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2,25 Petrol into S1 86" - flywheel/clutch/bellhouse ?


BrettPritt
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Hi folks,

same project, some problems:

2,25 L petrol 5brg instead of 2 L petrol into 86" S1 with original S1 gearbox.

2,25 l 5brg petrol with S3 flyhousing, S3 flywheel (8 bolts for fixing)

Early S2 bellhousing at the original S1 gearbox and now: Which clutch withdrawal mechanism ? The original from the S1 bellhousing or from the S2 bellhousing ?

Next question: Which clutch basket will fit at the S3 flywheel, because S3 flywheel has 3 dowel ( at 10.oo/2.oo and 6.oo o´clock) for locating the clutch basket, S1 clutch basket needs only 2 dowels (at 3.ooh and 9.ooh) for locating the clutch basket.

Does somebody know if the S2 clutch basket will fit an a S3 flywheel with 3 locating dowels?

Which clutch plate? S2 ?

Thanks in advance

Uli

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If you have the small layshaft bearing series 2 bellhousing you can use its own or the series 1 clutch release assembly. If you have a series 2a large bearing bellhousing with reducing sleeve or are using the 2a layshaft you must use the 2 a clutch release assembly because the series1 and 2 release housing does not clear the later layshaft bearing retainer. Note that later 2a's have an oil seal on the thrust release sleeve that seals against a smooth polished surface on the gearbox input shaft. The series1,2 and early 2a input shafts don't have this polished surface, they have an oil slinger scroll machined on to the shaft, so you must use the non sealed clutch release assembly on these unless you also fit the later sealed type primary gear set. The sealed type allows you to park the vehicle facing down a steep hill without flooding your clutch plate with gearbox oil. It also allows you to ford deep streams or watery mud holes without fear of the slinger type input shaft pumping carp into your gearbox, especially if your bellhousing rubber grommets are a bit old and tatty.

Not every manufacturer uses dowells to centre the clutch pressure plate (basket) determining that the bolts centralise it close enough. You can grind 0ne dowell off your flywheel and fit the later 9.5 inch diaphram clutch assembly, but it might pay to have the surface reground to match the larger diameter plate. You could also fit the earlier coil spring type clutch assembly to series 3 engine but they don't grip as well and are heavier to operate, and place more strain on the cross tube pins from the slave cylinder.

Bill.

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If you have the small layshaft bearing series 2 bellhousing you can use its own or the series 1 clutch release assembly. If you have a series 2a large bearing bellhousing with reducing sleeve or are using the 2a layshaft you must use the 2 a clutch release assembly because the series1 and 2 release housing does not clear the later layshaft bearing retainer. Note that later 2a's have an oil seal on the thrust release sleeve that seals against a smooth polished surface on the gearbox input shaft. The series1,2 and early 2a input shafts don't have this polished surface, they have an oil slinger scroll machined on to the shaft, so you must use the non sealed clutch release assembly on these unless you also fit the later sealed type primary gear set. The sealed type allows you to park the vehicle facing down a steep hill without flooding your clutch plate with gearbox oil. It also allows you to ford deep streams or watery mud holes without fear of the slinger type input shaft pumping carp into your gearbox, especially if your bellhousing rubber grommets are a bit old and tatty.

Not every manufacturer uses dowells to centre the clutch pressure plate (basket) determining that the bolts centralise it close enough. You can grind 0ne dowell off your flywheel and fit the later 9.5 inch diaphram clutch assembly, but it might pay to have the surface reground to match the larger diameter plate. You could also fit the earlier coil spring type clutch assembly to series 3 engine but they don't grip as well and are heavier to operate, and place more strain on the cross tube pins from the slave cylinder.

Bill.

9.5" clutch covers are 3 dowel so fit to a 5 bearing flywheel with no mods as thats what the 5 bearing engines run with.

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Hello folks,

searching now for nearly 3 hours in the www and not able to find the right partnumbers. I have to order tomorrow. I didn´t find a S2a partscatalogue with partsnumbers. The only partnumbers I´ve found was:

clutch plate S3 FRC 2297 ??

S2a 6pot 241mm (9.2 in) diameter diaphragm type clutch - is that the correct part ? - no partnumbers

S2a clutch all 4cyl. models single dry 230mm (9 in) diameter - is that the correct part? - no partnumbers

Who can give me the correct partnumbers I need for :

clutch cover/pressure plate (basket) partnumber:

clutch plate S3 or late S2a partnumber:

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