Gy6 egr vs non-egr camshaft question

bighogman · 08-17-2018, 10:29 PM

I tried to install a non-egr A9 camshaft to an 150 cc egr GY6 engine. the lobe height is not high enough. I verified the cam and it was correct. I suspect the egr head has a lower ratio rocker arm. I was wondering if i can change the cylinder head and rocker assembly to a non-egr. Also, I may want to install an 165cc or a 172cc big bore kit. Any help would be appreciated.

2016 Znen rx 150 , engine BN157QMJ

tortoise · 08-18-2018, 12:23 AM

Quote:

Originally Posted by bighogman

verified the cam

Possibly incompatible cams . . typical GY6 . . GY6B?

bighogman · 08-18-2018, 05:24 AM

I put the A9 cam in it and it runs to about 45 mph. The cam lobe is not high enough. Tortoise - the specs for the cam makes sense now. it's gotta be the rocker arms

08-17-2018, 10:29 PM	#1
bighogman Join Date: Aug 2018 Posts: 6	Gy6 egr vs non-egr camshaft question I tried to install a non-egr A9 camshaft to an 150 cc egr GY6 engine. the lobe height is not high enough. I verified the cam and it was correct. I suspect the egr head has a lower ratio rocker arm. I was wondering if i can change the cylinder head and rocker assembly to a non-egr. Also, I may want to install an 165cc or a 172cc big bore kit. Any help would be appreciated. 2016 Znen rx 150 , engine BN157QMJ
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08-18-2018, 05:24 AM	#3
bighogman Join Date: Aug 2018 Posts: 6	I put the A9 cam in it and it runs to about 45 mph. The cam lobe is not high enough. Tortoise - the specs for the cam makes sense now. it's gotta be the rocker arms
	0