#1 @ TDC on compression stroke?

302 LX Eric · 09-23-2003, 01:17 PM

Hey guys, I'm sure this is an easy question to answer, but I want to make sure I get it right the first time...

I've installed and degreed in my new Anderson cam, and am about to bolt on the lower intake, et al. I want to make sure that I've got the #1 piston at TDC on the compression stroke. (I lined up the timing marks on the cam sproket and crank gear while double checking that #1 was at TDC via a dial indicator on #1 piston.) However, I'm just not sure if it's on the exhaust stroke or the compression stroke. I guess if I drop in the distributor and point it to #1 and it doesn't fire that I could just rotate it 180*, but I would rather be right on the first time.

I also thought that I could just turn over the motor by hand and watch the #1 lifters until I would see the intake valve open, then close, then on the top of that stroke (where the timing marks line-up on the timing chain set) I would be at TDC for the compression stroke...but then I began to wonder if turning the engine over in a clockwise fashion is the same way that it turns when it fires?

So, in which direction does the engine turn if I'm standing at the front of the car looking at the engine crank?

Thanks in advance!
E

Dark_5.0 · 09-23-2003, 04:19 PM

It turns clockwise.

Put your finger over the #1 spark plug hole and turn the motor over by hand till you feel the compression.

09-23-2003, 04:19 PM	#2
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	It turns clockwise. Put your finger over the #1 spark plug hole and turn the motor over by hand till you feel the compression. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
increasing compression ratio	84LX89GT	Windsor Power	6	11-14-2003 10:40 AM
#1-#8 cylinders zero compression. WTF	Dark_5.0	Windsor Power	9	09-22-2003 10:37 AM
Speed Secret # 3	jim_howard_pdx	Windsor Power	13	11-09-2002 10:35 AM
Compression problem?	96Saleen	Modular Madness	1	10-22-2001 01:14 PM
high or low compression engines	Mustangboy89	Windsor Power	6	01-26-2001 03:04 PM

09-23-2003, 01:17 PM	#1
302 LX Eric or '331 LX Eric' Join Date: Jan 1999 Location: Columbus, Ohio Posts: 2,142	#1 @ TDC on compression stroke? Hey guys, I'm sure this is an easy question to answer, but I want to make sure I get it right the first time... I've installed and degreed in my new Anderson cam, and am about to bolt on the lower intake, et al. I want to make sure that I've got the #1 piston at TDC on the compression stroke. (I lined up the timing marks on the cam sproket and crank gear while double checking that #1 was at TDC via a dial indicator on #1 piston.) However, I'm just not sure if it's on the exhaust stroke or the compression stroke. I guess if I drop in the distributor and point it to #1 and it doesn't fire that I could just rotate it 180*, but I would rather be right on the first time. I also thought that I could just turn over the motor by hand and watch the #1 lifters until I would see the intake valve open, then close, then on the top of that stroke (where the timing marks line-up on the timing chain set) I would be at TDC for the compression stroke...but then I began to wonder if turning the engine over in a clockwise fashion is the same way that it turns when it fires? So, in which direction does the engine turn if I'm standing at the front of the car looking at the engine crank? Thanks in advance! E __________________ 1991 5.0 LX Coupe - 40,750 miles 331 cu. in. / Tremec 3550 / BFG Drag Radials 12.22 @ 114.31 mph - w/1.89 60'