[Michael Osoba]

Is there visually a way to tell externally if it has the coarse or fine tooth gears on the IP and other parts on a 1998?

My buddy is looking at one Monday, and the consensus seems to be to stay away from the fine tooth ones?

 

[FourSixEast]

Is there visually a way to tell externally if it has the coarse or fine tooth gears on the IP and other parts on a 1998?

My buddy is looking at one Monday, and the consensus seems to be to stay away from the fine tooth ones?

If the engine is out of a vehicle, remove the flywheel and there's an access cover on the flywheel/timing gear housing for to view the gearset, or physically removing the valve cover.

 

[Michael Osoba]

Dang. So no way to tell visually on the IP pump? Without taking it apart?

 

[Bryon]

Dang. So no way to tell visually on the IP pump? Without taking it apart?

Remove the valve cover...easy. You can also inspect any wear on the gear train, Interested in the consensus about staying away from the fine toothed gears....why.???
I have a 4HE1T in a boat that howels all day long at 3,000rpm and has never jumped a tooth. Oh also meant to mention you can also see the teeth through the timing pointer hole if you take that small cover off.

 

[Michael Osoba]

Remove the valve cover...easy. You can also inspect any wear on the gear train, Interested in the consensus about staying away from the fine toothed gears....why.???
I have a 4HE1T in a boat that howels all day long at 3,000rpm and has never jumped a tooth. Oh also meant to mention you can also see the teeth through the timing pointer hole if you take that small cover off.

I think its easier to start with coarse rather than convert over to coarse and change the parts out. Not everyone has had problems, but some have. Probably a good reason Isuzu switched it fast.