ka24de rebuild problem!!!! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

hgarza240 · 07-13-2009, 07:08 PM

ok i need help finding the problem guys the scenario is that im rebuilding my s14 ka24de ok the motor will only turn over so far and then valve hits a piston my set up is supertech pistons 89.50mm 9:1 compression,eagle rods,stock head just had it machined,and new oem head gasket my opinion is possibly need thicker head gasket or need to get the valves cut what do you guys think i need help!!! oh and yes the timing was correct i double checked it

let5l1de · 08-04-2009, 07:57 PM

this is old but tell us what was wrong.

--

sounds like 1 or both of the timing chains were off. stock length eagle rods are not the issue. double check the pistons although im confident they are correct. If excessive machining or surfacing of head and deck was done, this can change the timing dramatically depending on how much material was removed. check with your machine shop. head gasket shouldn't be the problem and do not cut the valves....

you should really rebuild your engine with someone who has experience...

~m

project-D180 · 08-04-2009, 08:37 PM

MAKE SURE U LINED UP THE CAMS RIGHT.EVEN WITH CORRECT TIMIN THEY WILL HIT..and turn atleast 1 or 2 time by hand n make sure everything is right so u dont risk bending vavles by cranking it

huntington19 · 09-15-2009, 09:58 PM

timing may look correct but make sure you're at the compression stroke. you may have your timing flipped 180 and it will look like it's fine. i had the same problem.

07-13-2009, 07:08 PM	#1
hgarza240 Join Date: Mar 2009 Location: tx Posts: 36 Trader Rating: (1) Feedback Score: 1 reviews	ka24de rebuild problem!!!! ok i need help finding the problem guys the scenario is that im rebuilding my s14 ka24de ok the motor will only turn over so far and then valve hits a piston my set up is supertech pistons 89.50mm 9:1 compression,eagle rods,stock head just had it machined,and new oem head gasket my opinion is possibly need thicker head gasket or need to get the valves cut what do you guys think i need help!!! oh and yes the timing was correct i double checked it Last edited by hgarza240; 07-14-2009 at 05:02 AM..

08-04-2009, 07:57 PM	#2
let5l1de Zilvia FREAK! Join Date: Dec 2007 Location: 626DRIFT, ca Posts: 1,420 Trader Rating: (30) Rides Gallery: let5l1de Feedback Score: 30 reviews	this is old but tell us what was wrong. -- sounds like 1 or both of the timing chains were off. stock length eagle rods are not the issue. double check the pistons although im confident they are correct. If excessive machining or surfacing of head and deck was done, this can change the timing dramatically depending on how much material was removed. check with your machine shop. head gasket shouldn't be the problem and do not cut the valves.... you should really rebuild your engine with someone who has experience... ~m __________________ GR Performance facebook Pics & More! Comments! http://www.facebook.com/pages/GR-Performance/120477531339202 Read My Sales Review 626 Friday Nights San Gabriel

08-04-2009, 08:37 PM	#3
project-D180 Zilvia Addict Join Date: Apr 2008 Location: south caroloina Posts: 987 Trader Rating: (2) Feedback Score: 2 reviews	MAKE SURE U LINED UP THE CAMS RIGHT.EVEN WITH CORRECT TIMIN THEY WILL HIT..and turn atleast 1 or 2 time by hand n make sure everything is right so u dont risk bending vavles by cranking it

09-15-2009, 09:58 PM	#4
huntington19 Leaky Injector Join Date: Jul 2009 Location: long beach Age: 35 Posts: 63 Trader Rating: (0) Feedback Score: 0 reviews	timing may look correct but make sure you're at the compression stroke. you may have your timing flipped 180 and it will look like it's fine. i had the same problem.