plate behind crankshaft sprocket

[Slow95gsx]

I finally got my 6 bolt built up and went to put the timing necc. together and I dont know which way this plate goes on the crankshaft. It fits either way but there is a huge difference in where the timing marks are when reversed. Im stuck.

 

[m1nd64m3]

Are you trying to put the plate for the 7-bolt crank sensor onto a 6-bolt? If thats the case you dont need it because there is no crank sensor on a 6-bolt

 

[40oz]

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[Slow95gsx]

thanks 40oz thats what i needed

 

[Wing0tj]

so if that plate got reversed and the timing was set like if should be would that be off enough to bend valves?

 

[killab443]

Its possible to if you continuously tryed to start the car/ I put the plate on backwards myself but never bent any valves.

 

[Wing0tj]

well I put it on backwards, and the car started... and ran like shit... let it run for like 2 min then shut it off it was after a bottme end rebuild so I wasnt sure what it was. then I figured it out and fixed it car started right up... vacuum was low tho... and with a bottom end rebuilt I knew it wasnt rings, I drove the car for like 2 weeks, it was pretty good, I was on break in period so I never got on it... but then today after not driving for 3 days it wont start... dont have a comp tester hany but I think its valves... which sucks

 

[killab443]

That does suck. Keep us updated on the compression test

 

[Turbo Talon DL]

So, you ARE talking about that plate with the timing mark for the crank? On a six bolt, it only goes on one way, the RIGHT WAY. Actually, it has a little notch that allows it to go onto the crank, which also has a notch. I have low vacuum as well, but good compression. with 200+miles now, the engine works reasonably well.

 

[1fast97gsx]

Actually the plate will go on 2 ways on a 6 bolt and only 1 is correct. The way I do it is I bring cylinders 1 and 4 to tdc and then slide the plate on 1 way and see if the tab on the oil pump lines up with the notch in the plate ... if it doesn't then flip the plate and take another look. It will either be right on or way off.

The other way to do it is as stated by looking at the flange it has on the plate. It will however physically slide onto the crank 2 ways.

 

[Slow95gsx]

Actually the plate will go on 2 ways on a 6 bolt and only 1 is correct. The way I do it is I bring cylinders 1 and 4 to tdc and then slide the plate on 1 way and see if the tab on the oil pump lines up with the notch in the plate ... if it doesn't then flip the plate and take another look. It will either be right on or way off.

The other way to do it is as stated by looking at the flange it has on the plate. It will however physically slide onto the crank 2 ways.

....

 

[Turbo Talon DL]

Actually the plate will go on 2 ways on a 6 bolt and only 1 is correct. The way I do it is I bring cylinders 1 and 4 to tdc and then slide the plate on 1 way and see if the tab on the oil pump lines up with the notch in the plate ... if it doesn't then flip the plate and take another look. It will either be right on or way off.

The other way to do it is as stated by looking at the flange it has on the plate. It will however physically slide onto the crank 2 ways.

http://www.slowboyracing.com/more.php?id=1931& <<<<<<<------- Six bolt crank plate, as I said earlier. I even tried putting this on the wrong way, just to make sure that even I of all people couldnt ruin it or mess it up. But yeah, THIS only goes on one way.

 

[LessIsMore]

Flipping the plate will result in two different alignments of the timing notch.

If you look at the pitcure you posted, the notch is at 10o'clock, flip it around and the notch is at 11o'clock. I don't see whats so how hard to understand about that.


B16, look closely at the plate. There should be an imprint left on it from the balance shaft spocket. Face this side outwards and you're good to go. This is assuming your plate isn't new.

If it is new you will have turn the crank so 1+4 are TDC and align the notch with the front case, as 1fast97gsx said.

 

[Wing0tj]

you can put on onbackwards... I did... and the car started...ran like shit so I found out it was the problem,fixed it, drove car for 500 miles... and all the sudden no compression from bent valves I dont know how it worked long as it did and then died but yea dont be dumb and put it on the wrong way... now I get to buy another new head... o well if anyone has a decent head they wanna sell me Im game.

 

[Wing0tj]

well I pulled the head, and all 8 exhaust valves are bent due to the timing belt jumping, from what I can guess, when I flipped that plate it bent the(a) exhaust valve and eventually that cause the belt to slip due to stress or something

 

[boostedinaz]

Yes, the plate can go on two different ways. One bends the valves the other won't. My buddy went through a fresh head because of this.

As it has already been stated bring the #1 piston to TDC and make sure the tab points at the corresponding timing tab.

 

[Wing0tj]

ya I def will from now on, lesson learned,

 

[GreatEagle]

So you are saying that if the plate is backward the car will run like crap? Is this due to not being at TDC? I just rebuilt my engine and put the plate on. I did not pay attention to the way it was put on but my mark is at where it is suppose to be when it is TDC I think but my car starts up fine. I really don't want to yank my engine to find out. Is there any sure way to find out without yanking the engine or bending valves?

 

[boostedinaz]

So you are saying that if the plate is backward the car will run like crap? Is this due to not being at TDC? I just rebuilt my engine and put the plate on. I did not pay attention to the way it was put on but my mark is at where it is suppose to be when it is TDC I think but my car starts up fine. I really don't want to yank my engine to find out. Is there any sure way to find out without yanking the engine or bending valves?

If the plate is on backwards you are so out of time it isn't even funny. Ask your valves and they well tell you a tale of a great battle between then and the notoriously strong piston gang. Once a battle begins it is all down hill for the valves. Even though they have the numbers advantage they will make a valiant effort, but in the end there necks will be broken and they will be rendered useless.

Before you crank it over make sure that plate is on correct if not then you get the joys of rebuilding your head.

 

[ZachM31]

"Ask your valves and they well tell you a tale of a great battle between then and the notoriously strong piston gang. Once a battle begins it is all down hill for the valves. Even though they have the numbers advantage they will make a valiant effort, but in the end there necks will be broken and they will be rendered useless."

haha thats good... if only some things could talk...

 

[houstonECLIPSE]

when i purchased this plate new from the dealer there was a white mark to show you that side was to face out. if you are reusing it just look at the imprint on each side of the plate. one is the crank sprocket and the other is the balance shaft sprocket.

lupe