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ST170 Cambelt replace - Update

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Old 11-10-2012 | 12:13 PM
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Default ST170 Cambelt replace - Update

Last year I bought the wife a 52 plate 65,000 mile 5 door ST170

A year later it was now due its Cambelt replacing

Seeing as I work for myself MOT, service and repair I finally got round to doing it (own cars always take a back seat - lol)

Once stripped I found that the cambelt timing on the "factory fitted" original belt was out on the Inlet cam by about 1/2 a tooth but this could have been due to wear/stretch in the belt.

Used a Dayco kit KTB408 which has 1 x tensioner 1 x idler and the belt

Easy to time up engine and not a difficult engine to actually get to the belt etc

After replacing the kit the engine is now quieter and a small rattle has also now gone (poss worn tensioner) and all is well with the drive and power etc

So all of you who may be cautious of doing the timing on the variable inlet cam pulley I can say it is no more difficult than a "normal Zetec type" engine and in fact it is slightly easier as the crank pulley is on a woodruff key and not free spinning.

Last edited by RS2000CUSTOM; 11-10-2012 at 12:14 PM.
Old 11-10-2012 | 11:33 PM
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Originally Posted by RS2000CUSTOM
Last year I bought the wife a 52 plate 65,000 mile 5 door ST170

A year later it was now due its Cambelt replacing

Seeing as I work for myself MOT, service and repair I finally got round to doing it (own cars always take a back seat - lol)

Once stripped I found that the cambelt timing on the "factory fitted" original belt was out on the Inlet cam by about 1/2 a tooth but this could have been due to wear/stretch in the belt.

Used a Dayco kit KTB408 which has 1 x tensioner 1 x idler and the belt

Easy to time up engine and not a difficult engine to actually get to the belt etc

After replacing the kit the engine is now quieter and a small rattle has also now gone (poss worn tensioner) and all is well with the drive and power etc

So all of you who may be cautious of doing the timing on the variable inlet cam pulley I can say it is no more difficult than a "normal Zetec type" engine and in fact it is slightly easier as the crank pulley is on a woodruff key and not free spinning.
Its all a load of rubbish mate people see VVC and s**t them selfs, can get them done in a hour at work with the air tools as said its just a old zetec engine nothing more! you will prob find the intake cam was out due to a slight bit of free play in the pully because of the loss of oil pressure as the engine stopped
Old 11-10-2012 | 11:39 PM
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did you loosen off the two cam pulleys and lock the cams and crank in place? mines is going to get done in a few weeks hopefully and ill be doing it, once you had the belt on and tensioned do you just tighten the bolts on cam pulleys and spin engine over by hand and recheck the timing??
Old 12-10-2012 | 12:13 AM
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Originally Posted by JOHNDQ

you will prob find the intake cam was out due to a slight bit of free play in the pully because of the loss of oil pressure as the engine stopped
Most likely was due to the pressure dropping but I couldnt move the VVC unit any further clockwise once belt removed so it must have been in the "off" position but at least I know it is spot on now !

Originally Posted by shanel

did you loosen off the two cam pulleys (1) and lock the cams (2) and crank in place (3)?

once you had the belt on and tensioned do you just tighten the bolts on cam pulleys (4) and spin engine over by hand and recheck the timing (5) ??
1/ Yes

2/ Yes

3/ Yes

4/ Yes

5/ Yes

lol

Last edited by RS2000CUSTOM; 12-10-2012 at 12:19 AM.
Old 12-10-2012 | 01:24 AM
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I changed mine as per a normal 2.0 zetec non vvc cambelt change. no issues either.
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