Recent content by NRS91

They were on the development side of things but yea the liability and longevity is precisely why I take their advice with decent weighting.

True but residual heat in the engine and turbo will keep the EGTs higher once it's heat soaked so post turbo EGT is like an average temp and shows how hot everything is whereas pre turbo shows how hot the fire is. I'll probably run both in my next build but my above comments come from Cummins...

Just to add to the EGT discussion. Cummins only provide post turbo spec to not exceed of 500c. While it wont show the peak EGTs it shows how much heat is soaked into the valves, head and turbo so for cooling down after a run its ideal. Its also the safest and easiest sensor install as its not...

Thats the one I was thinking of!

On the Bosch VE pumps there is a special tool which bolts in place of the end cap so the Pump shop can see how far the piston has moved for a set case pressure/RPM, I guess there would also be a Zexel and Denso equivalent if the Bosch one didnt work?

Would be good to hear more feedback from @KiwiDingo now he's had it installed a week or so? This is my product he's installed which I sell for Bosch VE pumps. https://stegs4x4.co.uk/product/dynamic-timing-advance-spacer-kit/

Thanks for the feedback, do you know the overall height of the screw? Glad it's working well though!

Glad its working as well for you as it does for those of us with Land Rover TDi and Cummins engines :) Did you drill the shim to fit in the end? Any adjustments to your pre-load screw? Also for those not so well versed on Toyota engines and 4wd models, what engine and 4wd have you installed it in?

Without the spring in place the rollers should ride the ramps on the cam plate as you turn the engine and send the piston out :)

@KiwiDingo would it be possible to have a pic of your Denso pump data plate? I want to try and get one similar for testing

Ah ok its similar to the Euro 1 300TDi and Cummins 6BT with the twin springs, i believe it allows better control over the timing advance. Drill the shim out and install in the cap then test would be my advice. If you turn the engine over with a breaker bar the timing piston should move out...

Bare in mind that you're adding 4mm to the overall travel so you are more than likely going to hit coil bind if you shim 4mm too, but if you compress the spring in a vice you can measure static height, installed height and coil bound height and compare to adjust to suit these pumps. Case...

On the Bosch pumps the timing advance spring becomes coil bound if you have a larger shim, which limits travel and isnt ideal for the spring. The CNC machined shim in the kit is the most pre-load while still getting full travel but it will advance a little quicker with the revs.

Very interesting! I tend to only tinker with the Bosch varient which have the flat plate. Though they use different size pistons in different applications so maybe the interchangeable plate and adjustable timing advance top hat plate are a more affordable way to achieve the different calibrations?

Thanks for the order! Looking at the internals of your pump it looks like it should fit! Being a Land Rover and Cummins nutter means when it comes to trying to fit Toyota Denso or Isuzu/Diahatsu Zexel pumps I struggle with what model numbers to eBay search for to get pumps for product...