Page 24 of Formula Ford Parts by BAT Inc.

bat your headquarters for ff1600 ff2000 23 illustration part wb parts view hewland mk8-mk9 transaxle wb parts list side plate mk9 rh side plate mk9 lh stub axle mk9 rh stub axle mk9 lh stub axle seal stub axle bearing stub axle circlip differential mk8-9 ring pinion 8:31 ring pinion 9:31 ring pinion 10:31 ring gear bolt washer nut-side cover washer cross shaft spider gear dished washer side gear flat washer roll pin 1 2 3 4 5 6 8 11 12 wb1 wb2 wb3 wb4 wb5 wb6 wb8 wb11 w831h w931h w1031h wb13 wa31 wb14 wb15 wb16 wb17 wb18 wb19 wb20 wb21 2 12 11 4 7 6 10 18 21 16 20 9 8 13 19 13a 20 17 18 17 5 1 13 13a 14 15 16 17 18 19 20 21 gearbox tech info the mark 4-9 hewland and webster gearboxes are quite rugged for their size if properly set up the unit should be completely trouble free when used with a ff1600 these gearboxes also perform well in s2000 service but because of the extra torque generated by the 2000 engine some extra care is necessary since the gearbox does not bolt directly to the engine but to an adaptor which attaches to the engine a spacer or bobbin is used to correctly space the clutch release bearing most cars use a standard bellhousing adaptor which is 2.15 thick some cars use special bellhousing adaptors which are thicker and thus a special long input shaft and long bobbin is required racing type f-3 clutches will also require a longer bobbin because of pressure plate spring height differences we offer these f3 type bobbins in the proper lengths for both ff1600 and ff2000/s2000 applications four and five speed versions of the gearbox use the same basic gears for all gear positions except first gear on a five speed version a four speed is actually using 2rd through 5th as 1st through 4th with a spacer located where first gear normally is a four speed can be converted back to five speed configuration by replacing the 1st gear hub sliding gear and 1st gear set we only advise using a lubricant that has an ep additive the torco synthetic gear oil listed elsewhere in this catalog is an excellent choice the ep additive is necessary to protect the ring and pinion from the severe side loads encountered in racing gearboxes as far as wear goes if the face of the dogs on either the dog rings or gears themselves become rounded over the corners more than 1/3 of the depth of the dog that component should be replaced to prevent jumping out of gear on 2000 cars pay particular attention to the shape and wear pattern on the gear teeth on first and second gears if the gear tooth is no longer a nice involute shape and is beginning to flatten out then the gear must be immediately replaced another sign of trouble is if the gearbox is excessively noisy because of the straight cut gears the gearbox is certainly not quiet however a siren like sound that can be heard over the engine as a car powers past the pits is a sure sign of something amiss excessive preload on the rear carrier bearings can lead to such an occurrence bat inc phone 941 355-0005 fax 941 355-4683

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