Stu_22
Member
Registered: 25th Mar 02
Location: Luton
User status: Offline
|
So we talking 8,000rpm with deseamed rods
|
Greasemonkey
Member
Registered: 17th Apr 02
Location: Drives a Tractor
User status: Offline
|
i think thats what miles is reving too, and he has deseamed rods and ARP rod bolts, i think any more and ya looking at gettin steel rods fitted, very expensive
|
miles
Member
Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
User status: Offline
|
Yeah, I go to 8k. Others go to it without deseemed rods, but for peace of mind and a bit of added safety it cant be bad.
I wouldn't fancy going over that, as you then need to worry about the rods, lubrication and the top end.
|
Stu_22
Member
Registered: 25th Mar 02
Location: Luton
User status: Offline
|
Miles I assume you have your pistons pocketed are the Piper BP285's the max cam lift with the standard pocketed pistons
|
Greasemonkey
Member
Registered: 17th Apr 02
Location: Drives a Tractor
User status: Offline
|
he has 2mm valve pockets cut im pretty sure of that, the standard pistons have pockets in them but ya get them cut, but 2mm is the maximum
[Edited on 05-05-2004 by Greasemonkey]
|
miles
Member
Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
User status: Offline
|
I had pockets cut into the standard pistons. Cant remember how deep, think it was 40 thou, which is about 1mm. The head was then skimmed to make up the compression.
|
Stu_22
Member
Registered: 25th Mar 02
Location: Luton
User status: Offline
|
Is it the line down the side that is removed in deseaming
|
PaulW
Member
Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline
|
How easy would it be though to source a decent set of 2nd hand TB's with management??
|
miles
Member
Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
User status: Offline
|
Yes thats the seem alright. There is also one on the cap. Worth getting them weighed before and after (or at least balanced to make sure they are the same afterwards. One of the problems is that you cant really get the pistons off without risking cracking them. So you have to be careful with the swarf and make sure you clean them properly afterwards.
Second hand TB kits come up sometimes, keep an eye out on here and migweb.
|
Stu_22
Member
Registered: 25th Mar 02
Location: Luton
User status: Offline
|
Well i hope i can get the piston off as I have new ones.
Where did you get yours done milesand how much
|
miles
Member
Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
User status: Offline
|
The piston will come off, but it might well break.
Velos do it for about £70 IIRC. Mine were done DIY by a good mate of mine, not much too it tbh.
|
Greasemonkey
Member
Registered: 17th Apr 02
Location: Drives a Tractor
User status: Offline
|
do you have to get the surface of the rod shot peened to harden the surface back up after, this is what i was told, otherwise the surface of the metal will be softer where you took the seam off?
We had to use a press the gugeon pins in and out of my pistons i couldnt get the fookers off!!!!
One of my gegeon pins was loose when the engine was runnin and cut a groove nearly straight through into the next bore, SCAREY!!
|
Stu_22
Member
Registered: 25th Mar 02
Location: Luton
User status: Offline
|
Velos told me £100 to deseam and peen
|
Greasemonkey
Member
Registered: 17th Apr 02
Location: Drives a Tractor
User status: Offline
|
well all depends on what spec ya engine is gonna be, if ya gonna be revvin 8000rpm+ then do it, if not i wouldnt bother, i wish i had had it done oh well, bring on the MR2 or LET
|
