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Balancing
Posted: Thu Jul 19, 2007 2:26 pm
by Blitzkrieg
Is it worth balancing and maybe lightening the crank etc on a Type4 engine?
What is the maximum that a Type4 crank can spin to in standard form?
Posted: Thu Jul 19, 2007 3:06 pm
by eben
Type IV bottom end is "bullet proof" is what I've heard..... Much much more so than type I
Posted: Thu Jul 19, 2007 3:21 pm
by calooker
Normally it's the flywheel that gets meat taken off, I recommend a full ballance on any motor, even more so if it will be eving above stock.
Posted: Thu Jul 19, 2007 3:26 pm
by Blitzkrieg
Okay and price?How much are we looking at for balancing?
Posted: Thu Jul 19, 2007 3:32 pm
by calooker
@ Fulrace R420
Posted: Mon Jul 23, 2007 2:36 pm
by flatfourfan
^^^ bargain........
Posted: Mon Jul 23, 2007 3:32 pm
by Blitzkrieg
Honestly, I was expecting much more!!!
Re: Balancing
Posted: Mon Jul 23, 2007 7:14 pm
by Bugger
What is the maximum that a Type4 crank can spin to in standard form?[/quote]
You can spin it up to 6000Rpm with the right CAM
My friends t4 can spin up even higher but the valve bounce is keeping us back at the moment till the Titanium retainers and stronger springs
cos the stainless steel valves are heavy
Posted: Wed Sep 12, 2007 12:45 pm
by 4agedub
My type 4 limits at 7000rpm with a 80mm crank and 103 mm pistons, no problem.
Maybe look at getting the crank counter weighted, should make a huge difference
Re: Balancing
Posted: Wed Sep 12, 2007 1:06 pm
by Blitzkrieg
Bugger wrote:What is the maximum that a Type4 crank can spin to in standard form?
You can spin it up to 6000Rpm with the right CAM
My friends t4 can spin up even higher but the valve bounce is keeping us back at the moment till the Titanium retainers and stronger springs
cos the stainless steel valves are heavy[/quote]
Where did he get his stainless steel valves from?
Posted: Wed Sep 12, 2007 1:08 pm
by Blitzkrieg
4agedub wrote:My type 4 limits at 7000rpm with a 80mm crank and 103 mm pistons, no problem.
Maybe look at getting the crank counter weighted, should make a huge difference
I'm not revving mine past 5000 rpm
Posted: Wed Sep 12, 2007 5:24 pm
by Bugger
Stainless got from v spares
But there are nowadays so many that can be made to fit valve wise
Blitz toy got noting to worry spinning 5500 thats a nice rpm
You can knife edge the crank but beware who does it can end up trowing the crank away by meat taken away at ceartain places and it could not be balanced anymore
Posted: Thu Sep 13, 2007 2:37 pm
by Blitzkrieg
Okay, and are ARP rod bolts worth getting?
Posted: Thu Sep 13, 2007 3:25 pm
by Bugger
for what you building would say will "waste" your money
stockt4 rodbolts are not stretch bolts as 2.1wbx there for good for a fair amount HP
Posted: Thu Sep 13, 2007 3:34 pm
by Blitzkrieg
Bugger wrote:for what you building would say will "waste" your money
stockt4 rodbolts are not stretch bolts as 2.1wbx there for good for a fair amount HP
Okay thanks
Where can i buy new standard rod bolts from?