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fireing stroke #1033513 07/16/11 09:12 AM 07/16/11 09:12 AM
Joined: Jul 2005 Posts: 124 cumberland co. N.J. B BADDBOB OP member
BADDBOB OP member B Joined: Jul 2005 Posts: 124 cumberland co. N.J.	How do I determine when my 68 440 is on the fireing stroke for number 1 cylinder? when intake valve closes and the next up stroke should be compression stroke? my engine runs real lazy and overheats really quick..I look at the timing gears and after the intake valve closes and on the next up stroke the top gear mark is at 12 oclock instead of 6 oclock like my books all say..but if I turn the engine to get the cam gear mark at 6 oclock,then the exhaust valve is just closing..I need a smart guys help..what am I doing wrong??

Re: fireing stroke [Re: BADDBOB] #1033514 07/16/11 09:16 AM 07/16/11 09:16 AM
Joined: Aug 2005 Posts: 11,543 chicagoland,usa B buildanother I Live Here
buildanother I Live Here B Joined: Aug 2005 Posts: 11,543 chicagoland,usa	You're thinking too much, and the books are talking about engines other than mopar and chevy v-8's. Both dots at 12 oclock is firing cyl #1 on mopar and chev v-8's, BUT some other mfg's are different.

Re: fireing stroke [Re: buildanother] #1033515 07/16/11 09:22 AM 07/16/11 09:22 AM
Joined: Jul 2005 Posts: 124 cumberland co. N.J. B BADDBOB OP member
BADDBOB OP member B Joined: Jul 2005 Posts: 124 cumberland co. N.J.	thanks for the reply..the books are chiltons chrysler section and 68 original mechanics manual.. 6732181-1strideGTX002.edit.jpg (55 downloads)

Re: fireing stroke [Re: BADDBOB] #1033516 07/16/11 09:32 AM 07/16/11 09:32 AM
Joined: Jul 2005 Posts: 124 cumberland co. N.J. B BADDBOB OP member
BADDBOB OP member B Joined: Jul 2005 Posts: 124 cumberland co. N.J.	Am I getting the fireing stoke correct? how do I determine this as correct??

Re: fireing stroke [Re: BADDBOB] #1033517 07/16/11 09:35 AM 07/16/11 09:35 AM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Don't worry about what stroke the engine is on when installing the timing set unless you are degreeing the cam in then it will all take care of itself during the process. If installing according to the timing gear dots position will also take care of itself. After installation you will have to find TDC firing to install the distributor and run the spark plug wires prior to firing. Easily done by removing the number one plug and slowiy turning the engine over till you start to feel compression coming out of the spark plug hole. Then very slowly bring to about 5 degrees before TDC. Install intermediate shaft with the slot parallel with the engine center line and then install the distributor with the rotor pointing forward. Install the plug wires with the number one wire where the rotor is pointing and follow the firing order Counter clockwise around the cap.

Re: fireing stroke [Re: MoparforLife] #1033518 07/16/11 09:38 AM 07/16/11 09:38 AM
Joined: Jul 2005 Posts: 124 cumberland co. N.J. B BADDBOB OP member
BADDBOB OP member B Joined: Jul 2005 Posts: 124 cumberland co. N.J.	thanks for the info..should the timing marks both be at 12 o clock ? are my books wrong

Re: fireing stroke [Re: BADDBOB] #1033519 07/16/11 09:47 AM 07/16/11 09:47 AM
Joined: Jul 2005 Posts: 124 cumberland co. N.J. B BADDBOB OP member
BADDBOB OP member B Joined: Jul 2005 Posts: 124 cumberland co. N.J.	I guess I will try to mess with it again with confusion and dismay..

Re: fireing stroke [Re: BADDBOB] #1033520 07/16/11 09:52 AM 07/16/11 09:52 AM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: thanks for the info..should the timing marks both be at 12 o clock ? are my books wrong Install with crank sprocket at 12 and the cam at 6. Makes it easier to line up straight with the shorter distance between. Think about it: then turn the engine over 1 full turn and you will now be at crank at 12 and the cam at 12. Crank shaft makes 2 revolutions to every 1 of the cam shaft

Re: fireing stroke [Re: MoparforLife] #1033521 07/16/11 09:58 AM 07/16/11 09:58 AM
Joined: Jan 2003 Posts: 4,720 Moved to N.E. Tennessee GomangoCuda master
GomangoCuda master Joined: Jan 2003 Posts: 4,720 Moved to N.E. Tennessee	Quote: Quote: thanks for the info..should the timing marks both be at 12 o clock ? are my books wrong Install with crank sprocket at 12 and the cam at 6. Makes it easier to line up straight with the shorter distance between. Think about it: then turn the engine over 1 full turn and you will now be at crank at 12 and the cam at 12. Crank shaft makes 2 revolutions to every 1 of the cam shaft Exactly what I was going to say but I got treed. In theory, there is no difference between theory and practice. In practice, there is.

Re: fireing stroke [Re: MoparforLife] #1033522 07/16/11 09:59 AM 07/16/11 09:59 AM
Joined: Jul 2005 Posts: 124 cumberland co. N.J. B BADDBOB OP member
BADDBOB OP member B Joined: Jul 2005 Posts: 124 cumberland co. N.J.	that,s the info I needed..thanks smart guy

Re: fireing stroke [Re: BADDBOB] #1033523 07/16/11 10:09 AM 07/16/11 10:09 AM
Joined: Jan 2003 Posts: 75,005 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,005 U.S.S.A.	Quote: thanks for the info..should the timing marks both be at 12 o clock ? are my books wrong No they are not wrong , you line up the dots on initial install to get the chain and gears installing correctly, this position is the compression stoke/firing of cylinder #6 . BUT you are ASSuMeing the the timing set is correct , if your engine is having issues you should probably get a degree wheel on there and make sure the chain set is right .

Re: fireing stroke [Re: BADDBOB] #1033524 07/16/11 10:13 AM 07/16/11 10:13 AM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: that,s the info I needed..thanks smart guy Like I said in the post above 12 & 12 is actually the same as 12 crank and 6 cam. It is easier to get a straight line with the short distance. Comes out the same. 6 of one half a dozen of the other.

Re: fireing stroke [Re: MoparforLife] #1033525 07/16/11 12:30 PM 07/16/11 12:30 PM
Joined: Jul 2005 Posts: 124 cumberland co. N.J. B BADDBOB OP member
BADDBOB OP member B Joined: Jul 2005 Posts: 124 cumberland co. N.J.	thanks guys..and thanks to moparts for the forum..update to follow

Re: fireing stroke [Re: BADDBOB] #1033526 07/16/11 05:03 PM 07/16/11 05:03 PM
Joined: Jan 2003 Posts: 6,591 Canton, Ohio S Sport440 master
Sport440 master S Joined: Jan 2003 Posts: 6,591 Canton, Ohio	Quote: thanks for the info..should the timing marks both be at 12 o clock ? are my books wrong Your books are correct. The books show the cam installed ATDC between the exhaust and intake overlap strokes. Not the top of the compression stroke/fire. Lots like yourself think the piston is at the ATDC of the comp stroke with the cranks mark at 12 and the cam at 6 lined up, its not.

Re: fireing stroke [Re: Sport440] #1033527 07/16/11 05:17 PM 07/16/11 05:17 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: Lots like yourself think the piston is at the ATDC of the comp stroke with the cranks mark at 12 and the cam at 6 lined up, its not. Right number 6 is. Either way don't worry about where the piston is when you install the chain and sprockets. It will take care of itself. Forget that the pistons are even there till you install the intermediate shaft and distributor.

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