Ask an Expert..... » Balance belt snapped???

#1 by Hornstar , Wed Jul 15, 2015 7:45 pm

Hmmmmmmmm me thinks I won't be going far for a week or so!

We went to look at a new house out in Buntingford and whilst trundling along one of many small country lanes doing no more than 25mph, there was a sudden noise from the front and then total loss of power.

Spot the difference!!

Gutted!

#2 by Hornstar , Wed Jul 15, 2015 7:47 pm

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#3 by paulw , Wed Jul 15, 2015 7:55 pm

Hmm , devajue , been there done that mate back in 2011! in fact done it twice in a couple of months!!

#4 by George , Wed Jul 15, 2015 8:05 pm

Gutted for you mate hope its not to much to put rigth

#5 by Jon Grimsby , Wed Jul 15, 2015 8:10 pm

Damn, so the balance belt snapped and took out the timing Gutted for you mate. Good news from what ive read is there will not be any bottom end damage, hope I'm not wrong on that one.

#6 by 123hotchef , Wed Jul 15, 2015 8:25 pm

yeh the rockers are made to break and not damage valves ect

#7 by Alan G , Wed Jul 15, 2015 8:26 pm

If you want to try just replacing the rocker shaft I have one spare. £30.00 + postage. Has shaft, springs & all 8 rockers. Valves should be ok as the rocker is designes to break when the belt goes. Worth trying rather than stripping the head of to find its ok.

#8 by 123hotchef , Wed Jul 15, 2015 8:40 pm

and when ya put it all back together leave the balance belt off Pete stay under 3K rpm and u wont notice the difference

#9 by Major Malfunction , Wed Jul 15, 2015 9:36 pm

What causes this belt to snap,and why don't we disconnect it and drive under 3000rpm,we discard the EGR valve why not advise the top balance belt

#10 by Major Malfunction , Wed Jul 15, 2015 9:36 pm

What causes this belt to snap,and why don't we disconnect it and drive under 3000rpm,we discard the EGR valve why not advise the top balance belt

#11 by 123hotchef , Wed Jul 15, 2015 9:36 pm

many of us do remove and leave it off mate

#12 by 123hotchef , Wed Jul 15, 2015 9:37 pm

not sure what causes them to snap dodgy balance shafts dodgy tensioner wear and tear on belt itself why does a cam belt snap?

#13 by Major Malfunction , Wed Jul 15, 2015 9:40 pm

Agree but for older engines why not just discard something that can cause a lot of damage.

#14 by 123hotchef , Wed Jul 15, 2015 9:41 pm

we do mate we do

#15 by Major Malfunction , Wed Jul 15, 2015 9:49 pm

To be honest I have seen all about the EGR but since I have been on the forum I have never or just not recognised it seen a thread saying advise on a K74 to remove top balance belt. If there is it needs pushing to help forum readers as it is now on my to do list.

#16 by 123hotchef , Wed Jul 15, 2015 9:51 pm

search the forum mate u will see a fair few members running without them

I was planning on cutting mine off of truck 2 but i dont know if i can reach it without stripping it down and belt and due a change for a while

#17 by Major Malfunction , Wed Jul 15, 2015 9:58 pm

Me thinks a new thread stating all the advisories to do on a K74 is required,to help stop any blown engines. Chef you is the guy I vote on this as my internet is like donkey to a fast electric train in Wales..

#18 by Major Malfunction , Wed Jul 15, 2015 10:08 pm

Dare I say it be called a do's and don't's of a K74.

#19 by yozer13 , Wed Jul 15, 2015 10:17 pm

so what happens if you go over 3k sometimes i do if i drop the hammer to over take or something ?

#20 by Hornstar , Wed Jul 15, 2015 10:20 pm

Quote: yozer13 wrote in post #19
so what happens if you go over 3k sometimes i do if i drop the hammer to over take or something ?

I was going to ask the same question? If I'm motorway driving & need to overtake?

#21 by Major Malfunction , Wed Jul 15, 2015 10:20 pm

I assume it rattles a lot

#22 by 123hotchef , Wed Jul 15, 2015 10:20 pm

u will get lots of vibrations mate not nice

#23 by 123hotchef , Wed Jul 15, 2015 10:21 pm

mine dont go over 3k any way

#24 by Hornstar , Wed Jul 15, 2015 10:22 pm

Quote: Alan G wrote in post #7
If you want to try just replacing the rocker shaft I have one spare. £30.00 + postage. Has shaft, springs & all 8 rockers. Valves should be ok as the rocker is designes to break when the belt goes. Worth trying rather than stripping the head of to find its ok.

Sounds perfect to me, can you PM me your PayPal or bank details please, thank you

#25 by Major Malfunction , Wed Jul 15, 2015 10:24 pm

Has anyone else seen the advice of the removal of said belt.

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Balance belt snapped???

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