Which type of chain tensioner?
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Jay: if you do fit the safety collars, just make sure that you allow a little bit of give (when the engine is cold). If the collars are set when everything is cold to have the chains tight, when the engine heats up (and expands) the chains could be put under a lot of tension: increasing the risk of a failure somewhere, far and beyond that of the original tensioner failure risk.
Hope I'm not stating the obvious, but just leave a reasonable amount of give, and it'll be fine .
Hope I'm not stating the obvious, but just leave a reasonable amount of give, and it'll be fine .
DDK Member1243 07741 273865. Now booking Spring '24. Home of the RY Austin 7 Trophy's
Chain Tensioners
A lot of the problems with the early chain tensioner’s were from the idler sprocket not having any bearings, they were just steel to steel, they would often friction weld themselves to the shaft, the later ones had a bronze bearing and these proved to be more reliable.
Regards
Regards
John
1970 2.2E Coupe.
2004 996 GT3 mkII
2015 Skoda Octavia VRS TSI DSG.
2021 Toyota GR Yaris Circuit Pack
1970 2.2E Coupe.
2004 996 GT3 mkII
2015 Skoda Octavia VRS TSI DSG.
2021 Toyota GR Yaris Circuit Pack
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So is it quiet now Brendan? Did you replace the chains at the same time, or has this sorted it?
Sounds like a good job well done
Sounds like a good job well done
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1972 LHD 2.4T with '73 2.4T CIS motor - gone to a new DDK home
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1968 LHD 911L - was the Wife's but now in new hands
#1252
1972 LHD 2.4T with '73 2.4T CIS motor - gone to a new DDK home
1994 RHD 993 Carrera - gone!
1968 LHD 911L - was the Wife's but now in new hands
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If I want to check my tensioners, how should I do it ?
Should they push (fingers ?) or do they need levering ?
I am going to tie the chain back so it can't slip, but not too sure what to expect in terms of tension...
Anyone ?
Tim
Should they push (fingers ?) or do they need levering ?
I am going to tie the chain back so it can't slip, but not too sure what to expect in terms of tension...
Anyone ?
Tim
Tim Bennett
RHD Targa 2.2T EFI, Triumph ITB's, EDIS and Megasquirt.
"Old enough to know what's right and young enough not to choose it"
#1153
RHD Targa 2.2T EFI, Triumph ITB's, EDIS and Megasquirt.
"Old enough to know what's right and young enough not to choose it"
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Mike checked my new ones when they arrived & one was deffo not OK out of the bag ... both new tensioners were re-bled before being fittedMBEngineering wrote:HI just for my records , what is a STD tensioner???? and just for your records do not take it that the NEW (to you) , OLD type tensioner is A.OK to go out of the box/bag, you have a 50/50 chance it will need bleading, befor fitting.
regards mike
Last edited by hot66 on Sat May 05, 2007 9:52 pm, edited 1 time in total.
James
1973 911 2.4S
1993 964 C2
2010 987 Spyder
1973 MGB Roadster
Its not how fast you go, but how you go fast
1973 911 2.4S
1993 964 C2
2010 987 Spyder
1973 MGB Roadster
Its not how fast you go, but how you go fast
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One side OK, the otherside looks like this
I think I've found the source of the "noisy water pump like noise" that I reported some years ago !!
Q: Is the pivot replaceable ?
Q: If so, how does it remove ?
Cheers
Tim
I think I've found the source of the "noisy water pump like noise" that I reported some years ago !!
Q: Is the pivot replaceable ?
Q: If so, how does it remove ?
Cheers
Tim
Tim Bennett
RHD Targa 2.2T EFI, Triumph ITB's, EDIS and Megasquirt.
"Old enough to know what's right and young enough not to choose it"
#1153
RHD Targa 2.2T EFI, Triumph ITB's, EDIS and Megasquirt.
"Old enough to know what's right and young enough not to choose it"
#1153
Tim
see my post above, the idler arms need to be replaced as they do not have a bush in them. These are very unreliable.
see my post above, the idler arms need to be replaced as they do not have a bush in them. These are very unreliable.
RegardsA lot of the problems with the early chain tensioner’s were from the idler sprocket not having any bearings, they were just steel to steel, they would often friction weld themselves to the shaft, the later ones had a bronze bearing and these proved to be more reliable.
John
1970 2.2E Coupe.
2004 996 GT3 mkII
2015 Skoda Octavia VRS TSI DSG.
2021 Toyota GR Yaris Circuit Pack
1970 2.2E Coupe.
2004 996 GT3 mkII
2015 Skoda Octavia VRS TSI DSG.
2021 Toyota GR Yaris Circuit Pack
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- I need to get out more!
- Posts: 3302
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I agree, the idler arms should be replaced with bushed items. I'm trying hard not to turn this into a top-end rebuild !
Two chain ramps had one end missing. One ramp was missing entirely !
I think I've found the source of the noise !!
Ouch !
Two chain ramps had one end missing. One ramp was missing entirely !
I think I've found the source of the noise !!
Ouch !
Tim Bennett
RHD Targa 2.2T EFI, Triumph ITB's, EDIS and Megasquirt.
"Old enough to know what's right and young enough not to choose it"
#1153
RHD Targa 2.2T EFI, Triumph ITB's, EDIS and Megasquirt.
"Old enough to know what's right and young enough not to choose it"
#1153
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My understanding is that there are three types of tensioners. The original tensioner fitted to car which would have had a 901 part number and were not a sealed unit. Then there is the hydraulic tensioners with the oil feed as fitted to the later model cars and the third tensioner which was introduced with the Turbo model (has a 930 part number) as is a sealed unit with an improved design which if fitted with the safety collar is (IMO) the best option.
I'm not sure if you can still get the original 901 tensioner anymore and maybe this is why you are confused Mike as in effect we only have two types!
I'm not sure if you can still get the original 901 tensioner anymore and maybe this is why you are confused Mike as in effect we only have two types!
Brendan
1969 911T
2007 2.7 Boxster
Pray, hope and don't worry - Padre Pio
1969 911T
2007 2.7 Boxster
Pray, hope and don't worry - Padre Pio