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Cal-look/High Performance => Technical stuff => Topic started by: Nisse1 on March 01, 2017, 22:25:04 pm



Title: Type 4 engine problem
Post by: Nisse1 on March 01, 2017, 22:25:04 pm
The problem is my 82mm stroke Scat crankshaft. The Scat rods hit the JPM cam lob. To solve the problem we should make a new camshaft and use Pauter rocker arm 1:1,48. Now, I can't faind any Pauter rocker arms but I got a tip, use old Pauter rocker arms with needle roller bearings. I need help!
Best regards
Chrille (member just now!)


Title: Re: Type 4 engine problem
Post by: mikko k on March 02, 2017, 05:16:40 am
Grind the end of rods and then balance the rods.


Title: Re: Type 4 engine problem
Post by: Elnef on March 02, 2017, 18:58:06 pm
Is the cam made on 1" basecircle ?
I run with pauter light rod with them there is more space


Title: Re: Type 4 engine problem
Post by: Torben Alstrup on March 03, 2017, 20:40:00 pm
What rod bearing journal?
As John asks, what cam base cirkel?




Title: Re: Type 4 engine problem
Post by: Nisse1 on March 04, 2017, 13:57:16 pm
Its chevy, I'm not shore about The basecircle. It's  made by JP Motorsport. Our plane is to make The basecircle a little  bit smaller and then  grind The end of the rods.


Title: Re: Type 4 engine problem
Post by: Torben Alstrup on March 04, 2017, 19:53:45 pm
Replace the Scat rods with CB rods and their ARP2000 bolts. - Or at least try with one. Just maybe that will give you enough clearance. its worth a try.

T


Title: Re: Type 4 engine problem
Post by: Udo on March 08, 2017, 12:40:44 pm
[attachment=1]I would highly recommend light Pauter rods . Those are strong and give you enough clearance to the lobe up to 86 stroke. I only use them in type4 engines with bigger cranks
Don't use CB rods in a type4 engine. They need too much space
Udo


Title: Re: Type 4 engine problem
Post by: Torben Alstrup on March 10, 2017, 22:08:55 pm
[attachment=1]I would highly recommend light Pauter rods . Those are strong and give you enough clearance to the lobe up to 86 stroke. I only use them in type4 engines with bigger cranks
Don't use CB rods in a type4 engine. They need too much space
Udo
Compared to Scat they are not big. actually somewhat slimmer. The Pauter ones are even slimmer, yes.

T