a used cat bypass pipe. thanks

 

whoops didn't mean to hijack

 

New ones run $475-$550 so a 1/2 decent used one I imagine would be worth $190-$250 or so. Like everything else, it depends on the brand/condition.

 

So, I still gotta ask as I too have a 95 993 with 80K on the clock...how much should I budget for exactly what you had done?

Thanks,
Paul

 

About $8k.

 

Of you observe the red line, you should never float your valves. Over the red line, the bets are off. Increase rpm = new conrods. $$

 

Fast Freddy, your car looks great, I really like the RUF wheels. Just wondering, is it normal to do replace piston rings on a top end rebuild?

 

JP,
I asked the question based on 3 factors:
1. The sometimes mentioned, but to my knowledge, never proven concern about valve spring fatigue over time.
2. Racing/DE applications.
3. New chip or remapping to change the rev limiter setting.

 

Good question... I figured that "might as well while you're in there", the cost was nominal. However, whether its necessary or not I don't have an answer for you.

Steve Weiner, are you there?

 

My piston rings were ok at the 120K rebuild. And the cylinder walls still had pristine cross-hatch marks. If that's an indicator. Rings not replaced. Even though I was very open to "while we are in there".

 

Hello Matt,

Regarding point #1... metallurgy never forgets. This is why turbine engines are operated at the lowest possible setting for take off given present runway and environmental conditions. Valve springs do lose some of their "spring" ...

Can a real "nennenneer" pipe in...??

 

8K is not that bad -----
and you get a much improved engine ....
not bad at all .....

 

Was there ever an option to go to a 3.8 build. Just wondering if you had a quote for this. I hear that the pistions / parts for a 3.8 build is around $7k. So I am betting it would have doubled the price. It might even be more if you throw in RS Cams and other goodies.

Jim

 

JP, no doubt! I just wondered how much the potential fatigue makes a real world difference for daily driving purposes. It's one thing to have a mechanic say they 'look and work fine', and quite another thing to have pistons and valves kissing each other.

 

The option was there, sure. But for just 5.5% (approx 15) more horespower in spending another $4500-$5000, I dunno.... As the kids say these days, "That's kinda spendy" I think we are at a point of diminishing return at about the horsepower these cars are already at. More hp only means very very nominal gains in truly meaningful performance. From what I understand our money is much better spent on a tranny re-gear rather than more grunt. Also, the LW flywheel, chip, cat bypass, exhaust, etc. has made about the same hp gain, perceived and real as the 3.8 p/c at substantially less cost. Yes, the 3.8's might add ANOTHER 5% but I would much rather put that money into suspension (done to my tastes/pursposes) or perhaps something else that disposable income would consume. For my tastes, this car is "done". It's just how I like it. On the other hand I'm in the process of getting another 993 that I am very seriously considering up-converting into an RS spec car that would be used primarily on the track and on the road to and from the track. That capital would be better spent there than on this car which is a daily driver.