Rebuild Won't Start. Please Help!!! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

awdfury · 03-09-2011, 09:55 PM

So here is the story:

I recently rebuilt the top half of my SR20DET with HKS 264 Cams, HKS adjustable cam gears. The intake manifold and head have been port, polished and flow matched. I changed the valve springs and retainers to Greddy Springs and Titanium Retainers. The valves had a vlave grind performed and after assembly the head was pressure tested before installing it on the block.

Now that everything is back together I cannot get the engine to start.

I have tested for spark and I know the engine is getting fuel. I was able to get one puff of flame out the exhaust but other then that I cannot get the engine to turn over.

Any Ideas?

sr20sean · 03-09-2011, 10:18 PM

your timing is off.

archaeic_bloke · 03-09-2011, 10:21 PM

yea, it's gotta be timing... do you have a timing light?

if not definitely run to what ever is closest and pick one up, they're so cheap and it'll save you from potentially destroying your brand new head!

napz510 · 03-09-2011, 10:28 PM

check your cam timing and your cas.......

Andrew@9K · 03-10-2011, 12:59 AM

Timing forsure! I think I could shead some light on this. Sometimes if you get the cam timing wrong it sounds like its popping off back thru the intake. If its CAS timing it will have a hard or start but awkwardly.. hope this helps

awdfury · 03-10-2011, 08:07 PM

cas it was thanks for the help. Should of thought of that myself.

03-09-2011, 09:55 PM	#1
awdfury Leaky Injector Join Date: Jun 2006 Location: Mount Vernon, Wa Age: 41 Posts: 109 Trader Rating: (0) Feedback Score: 0 reviews	Rebuild Won't Start. Please Help!!! So here is the story: I recently rebuilt the top half of my SR20DET with HKS 264 Cams, HKS adjustable cam gears. The intake manifold and head have been port, polished and flow matched. I changed the valve springs and retainers to Greddy Springs and Titanium Retainers. The valves had a vlave grind performed and after assembly the head was pressure tested before installing it on the block. Now that everything is back together I cannot get the engine to start. I have tested for spark and I know the engine is getting fuel. I was able to get one puff of flame out the exhaust but other then that I cannot get the engine to turn over. Any Ideas? __________________ Everything happens for a reason.

03-09-2011, 10:21 PM	#3
archaeic_bloke Join Date: Jan 2007 Location: Canada Age: 38 Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	yea, it's gotta be timing... do you have a timing light? if not definitely run to what ever is closest and pick one up, they're so cheap and it'll save you from potentially destroying your brand new head! __________________ The SkyLife Community & News Website: --> http://www.skylife4ever.com

03-10-2011, 08:07 PM	#6
awdfury Leaky Injector Join Date: Jun 2006 Location: Mount Vernon, Wa Age: 41 Posts: 109 Trader Rating: (0) Feedback Score: 0 reviews	cas it was thanks for the help. Should of thought of that myself. __________________ Everything happens for a reason.

03-09-2011, 10:18 PM	#2
sr20sean Nissanaholic! Join Date: Apr 2009 Location: lagrangeville, ny Posts: 2,118 Trader Rating: (25) Feedback Score: 25 reviews	your timing is off.

03-09-2011, 10:28 PM	#4
napz510 Zilvia Junkie Join Date: May 2008 Location: FULLERTON Age: 40 Posts: 543 Trader Rating: (36) Feedback Score: 36 reviews	check your cam timing and your cas.......

03-10-2011, 12:59 AM	#5
Andrew@9K Join Date: Feb 2011 Location: Chino Hills Posts: 38 Trader Rating: (0) Feedback Score: 0 reviews	Timing forsure! I think I could shead some light on this. Sometimes if you get the cam timing wrong it sounds like its popping off back thru the intake. If its CAS timing it will have a hard or start but awkwardly.. hope this helps