Main cap ?

[tynewbie]

I was puliing my motor apart and when I got the oil pan off I didn't notice the N stamped in the main caps. They have a F and a arrow on one side and they are numbered on the other. I did a search and couldn't find any good pictires to see were the N is supose to be. Any help is app.

 

[IneedaSY]

Re: Main cap ?

I posted under my brothers name by mistake. This is my question thanks

 

[IneedaSY]

Re: Main cap ?

Well I pulled the rest of engine apart and got even more suprises. This isn't an original syty engine like I was told. The block isn't orginal. The engine has TRW pistons with 9.72 compression ratio( wonder if thats why it was knocking so bad) It has a Crane came part# 184111. The specs are

Basic Operating RPM Range: 1,000-4,000 RPM
Intake Duration 050 inch Lift: 194
Exhaust Duration 050 inch Lift: 204
Duration at 050 inch Lift: 194 int./204 exh.
Advertised Intake Duration: 256
Advertised Exhaust Duration: 266
Advertised Duration: 256 int./266 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.407
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.429
Valve Lift with Factory Rocker Arm Ratio: 0.407 int./0.429 exh. lift
Lobe Separation (degrees): 112
Intake Valve Lash (in): 0.000
Exhaust Valve Lash (in): 0.000
Computer Controlled: Yes
Grind Number: 2020
CARB EO Number: D-225-22
Quantity: Sold individually

Can someone please tell me if I should keep this cam or get a different one. I know I have to get diferent pistons. Thanks

 

[SY2455]

Re: Main cap ?

It's not much bigger than the stock cam, I would replace it.