Bosh timing adapter

[Tim1]

Hey fellas, just got off the phone with a fello named Oliver at www.sirtools.com and ordered the Bosh adapter pn. va6015 for 28. 50 including shipping. I will have to supply the dial indicator in metric, will find one once I get the adapter. His number is 1 800 8454542 If you go to their site, click on tools for toyota and go about 3 pages and it will have a photo of the tool. Will let you guys know have the timing goes after i get all the tools. Tim

 

[Mel Fuelling]

Tim1, now all you need when you receive your adapter is a

metric dial indicator with at least 2. 0mm stem travel that will

fit in your adapter, and you're in business. I'll be watching for

your posts to see how it all works out for you. Your adapter

price is certainly better than I found for a good starting point.

I wish my adapter collet fit the more common . 375 dial indicator

barrel. I hope you have just as good luck with the rest of your

purchases! Just another example of the value of this website!

 

[Tim1]

Hey Mel, got my service manual today (thank you Dave in Illinois) and it is very clear how procedure goes. When I get the adapter, I search the hock shops locally for the indicator. Did you adjust to 1. 7 or stay at 1. 5? I've got the Lucas injectors, do you think I should go to 1. 7? Or just try and test? By the way,Mel, that was a damn good idea about the motorcycle tube. Sounds like you have been turning wrenches for awhile. Thanks for the input,bud. Tim

 

[Mel Fuelling]

Tim1,

I'm still at 1. 5. I do most of my tuning in the evening if I don't

have a customer's equipment to work on, so it will take warmer

weather before I make much more progress. I used a 12" dial

caliper to "depth gauge" the distance from a scribe mark on the

near side of the pump to a scribe mark on my intake manifold.

Then I took a reading at 1. 35, 1. 50, and I tried to take one at

1. 7, but encountered some bind in pump body rotation, so could

n't reach 1. 7. I think I needed to loosen up the rear pump

supports, but it was getting dark so I quit at 1. 50mm.



Carry your adapter with you to make sure it fits the dial indicator

you are looking at. Some automotive machine shops carry an

inexpensive but very capable line like "Central" as well as Starret.

Check any used dial indicator out for any galling or lack of smooth-

ness in stem stroke and at least 2. 0mm of stem travel.



Try and test. Your Lucas injectors will be a little smoky at 1. 7 I

would imagine, but if they are you could turn the starwheel under

the aneroid cover CCW a turn or two to see if it responds, or

control the smoke with your right foot. Enjoy the results!

 

[Scot]

Can't we just use our english dial indicator and convert it to mm?

 

[Tim1]

You know Scott, that is a very good question. I think that it would have to be directed to Piers,Joe,Power wagon, or one of the other pump gurus. I'm interested,since I need a dial indicator! Tim

 

[mark93]

One inch equals EXACTLY (by definition) 25. 4 mm.



Multiply your travel reading in inches by 25. 4 to get millimeters of travel and divide your target plunger lift by 25. 4 to get your target inches. You will be working in the . 075" plunger lift range.

 

[NOMOFO]

But, does one of the pump adapters have the metric threads for the pump and the 3/8 collet for the indicator???

 

[NOMOFO]

. 075 x 25. 4 = 1. 905!!!!!!!! Isn't 1. 7 as far as anyone has pushed? Piers recommended 1. 45 max to me. FWIW.

 

[mark93]

Hey Everyone.





If I remember right, Power wagon stated a whilw back that some B engine with the Bosch VE had a spec of 2. 0 mm.



I have timing set to 1. 55 mm.



I purchased the Cummins guage (. 01 mm increments) and adapter and do not know what combination of end threads and collet size are available.

 

[Mel Fuelling]

Mark 93,

My adapter is threaded to screw into the spill port in the VE

pump on one end and has a . 317" ID collet on the other. I

have one metric dial indicator with the much more common

. 375" barrel. I looked for several months for a small dial

indicator before I was able to borrow the one I am using.

My adapter is very well made and easy to use, but I didn't

know if I was going to be able to find a dial indicator for it.



If you have a choice for comparable money, the smaller dial

indicator is easier to get into position and you don't have to

remove as many high pressure injector lines to use it.



Its been reported in this forum that some CPL's using the

VE pump specify spill port lifts as high as 2. 15mm. I talked

to one shop that had 2 customers try 1. 7mm. The only

response they had from their customers was that both

smoked more @ 1. 7mm and one thought he better set his

back down. This was a California customer who may be

concerned about a spot check. I'm at 1. 5mm, myself and

looking forward to trying 1. 7mm as well as going back to 1. 35

(which is considered by many to be optimum) and see how these

settings affect fuel economy, EGT, and drivability in my particular

application. If anyone has data from similar experiments, I hope

they'll post it and their observations.

