R75 CDT leakback on 2 injectors - options for repair?

[oddsocks]

Originally Posted by ColinW

Dave,
I am so pleased, as it was myself who recommended them a few weeks back, as Alan had done a great with my 4. He turned mine round in a day, and took a great deal of care over the balancing. I'ts a pity though you did'nt have all four done together, as a balanced set of 4 makes a huge difference at tickover.
Although he works in his big garden shed (I had the tour), he has all the equipment and above all the dedication to do a good job.

cheers

Colin

Colin - I did. Alan also tested the two exchange items and found that one needed a new nozzle and shims (even after 6k miles so probably out from 'new'), the other one was ok (or maybe shimmed but ended up balanced). Only charge for balancing those 2 was £20 for the nozzle. Charge was £90 each for the two that needed a full overhaul.

Just reading my earlier post, the note at the bottom was to alert others that just because you get factory exchange items do not assume they are balanced - the tolerance is so great that each could be in spec and totally out of balance with each other. That's why Alan checked all four of mine, not just the two that had leakback

The injectors are on their way back so will fit at the weekend

[oddsocks]

The injectors were returned this afternoon and fitted straight away (work could wait!). What an amazing difference -as well as starting immediately (whether hot or cold), the engine does not shake at all when idling - the balance is so good. This is my first diesel and I had always assumed that some engine vibration/rattle on idle was normal, but it has gone.

With Colin's first hand report having been to Lynx deisel and my excellent result i would definitely recommend him and not look elsewhere. His details are:

www.lynxdiesel.com
Alan Darby
0118 9734 469

start to finish from removal to refit was 4 days including postage each way.

Dave

[andyw]

The link doesn't work It should be www.lynxdiesels.com Hemust have more than one

[oddsocks]

Originally Posted by andyw

The link doesn't work It should be www.lynxdiesels.com Hemust have more than one

sorry - that's what happens when I post at that time of night after a beer or two! This forum engine doesn't let me go back and edit it - but if a mod has the power please correct the link. Thanks

I just refitted Ron's synergy2 (setting 6) now I have the smooth and fast acceleration up to the redline - the fuel rail can now supply the pressure needed :-)

[FROGGY]

Sometimes you KNOW when you are talking to someone that they are a "good un", and this was my impression of Alan at Lynx Diesels. I had tried (via email or telephone because of where I live) several different "specialists". Alan was honest, knowledgable (even to the extent of knowing part nos. off the top of his head), and offered, in my opinion, what I was looking for - good, old-fashioned engineering, and dedication to what you are doing. Add to this a same-day turnaround if there are no major problems, and it was no contest.
My four fully rebuilt and balanced injectors are on their way back here, and I will report on results when installed (don't hold your breath though, post here is delivered on donkeys).

Mick

[ColinW]

Froggy,
I absolutely agree about Alan. I spent about 45 mins with him in his workshop, which was just great. He took me through his process, showed me the stripped down injectors, then demonstrated the balancing procedure. This involves selecting one of about 20 different size shims, which he has to estimate from a previous flow test. It's re-iterative process which can take 10 mins or more, each time having to strip down, change a shim, then back on the test rig. This is why he manages to get all the flow rates within 10% of each other. I can't see the big boys doing that.
It certainly restores your faith in experts, when you have service like that.

We did talk about other injectors, and he was saying that Delphi ones are not adjustable, and have to be calibrated by the ECU on the engine - so clearly more money required. So perhaps the Bosch is not so bad after all.

Colin

[oddsocks]

Originally Posted by FROGGY

Sometimes you KNOW when you are talking to someone that they are a "good un", and this was my impression of Alan at Lynx Diesels. I had tried (via email or telephone because of where I live) several different "specialists". Alan was honest, knowledgable (even to the extent of knowing part nos. off the top of his head), and offered, in my opinion, what I was looking for - good, old-fashioned engineering, and dedication to what you are doing. Add to this a same-day turnaround if there are no major problems, and it was no contest.
My four fully rebuilt and balanced injectors are on their way back here, and I will report on results when installed (don't hold your breath though, post here is delivered on donkeys).

Mick

Mick, when Alan called me on Wednesday night he said he had completed mine that night (within 8 hours of receiving them) because yours had also arrived later that day and he wanted to get them on the way back to you on Thursday. How many bigger shops would work late to meet that sort of turnaround!

[FROGGY]

So the donkey finally arrived.
I worked outside in BALTIC weather and fitted the 4 rebuilt injectors.
The results were remarkable.
The car idles with no discernible movement or vibration, and acceleration, both in-gear and through the gears, is astounding. With Ron's box set to 10 and driving on wet roads it will unstick the front wheels in 3rd gear if you give it full boot just above 2000revs. Bit smokey at that setting, so will now play around for the optimum balance between throttle response, torque/power, and emissions.

As for Alan at Lynx Diesels I have nothing but praise. Meticulous workmanship, very knowledgeable, quick turnaround, cheaper than most, what more can you ask?

Mick