PISTON SINGLE 1098cc MINI +0.060
P20397-60

£53.27 exc vat

£63.92 inc vat

In stockIn stock
This piston for 1098cc engines was designed with 4 rings. The top three compression rings are .0625" thick and the bottom oil ring is .1575" thick.

Pin height in this piston design is 2.2855", this results in a compression of 8.5:1 in most ...

£53.27 exc vat

£63.92 inc vat

In stockIn stock

Recommended usage 4 x P20397-60 to fit one mini.

People also bought products

3 compression ring @ 0.625" and single one piece oil ring 0.125 as per original 998 pre A plus and 1098cc versions inc morris minor and sprite range. Also available is a high grade ring set c-STN99-20 with 3 piece oil ring

ACL Race Bearings



ACL Race series bearings are precision manufactured to a wall thickness of ±0.0040mm giving engine builders close control of vertical oil clearance.

What is the purpose of ACL Race series bearings?
...

Proper timing of the camshaft is very important and while it is easy and nice to do it with a precise adjustable cam sprocket it is also cheap to do it with offset cam keys. 1 or 2 degrees difference in cam timing can make a difference in performance...

Genuine Mini Spares camshaft for use with 1.5 rockers if preferred--below 5000rpm should produce more power than the 286 profile. Close to MDM274



Cam Timing

107 degrees at full lift on No1 inlet

SEAT...

These have been specially manufactured for Minispares.

Sold individually with rings and pin complete

these are the preferred pistons of many racers in the 998 class

Ringsets are available as R43240-60

Complete fixing kit for a water pump, includes replacement silicone bypass hose, clips, superseal gasket, replacement bolts and washers.

Mini Spares cam follower with original convex bottom Radii as used by BMC/Rover and made by Clanceys but less the oil hole. Using Clancey drawings and to our design for better cam performance and lift we have made the push rod recess deeper for stabi...

ESPECIALLY FOR MINIS

This 20-50w semi synthetic oil is produced especially for minis where it needs to lubricate both engine and gearbox parts giving the neccessary coating and protection. Semi synthetic has a long life to 100c with maximum ...

Mahle was Vandervell bearings 1.064" 27.05mm wide mains for the late 850cc plus all 997/998/1100cc at 20 thou oversize. Early 850 mains were VP592 and 1.185" 30.10mm wide...Quantity required-1 set.

Replace with new camshaft,it's almost too easy to overlook during a rebuild. Camshaft bearings are pressed into the block and thus are usually done by a machine shop. You would not rebuild an engine without replacing the rod bearings, so why not the ...

Woodruff key for the end of the crankshaft to locate the lower timing chain gear and WKN505 is for the camshaft key to hold the larger timing gear.

Brilliant all round performance road cam. Smooth idle, pulls from around 1,200 RPM. Small gain in low end, big increase in med and top end. Unbeatable for genuine fast road use. Rev band 1,200 to 6,500/7,000 rpm. Intake duration is 260 degrees, exh...

Converted into a non melting type grease.Favoured by proffessionals for camshaft,lobes and lifter,and any valvetrain to stop scuffing on start up. Also useful for oil pumps to stop drain back on start up

Standard size crankshaft washers as a set of four, fits 998 and 1100cc.

Lightened cam gear duplex timing gear and chain set. Not recommended for race/rally applications. approx 69-70g 9% lighter

General: Camshaft Drive Systems


For highly tuned engines always use steel duplex as cast is nowhere as st...

Standard weight, 44.00grams, follower with oil drain hole. Always check for wear and replace whenever a new camshaft is fitted. These are manufactured by the supplier to AE Hepolite the original engine components manufacturer and should be coated wit...

Original short pin drive oil pump for all Pre A Plus minis with 850/998/1100cc engines except autos and others with star drive or the later slot drive pumps as found on A Plus blocks.

Convex type core plug at 41.4mm for all early A series blocks up to A plus.

4 required per engine-these are known as the flat type wher the centre has to be pressed in so the convex plug spreads out. The Cooper S althouh same size was a cup ...

Mini Spares own Universal gasket set.

This engine block gasket set fits all manual blocks and include rubber tappet chest covers and bolt seals, also including A plus and Pre A Plus timing gear and cover gaskets. For the equivalent gasket se...

ACL Main bearings for the crankshaft as preferred by performance engine builders standard size

Sintered copper lead, lead plated,steel backed

Nominal Composition

Copper 74%

Lead 24%

Tin 2%