piston valve reliefs?
#1
Thread Starter
Professional Hoon
Rennlist Member
Rennlist Member
piston valve reliefs?
Who's done this on a 944 8v? I know it's been done on the hybrid stroker motors, but what about just normal 2.5L
I know i'll be needing to get new pistons, I'm sure they're damaged.
I'm looking at Wossner pistons probably.
I want to fly cut these so if this ever happens again (1 year old timing belts stuffed), i know i'll be safe and the internals won't be broken. Just a safety measure really.
I know i'll be needing to get new pistons, I'm sure they're damaged.
I'm looking at Wossner pistons probably.
I want to fly cut these so if this ever happens again (1 year old timing belts stuffed), i know i'll be safe and the internals won't be broken. Just a safety measure really.
#3
Thread Starter
Professional Hoon
Rennlist Member
Rennlist Member
There's a few ways to do it. I.e turning the valve into a fly cutter ect.
We've got an engineering shop, so it's not to difficult on a mill.
Just after some exp on it.
We've got an engineering shop, so it's not to difficult on a mill.
Just after some exp on it.
#4
Rainman
Rennlist Member
Rennlist Member
https://rennlist.com/forums/944-turb...ce-engine.html
Laust offers it as a service for a reasonable price.
You could maybe have your Wossners shipped to him, cut and then shipped off to you?
Although quite frankly for not much more than that, you could just have Wossner design the reliefs into your pistons for you.
Standard 951 Wossner pistons from 100-101mm are about US$650/set...but they will make anything you want for ~$1000/set of 4.
Laust offers it as a service for a reasonable price.
You could maybe have your Wossners shipped to him, cut and then shipped off to you?
Although quite frankly for not much more than that, you could just have Wossner design the reliefs into your pistons for you.
Standard 951 Wossner pistons from 100-101mm are about US$650/set...but they will make anything you want for ~$1000/set of 4.
#5
Thread Starter
Professional Hoon
Rennlist Member
Rennlist Member
https://rennlist.com/forums/944-turb...ce-engine.html
Laust offers it as a service for a reasonable price.
You could maybe have your Wossners shipped to him, cut and then shipped off to you?
Although quite frankly for not much more than that, you could just have Wossner design the reliefs into your pistons for you.
Standard 951 Wossner pistons from 100-101mm are about US$650/set...but they will make anything you want for ~$1000/set of 4.
Laust offers it as a service for a reasonable price.
You could maybe have your Wossners shipped to him, cut and then shipped off to you?
Although quite frankly for not much more than that, you could just have Wossner design the reliefs into your pistons for you.
Standard 951 Wossner pistons from 100-101mm are about US$650/set...but they will make anything you want for ~$1000/set of 4.
#7
Thread Starter
Professional Hoon
Rennlist Member
Rennlist Member
How big are your valves?
I'm not sure how "hard" it would be to be honest. Hence the thread. But i'll be doing it with large intake valves also. 48.2mm valves. I'll be doing it regardless because i don't want to go though this again.
I'll probably use the stock pistons for testing, and use the mill to fly cut them. I also have a much larger lift on my cam also.
I'm not sure how "hard" it would be to be honest. Hence the thread. But i'll be doing it with large intake valves also. 48.2mm valves. I'll be doing it regardless because i don't want to go though this again.
I'll probably use the stock pistons for testing, and use the mill to fly cut them. I also have a much larger lift on my cam also.
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#8
How big are your valves?
I'm not sure how "hard" it would be to be honest. Hence the thread. But i'll be doing it with large intake valves also. 48.2mm valves. I'll be doing it regardless because i don't want to go though this again.
I'll probably use the stock pistons for testing, and use the mill to fly cut them. I also have a much larger lift on my cam also.
I'm not sure how "hard" it would be to be honest. Hence the thread. But i'll be doing it with large intake valves also. 48.2mm valves. I'll be doing it regardless because i don't want to go though this again.
I'll probably use the stock pistons for testing, and use the mill to fly cut them. I also have a much larger lift on my cam also.