 

[NOMOFO]

Mel, I should have figured out that . 317" translates to 8mm which apparently is JIS standard.

Mark, that rings a bell to me too but I think the higher settings were for stationary applications.

Oh, and the injector shop I talked to who would have set the timing said they would fudge it up to 1. 5 but no further. There is a tolerance they can work within but are under strict scrutiny of the Communist Air Resources Board. They absolutely would not install any other injectors than stock issue.

 

[Tim1]

Hey Mel, I'm seeing what you mean about the small dia. of the collet. I can't find a dial guage anywhere. I went to cummins and they wouldn't sell just the guage, whole setup $237. 00. I'm gonna go to Portland Precision Instraments next week. One thing that I need to know is how much of the pin extends out of the bottom of the adapter when the unit is assembled? Does, by any chance your dial indicator have a name and model no. on it? Thanks Mel! Tim

 

[paccool]

NOMOFO,

Mines at 1. 7 now. Had Wentland set it for me. they showed me the book and there are some off road applications that go to 2. 1 or so.



As far as the shop that wouldn't set the timing up- find a new shop!

 

[Mel Fuelling]

Tim1,

I haven't been online for a couple of days, my browser froze up

and I had to manually reboot one night, then I couldn't get back

online until I ran Scandisk. It seems to work ok now though.



I'll get post the dimensions you're asking about and use some

magnification to see if I can make out a name on my borrowed

dial indicator sometime tomorrow.

 

[NOMOFO]

Hey Tim1,

Mitutoyo catalog 2000a page R37 has their list of metric dial indicators. www.mitutoyo.com. With this info any machine tool shop can likely order what you want. I think one can change tips on the pin and effect dimensions.

Thanks for the tip on Sir Tools. Ordered one. I found a metric Mitutoyo 5mm range used. Will have to see if it's going work when adapter shows. Should, all matings are 8mm. Cummins

price $237 Geez, you can get a Snap-on kit for $179.

Paccool, I did find a new shop: ME! Sure would like to watch an expert once but adventure beckons!

 

[Mel Fuelling]

Tim1,

From the shoulder of my D. I. barrel adapter to the tip of the stem

adapter when assembled to use= 1. 700". This D. I. is marked

"Yamaha" and in smaller script, "Jedloch", stamped "2044" on the outer case. It is a very well made

metric D. I. with a 1. 832 bezel holding a 1. 420" gauge lens with

a . 315" barrel and a 5. 0mm stem stroke. Yamaha dealer shops

are the only places that I have seen them. Check grey haired

guys with grease under their fingernails that walk with a limp and

you might find one?



I dug a little deeper and found I also have a Central Tool metric

D. I. with a larger 2. 2" Bezel holding a 2. 00" gauge lens marked

#272. It has a . 500" barrel and a 20mm stem stroke. I purchased this D. I. with an optional 4 piece adapter set, each

an inch long with a corresponding 1" stem adapter, the barrel

adapters all being threaded for a different size spark plug hole.

If you could find one of these and turn down one of these barrel adapters to . 315 for a distance of . 700", you could adapt a . 500"

Central Tool #272 metric D. I. to the . 317" spill port adapter; but

I am not sure how all this will fit in the confined space we are

working in. I believe there is enough room, but I haven't done

the layout measurement to confirm it.





paccool,

What was your pump set at before? How do you like it at 1. 7?

Please describe the changes you have observed.

 

[Tim1]

Glad to here from you Mel, so if I understand you correctly, when assembled, the inner stem pin extends out of the adapter body 1. 700. I was looking at the Mytoyoa D. I. and will have to go to the tool company and fit one to my adapter. The 8mm collet is the tricky part. But now that I know the entension of the pin, I will be able to locate one. Thanks for the help Mel, I really appreciate it. Will advise when completed or if I run up against a wall again. Tim

 

[Case500D]

Hey Guys,



This is a very interesting discussion, but I have a question. I hope I didn't miss the answer if it was given earlier. What is the diameter of the tool that fits into the back of the pump for the dial indicator to read? A friend has the tool to fit a Bosch pump for a VW Jetta and he said it is 12 mm in diameter and thought it would fit all Bosch rotary pumps. If it is the right tool, then he is going to help me check the timing pin and then advance the timing to 1. 4 mm. Thanks for the help.



Jeremy

 

[R.E. Miller]

Jeremy,

I don't know the answer, but I would ask your friend to bring over his tool, I bet it would work.



My question is that advancing the timing in a diesel increases cylinder pressure right? If it does, then service life might diminish at those higher lift settings (i. e. >1. 7mm) Just thought I'd bring this up