ClubIsuzu.org the new home of Clubisuzu.com

Hi Everyone.

Have started fabricating pump adaptor kits to simplify conversion of the 4JH1 to mechanical 4JB1 injection pump.
This enables a mechanical conversion while retaining the factory JH1 timing gears and case.

Link to info page: https://www.facebook.com/10685759134064 ... 32091/?d=n

Cheers
Paul

Do these use the belt or gear version of the 4jb1 pump?

geeves wrote:Do these use the belt or gear version of the 4jb1 pump?
Only the gear drive variant

Nice one, what injector lines do you use?

mh1989 wrote:Nice one, what injector lines do you use?
Preferably the 4JB1 lines and injectors, they have the greatest power potential. 4JH1 Injectors can also be use as I have thread adaptors to convert the 12mm VE delivery valves to suit the 14mm JH1 injection lines. 4JH1 injectors will limit the potential of the mechanical pump a little but still very usable.
Cheers
Paul

to convert a 4jh1 to mech pump can you fit 4jb1 gears and timeing cover lines and injectors etc will 4jb1 parts fit onto the front of the 4jh1 also what sort of electrical mods do you need to do tacho etc anybody done this thanks

sparky109 wrote:to convert a 4jh1 to mech pump can you fit 4jb1 gears and timeing cover lines and injectors etc will 4jb1 parts fit onto the front of the 4jh1 also what sort of electrical mods do you need to do tacho etc anybody done this thanks if you swap the whole lot over yes, but requires removal of the engine from vehicle to do so as sump also has to come off. Tacho reading is taken from flywheel rpm sensor, so not an issue with the mech pump.