Recent content by Antony

Servo and standard advance achieve the same result but go about it in different ways. The servo piston still directs transfer pressure to the power side of the advance piston. It was designed to be more stable than standard advance. Light load is adjusted on your governor shaft. Yes changing...

The pumps and injectors we've seen have been pretty gummed up, in some cases quite bad failures but have also heard stories of people running mixtures no problem. The local bus company which were running anywhere from 5-20% Bio-fuel mixtures were having there Cummins ISB common rail injectors...

Won't fit. Cap nuts are a different size. 3L's are P size. B's are S size.

As you increase the opening pressure of the injector you will see a reduction in fuel injected and retard timing. This is because as you increase the open pressure you delay the start of injection. 10-20 bar not alot but 100+ bar definitely.

There's a outfit here that builds marinized 1kz-t's and claim they're 200Hp.

Personally I wouldn't go non-gen but being a Denso dealer I would say that :-) If it was chinese I wouldn't go there. Spaco and Firad is generally accepted as being ok.

Cummins will be Bosch so bigger from memory, I'd imagine they are the same size as the larger Zexel design.

The throttle is connected directly to the fulcrum lever via a spring or spring assembly. The boost compensator holds the fulcrum lever back so your thoughts at part throttle are correct. The boost compensator will work regardless of throttle position but only effect fuel when in contact with the...

Is anyone making ones like that for 1HD-T's? Sometime last year I tested a pump from an Ozzy company (had a skull logo) that had something similar in it. Wasn't overly impressive with the quality of the build but the cruiser did preform well.

You have to remember that profile only effects it only at wide open throttle. It gives you a fuel rate as boost increases as you would know. I'm not sure if its been developed with proven results or someone designed it just thinking it was a good idea. The design of these pumps while being...

@mudgudgeon Im not aware of that to groove have a specific purpose. The main advantage of that convex grind is total travel, a bigger spread between boosted and unboosted. I'm guessing they are custom but I've seen them (made by Bosch) in high boost marine applications. And of course the odd...

And this is the pin and cover off a zexel wl-t Zexel left Denso right Grinding is the easiest option. I just prefer to use this setup as I can trust its reliability and always achieve the result I'm after.

@mudgudgeon yes you will gain an extra 0.5-1.0mm travel and does make life alot easier when your trying to get more of a difference between unboosted & boosted fuel. I havn't measured the stop lever before but it could be 1 to 1. The adjusting lever, tensioning lever and start lever are part of...

@mudgudgeon I'll have a look tomorrow if I get a chance but I thought 1mm. I've used the wl-t more so than the 4m40 but they both allow for more stroke. If I'm building something 'a lot above spec' I'll swap all the internals including the cover where the unboosted cam is as they have a screw...

The best aneroid pin's I've found if your not grinding are in zexel pumps fitted to Mitsubishi's 4m40 or Ford/Mazda's wl-t. The diameter is larger so there is more total travel but you would have to swap the aneroid bush too. That would be top cover off job.