PISTON SET 998 FLAT TOP CIRCLIP TYPE +40 OVERSIZE
ADU3490-40

£152.00 exc vat

£182.40 inc vat

In stockIn stock
998cc flat top 3 ring circlip type piston set as fitted to early A plus to replace 4 ring set type. Gave 10.3 to1 CR and is a good alternative to use on any 998 with circlip type pistons. Replaced 4 ring(3 ring and scraper) P20754 from Hepolite 1980o...

£152.00 exc vat

£182.40 inc vat

In stockIn stock

Recommended usage 1 x ADU3490-40 to fit one mini.

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998cc flat top 3 ring circlip type piston set as fitted to early A plus to replace 4 ring set type. Gave 10.3 to1 CR and is a good alternative to use on any 998 with circlip type pistons. Replaced 4 ring(3 ring and scraper) P20754 from Hepolite 1980...

998cc flat top 3 ring circlip type piston set as fitted to early A plus to replace 4 ring set type. Gave 10.3 to 1 CR and is a good alternative to use on any 998 with circlip type pistons. Replaced 4 ring (3 ring and scraper) P20754 from Hepolite 198...

998cc flat top 3 ring circlip type piston set as fitted to early A plus to replace 4 ring set type. Gave 10.3 to1 CR and is a good alternative to use on any 998 with circlip type pistons. Replaced 4 ring(3 ring and scraper) P20754 from Hepolite 1980o...

3mm OIL RING with compression ring size .0591" (1.5mm)and one piece oil ring .1181" (3mm)on p21253 pistons giving 9.7cr on 1275cc. std ring size

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Low drag 1275 piston standard size 2.780 plus 20 thou oversize(Rings included).

This piston has a possible compression ratio of 10.3:1 as fitted to Cooper RSP 1990.

The best performance 1275 pistons are C-STN100 range which have 9.7...

Available at the moment but they sporadically become unavailable. Mini Spares have also had a batch of plus 60s specially commissioned to us for Grass trackers and racers. sold individually with rings and pin complete.

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3 OF 0.625 COMPRESSION RINGS AND .1575 OIL CONTROL RING.AT PLUS 40 OVERSIZE FOR P20773 pistons

These rings are +20 oversize with 0.59" compression rings and 0.1181" oil ring fo 998cc

3 OF 0.625 COMPRESSION RINGS AND .1575 OIL CONTROL RING.

These Piston rings are +40 oversize with 0.59" compression rings and 0.1181" oil ring fo 998cc

Low drag 1275 piston standard size 2.780 plus 40 thou oversize(Rings included).

This piston has a possible compression ratio of 10.3:1 as fitted to Cooper RSP 1990.Engine then becomes 1310cc

Current pistons differ from the 60s origi...

40 thou oversize low drag slipper type pistons for modern day compression ratios and unleaded fuel.

Typically installation will result in a minimum 8.8:1 compression ratio but on some pre 1984 Metro versions it was higher.

Current...

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You should replace the camshaft bearings every time the block goes to the machine shop. These bearings fit all late model 1275cc blocks (the ones without tappet covers on the back) It's almost too simple and thus often overlooked during a rebuild. Ca...