Do not buy March 2 piece pulley set!!!
03-23-2007, 12:34 PM
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Do not buy March 2 piece pulley set!!! Alright, just a warning for all LT1 owners. The March 2 piece pulley set will break your timing chain. Yes, it will break your timing chain. It has to do with the fact that there is no balancer or something...I know this is true, because i had the march set on my car and within 2 months my timing chain broke. At first, i thought my timing chain was old and maybe it just broke...So, i never thought about the march. Then after my car getting fixed, my pulley was a little bent, so i couldn't re-use it. I had my stock one back on and the car ran fine. Well, i took the March UD pulley back to where i bought it to see if they would replace it. (i explained the situation) They did and i got a new March UD pulley. (this was about 6months later) I never thought about taking the pulley back until a buddy of mine said i probably could...Anyway, i had it put on and within 2months of it being on, boom, my timing chain broke again. I'm telling you guys, whether it makes sense or not, the March 2 piece UD pulley set causes your timing chain to break...
Do not buy it and F*ck you March.
Do not buy it and F*ck you March.
03-23-2007, 12:42 PM
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so your saying there is actually an UD pulley kit that takes the balancer off the engine, well its a no brainer why it broke then the purpose of the harmonic balancer is to take harmonics out of the crankshaft which is then transfered to the timing chain and cam
03-23-2007, 01:25 PM
#4
I might be missing something here but the March UD pulley set is supposed to be a piggy back style where it still retains the stock balancer...If you used it with just the pulley and took off your balancer, you caused the problem, not March...I'm sure other March users will chime in...I don't know first hand because I have an ASP pulley/balancer combo...But I thought March was a "sandwich" style system...
--Alan
--Alan
03-23-2007, 01:47 PM
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Originally Posted by plaf713
yeah, you are supposed to take the pully and bolt it in between the harmonic balancer and the crank hub.
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03-23-2007, 04:28 PM
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do people know how to read directions? If that is the case then no wonder the chain broke. ABA383 how do you like the ASP balancer/pulley combination? I was planning on purchasing one when i do a rebuild.
03-23-2007, 04:44 PM
#12
Originally Posted by rbobryk20
do people know how to read directions? If that is the case then no wonder the chain broke. ABA383 how do you like the ASP balancer/pulley combination? I was planning on purchasing one when i do a rebuild.
--Alan
03-23-2007, 04:55 PM
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I have had my March 2 piece UD pulley on my for about 3 years.
Here is a pic for the original poster. This is how its supposed to look after you finish installing the march kit
The balancer is there to take the end play out of the crank without it the crank hub would move up and down causing the chain to unstretch then stretch and again and again, that causes metal fatigue and BAM! broken chain
Here is a pic for the original poster. This is how its supposed to look after you finish installing the march kit
The balancer is there to take the end play out of the crank without it the crank hub would move up and down causing the chain to unstretch then stretch and again and again, that causes metal fatigue and BAM! broken chain
03-23-2007, 05:06 PM
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Originally Posted by Captainofiron
I have had my March 2 piece UD pulley on my for about 3 years.
Here is a pic for the original poster. This is how its supposed to look after you finish installing the march kit
The balancer is there to take the end play out of the crank without it the crank hub would move up and down causing the chain to unstretch then stretch and again and again, that causes metal fatigue and BAM! broken chain
Here is a pic for the original poster. This is how its supposed to look after you finish installing the march kit
The balancer is there to take the end play out of the crank without it the crank hub would move up and down causing the chain to unstretch then stretch and again and again, that causes metal fatigue and BAM! broken chain
how do you like your MSD opti
03-23-2007, 05:27 PM
#16
Originally Posted by Z 2 8
Alright, just a warning for all LT1 owners. The March 2 piece pulley set will break your timing chain. Yes, it will break your timing chain. It has to do with the fact that there is no balancer or something...I know this is true, because i had the march set on my car and within 2 months my timing chain broke. At first, i thought my timing chain was old and maybe it just broke...So, i never thought about the march. Then after my car getting fixed, my pulley was a little bent, so i couldn't re-use it. I had my stock one back on and the car ran fine. Well, i took the March UD pulley back to where i bought it to see if they would replace it. (i explained the situation) They did and i got a new March UD pulley. (this was about 6months later) I never thought about taking the pulley back until a buddy of mine said i probably could...Anyway, i had it put on and within 2months of it being on, boom, my timing chain broke again. I'm telling you guys, whether it makes sense or not, the March 2 piece UD pulley set causes your timing chain to break...
Do not buy it and F*ck you March.
Do not buy it and F*ck you March.
You broke your own timing chain by not not reusing the balancer with the March pulley. I feel so bad for you. 
03-23-2007, 06:04 PM
#17
Let's not flame Z 2 8, he made a mistake. We've all made mistakes, great and small. Sometimes, it's the best teacher.
So dude, did you mount the stock damper on the March UD pulley? It looks as if you didn't, you're lucky you didn't cause more damage.
So dude, did you mount the stock damper on the March UD pulley? It looks as if you didn't, you're lucky you didn't cause more damage.
03-23-2007, 06:31 PM
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Harmonic balancers are hugely important for taking harmonics out....but on the LT1 motors - isn't it also a contributing member to the actual rotational balancing of the engine?..like the 400 small block chevys ? I know the flywheel/flexplate is part of the balancing on LT1's- as they have a weight stuck to them. Guess I'm assuming the balancer is to, since it is on the 400's...haven't actually looked that closely to see if it is offset weighted though..
03-23-2007, 06:58 PM
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Originally Posted by onephatZ28
how do you like your MSD optiOnly problem was getting that stupid oring to sit correctly.
03-23-2007, 07:01 PM
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Originally Posted by KTM
Harmonic balancers are hugely important for taking harmonics out....but on the LT1 motors - isn't it also a contributing member to the actual rotational balancing of the engine?..like the 400 small block chevys ? I know the flywheel/flexplate is part of the balancing on LT1's- as they have a weight stuck to them. Guess I'm assuming the balancer is to, since it is on the 400's...haven't actually looked that closely to see if it is offset weighted though..