears especially when it grinds into second gear i know thats not got for my gears


but still didnt answer my questions though sorry gorn

 

On the exhaust, you aren't going to feel much of a power gain from it. So, like Gorn, I'm not following you on what's wrong in that aspect.

On what rpms to shift, any time I drive a manual, I don't usually go past 3k. Not because it's necessarily bad for the car, more so because it yields better fuel economy and because I see no reason to shift higher unless I'm racing.

The grinding...first thing that comes to my mind is, are you pushing the clutch far enough in to change gears? It's also possible the trans is worn. As for the rpms going from 4k to 3k when you shift from first to second, that is normal. You are changing gear ratios. When you upshift, you go to a higher ratio gear. Rpms will drop because of it.

What gear are you cruising in? Second? Third? Fifth? What gear you select determines your rpms.

 

every gear but first or second the whole exhaust part i feel a significant power increase when the guy was fixing my exhaust the whole exhause was clamped on by 2 screw on o orings, when he took them off the muffler just slid off. the tip were screwed on not welded like they were supposed to so really it was like riding around barely a muffler on. so to me who drives it everyday i feel more power.

before the exhaust work i would hit 4000 rpms and shift to second and the rpms would got down to 2000.


me personally the trans is getting worn or the fluid id getting bad i have another thread of stuff i was doing to this car and it was horrible so my guess is the trans fluid is bad and new fluid or second gear is starting to go out

ill try to post a youtub video of what im talking about if my fience will hold a camera

 

There was no mention of grinding in your first post. Grinding can be caused by three things.

Clutch not full disengaging.
Synchronizers fail inside the transmission.
Bent of loose shift fork in the transmission.(this will damage the Syncs if driven that way long)

I would suggest taking the car to a transmission mechanic and let him drive it. He can tell you if the issue is the clutch or the trans itself.

Loose exhaust parts do not take away power. In fact if you cut your exhaust off completely you would gain power. Your claim that you have more HP gains in some gears makes no sense. It just an engine its power output is not effected by what gear it is in. Also the RPM’s/Gears are fixed, it does not vary. The RPM’s when you shift are exactly the same as they were before the exhaust change. There is NO variability in manual gears. Mathematically what you are saying is happening cannot be happening.

Since we can only go by what you are saying, I would guess that the new exhaust added a small amount of torque at the lower RPM’s because the motor breaths a little better. You just feel the torque in the higher gears a little more because you are in the lower RPM range longer. I would also guess you feel like the RPMs are different because of the change in you torque curve. There is no fix for this you just have to get use to it.

 

I would also suggest checking the lube in the transmission. Drain it out check for pieces of metal and brass, and refill with new lube.

 

Well yes, he did mention grinding in his first post:
Unless the muffler was restricted internally, there would be no reasonable explanation for why you would notice a difference in power...unless a more free-flowing muffler was installed. Even then, the noticeable difference wouldn't be great. You must have a very sensitive butt-dyno!
Your rpm's at the 1-2 shifts going from 4k to 3k, where before it was 4k to 2k, would not be exhaust related. What that's suggesting is that the clutch would be slipping after you shift. Take the car out on the open road, cruising about 40 mph or so in 4th gear. Get off the gas, pop the clutch pedal in, rev the engine to 4k or so, let the clutch out quickly, and watch the tach. If you don't feel the clutch grab firmly, and you see the rpm's glide back down slowly instead of more quickly, you have a worn/slipping clutch. You should feel a good jerk when you do that.

 

ill try that out 69

i think yall think im crazy but im not it did have a flowmaster on it but more of the exhaust was comming out before it hit the muffler. So now with everything welded on the car has a working flowmaster on is why i feel a notice.

If free flow mufflers didnt offer hp gain why would people buy them and no0t just use a gutted out nuffler?


and gorn no offence but in mathematics there are things call anomalies which in terms means that there is something different in your mathematic equation on theory

 

Mufflers are there to muffle the noise of the engine makes. Mufflers do not add power it is just some mufflers take away less power than others. Ever seen a race car with mufflers? If you have it is a requirement needed for the spectators or location. Given the choice race car builders just run short pipes.

I am not a mathematics expert but I am a degreed, GM and ASE certified Master tech. As Camaro 69 pointed out your clutch could be slipping but other than that any anomalies that would cause an RPM change in a manual transmission would mean a LOT of broken parts in the bottom of your transmission housing. It is a gear box, You turn the input shaft 1 turn the output shaft turn X amount. Each gear has its own “X” value. That does not change. Your best bet would be to just take the car to someone that works on them. A transmission mechanic would be the best but ANY mechanic should be able to tell you if your clutch is slipping so badly it changes your RPMs by 1000.