ka24e rebuild - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

alemuscmk · 11-07-2013, 04:18 PM

so Ive checked all clearences on my main bearings and they all check ok, i used some lucas engine lube on them, assembled and torqued them accordingly, however Ive heard that you should be able to rotate the crank by hand, on my block you cant, i had tripple checked the clearences before assembly so this is bugging me bad any ideas??

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yetijeff · 11-11-2013, 05:25 PM

did u plastigauge the mains?

alemuscmk · 11-11-2013, 06:03 PM

Yes I plastigauged them and they are all within specs, I can rotate the crankshaft if I have the crank pulley bolt on and use a socket, but ive heard that you should be able to rotate it with your hands with little effort (doesnt make sense due to clearences)

yetijeff · 11-11-2013, 09:40 PM

I would say if u platigauged and everything was in spec u should be ok. I've built motor sthat could be turned by hand and some that couldn't. It's kinda hard to explain but do u feel uniform resistance all 360 degrees of rotation? Like it doesn't feel like it gets harder then easier or anything like that?

alemuscmk · 11-12-2013, 04:15 PM

Its a little hard to start the rotation but once its free it will rotate uniformly, doesnt get hard at some points

yetijeff · 11-12-2013, 04:43 PM

Quote:

Originally Posted by alemuscmk

Its a little hard to start the rotation but once its free it will rotate uniformly, doesnt get hard at some points

Then you should be fine.

Flyin_bryan · 11-19-2013, 10:33 AM

i agree you'll be fine, built engines for a couple of years for a living. Just my 2 cents.

alemuscmk · 11-19-2013, 10:40 AM

Alright thanks guys

dreek93sr20 · 12-19-2013, 04:13 AM

I just put my sr back together after installing a built head and 272 cams...for some reason when i try to turn the engine by crank and socket it is extremely hard. Is it possible when i did the timing chain that I skipped a tooth or put the slack to the tensioner the wrong way???

alemuscmk · 12-21-2013, 09:19 AM

Check the gears, does sound like youve skipped a tooth

11-07-2013, 04:18 PM	#1
alemuscmk Join Date: Jul 2013 Location: green forest, Arkansas Age: 29 Posts: 33 Trader Rating: (2) Feedback Score: 2 reviews	ka24e rebuild so Ive checked all clearences on my main bearings and they all check ok, i used some lucas engine lube on them, assembled and torqued them accordingly, however Ive heard that you should be able to rotate the crank by hand, on my block you cant, i had tripple checked the clearences before assembly so this is bugging me bad any ideas?? Posted from Zilvia.net App for Android

11-11-2013, 09:40 PM	#4
yetijeff Zilvia Addict Join Date: Sep 2010 Location: Corona Ca Age: 31 Posts: 765 Trader Rating: (3) Feedback Score: 3 reviews	ka24e rebuild I would say if u platigauged and everything was in spec u should be ok. I've built motor sthat could be turned by hand and some that couldn't. It's kinda hard to explain but do u feel uniform resistance all 360 degrees of rotation? Like it doesn't feel like it gets harder then easier or anything like that?

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11-11-2013, 05:25 PM	#2
yetijeff Zilvia Addict Join Date: Sep 2010 Location: Corona Ca Age: 31 Posts: 765 Trader Rating: (3) Feedback Score: 3 reviews	did u plastigauge the mains?

11-11-2013, 06:03 PM	#3
alemuscmk Join Date: Jul 2013 Location: green forest, Arkansas Age: 29 Posts: 33 Trader Rating: (2) Feedback Score: 2 reviews	Yes I plastigauged them and they are all within specs, I can rotate the crankshaft if I have the crank pulley bolt on and use a socket, but ive heard that you should be able to rotate it with your hands with little effort (doesnt make sense due to clearences)

11-12-2013, 04:15 PM	#5
alemuscmk Join Date: Jul 2013 Location: green forest, Arkansas Age: 29 Posts: 33 Trader Rating: (2) Feedback Score: 2 reviews	Its a little hard to start the rotation but once its free it will rotate uniformly, doesnt get hard at some points

11-19-2013, 10:33 AM	#7
Flyin_bryan Join Date: Nov 2013 Location: oklahoma Age: 55 Posts: 38 Trader Rating: (1) Feedback Score: 1 reviews	i agree you'll be fine, built engines for a couple of years for a living. Just my 2 cents.

11-19-2013, 10:40 AM	#8
alemuscmk Join Date: Jul 2013 Location: green forest, Arkansas Age: 29 Posts: 33 Trader Rating: (2) Feedback Score: 2 reviews	Alright thanks guys

12-19-2013, 04:13 AM	#9
dreek93sr20 Leaky Injector Join Date: Dec 2011 Location: Starkville, MS Age: 33 Posts: 113 Trader Rating: (1) Feedback Score: 1 reviews	I just put my sr back together after installing a built head and 272 cams...for some reason when i try to turn the engine by crank and socket it is extremely hard. Is it possible when i did the timing chain that I skipped a tooth or put the slack to the tensioner the wrong way???

12-21-2013, 09:19 AM	#10
alemuscmk Join Date: Jul 2013 Location: green forest, Arkansas Age: 29 Posts: 33 Trader Rating: (2) Feedback Score: 2 reviews	Check the gears, does sound like youve skipped a tooth