Dual rocker arm guide - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sr vegas 240 · 11-21-2018, 11:52 AM

I did the dual guide conversion following the brewed Motorsports guide pretty simple but i have 1 concern there is 0 clearance between cam and rocker arm. Nissan does not give this spec, i've contacted brewed motorsports waiting for reply, anyone done this can share some info in regards of cam to rocker clearance.

Brewed Motorsports guide link
https://brewedmotors.com/blog/sr20de...m-install.html

TheRealSy90 · 11-21-2018, 03:54 PM

You really should shave each guide shim individually to match the thickness of each flat shim that it's replacing.

sr vegas 240 · 11-22-2018, 10:52 AM

That has been done and measured all are within .012mm that's not my issue. I am wondering since the cam is petty much touching the rocker arm with 0 clearance is this normal. Will this cause excessive wear? I'll try to take some pics today to show you what i mean.

sr vegas 240 · 11-23-2018, 12:22 PM

I talked to brewed motorsports and they told me nissan recommends .14 to .17mm from cam love to rocker arm pad surface.

sr vegas 240 · 12-04-2018, 10:06 PM

So I was given wrong information reason nissan does not give camshaft to rocker arm clearance because there isn't one. The hydraulic lifter removes any slack so the rocker arm rides on the cam at all time.

11-21-2018, 11:52 AM	#1
sr vegas 240 Zilvia Junkie Join Date: Dec 2013 Location: vegas Age: 36 Posts: 302 Trader Rating: (12) Feedback Score: 12 reviews	Dual rocker arm guide I did the dual guide conversion following the brewed Motorsports guide pretty simple but i have 1 concern there is 0 clearance between cam and rocker arm. Nissan does not give this spec, i've contacted brewed motorsports waiting for reply, anyone done this can share some info in regards of cam to rocker clearance. Brewed Motorsports guide link https://brewedmotors.com/blog/sr20de...m-install.html

11-22-2018, 10:52 AM	#3
sr vegas 240 Zilvia Junkie Join Date: Dec 2013 Location: vegas Age: 36 Posts: 302 Trader Rating: (12) Feedback Score: 12 reviews	That has been done and measured all are within .012mm that's not my issue. I am wondering since the cam is petty much touching the rocker arm with 0 clearance is this normal. Will this cause excessive wear? I'll try to take some pics today to show you what i mean.

11-23-2018, 12:22 PM	#4
sr vegas 240 Zilvia Junkie Join Date: Dec 2013 Location: vegas Age: 36 Posts: 302 Trader Rating: (12) Feedback Score: 12 reviews	I talked to brewed motorsports and they told me nissan recommends .14 to .17mm from cam love to rocker arm pad surface.

12-04-2018, 10:06 PM	#5
sr vegas 240 Zilvia Junkie Join Date: Dec 2013 Location: vegas Age: 36 Posts: 302 Trader Rating: (12) Feedback Score: 12 reviews	So I was given wrong information reason nissan does not give camshaft to rocker arm clearance because there isn't one. The hydraulic lifter removes any slack so the rocker arm rides on the cam at all time.