Using 300TDI Injectors in a 200TDI - Defender Source
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  #1  
Old April 17th, 2016, 11:14 AM
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Robert Davis
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Using 300TDI Injectors in a 200TDI

Am working on an experiment to use modified 300TDI Injectors in a 200TDI.

A few days ago, installed a new head gasket and a reworked cylinder head on a 200TDI engine.
Knowing that the spray patterns and pop-off pressure are identical or very close among the 200TDI and 300TDI decided to modify a set of 300TDI injectors to fit into the 200TDI head.
This required adding a collar to the 300TDI injector to make it the same clamping height as the 200TDI.
The 300TDI Injector lines must be used and the 300TDI hold down clamps.

Pictures attached...
Will update this thread after driving the 110.
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RDavisinVA

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  #2  
Old April 17th, 2016, 11:22 AM
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What is the benefit? Availability of 300tdi injectors compared to 200tdi? Cost? Proof of principle? Good experiment regardless.
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  #3  
Old April 17th, 2016, 11:36 AM
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Quote:
Originally Posted by xjahx View Post
What is the benefit? Availability of 300tdi injectors compared to 200tdi? Cost? Proof of principle? Good experiment regardless.
According to my contacts at Bosh, 200TDI Injectors are NLS and when you find NOS ones they often cost 4 or 5 times more than a new 300TDI injector.
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RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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  #4  
Old April 17th, 2016, 04:36 PM
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Brian
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I hope this works!
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  #5  
Old April 17th, 2016, 05:04 PM
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Keep up the work.
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  #6  
Old May 3rd, 2016, 01:22 PM
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Works fine,
It may just be the fact that these are new injectors verses the old well used ones that came out, but seems like the 200TDI engine runs smother and has a little more power after being converted to use the 300TDI injectors.
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RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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  #7  
Old May 3rd, 2016, 02:59 PM
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Hm. Neat. I wonder if a bolt on clamping collar like this would work?

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  #8  
Old May 3rd, 2016, 08:12 PM
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Great work. We should send each one out to get flow tested. I don't have any injectors to have tested or I would do it.
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  #9  
Old May 8th, 2016, 08:56 PM
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Robert Davis
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Quote:
Originally Posted by Naplm00 View Post
Hm. Neat. I wonder if a bolt on clamping collar like this would work?

I don't think it would because of 2 things:
1.) The clamp cannot be so tight it pinches the hollow housing and effects the internals.
2.) The injector is slotted, so the spacer has to be flat on 2 sides, not round.
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RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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  #10  
Old May 8th, 2016, 11:35 PM
DailyDrivenDefende
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Thanks for proving the concept!

Now, 300TDI injector fuel lines needed no modification to make this work?
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  #11  
Old June 6th, 2016, 10:24 AM
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We have about 400 miles on the new 300TDI injectors in the 200TDI engine and they work fine.
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RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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  #12  
Old June 6th, 2016, 03:48 PM
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Neil Steinhagen
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Robert,

Are you going to offer theses as a kit then?

If so, what's the price? Will you offer with and without the collar?

Price savings over the 200Tdi injectors?

Thanks.

-Neil
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  #13  
Old June 7th, 2016, 09:50 AM
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Robert Davis
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Quote:
Originally Posted by steinhnj View Post
Robert,

Are you going to offer theses as a kit then?

If so, what's the price? Will you offer with and without the collar?

Price savings over the 200Tdi injectors?

Thanks.

-Neil
I will offer this as a kit for around $579.
While the price is aclose to a set of reman 200TDI injectors, you don't have the risk of loosing a deposit because of damaged cores.
Don't understand why, but even good mechanics can render an injector core unusable making the exchange scenario unsustainable.
Drew in Richmond made an adapter to use a slide hammer to pull out the 200TDI injectors.
This endures no damage to the crush washer surface for the small spill over banjo.

The nozzles on the 200TDI are getting expensive and the price keeps going up.
The 300TDI nozzles are cheaper, so if you need to rebuild the adapted 300TDI injectors in the future, the price will be lower and a damaged core more easily replaced.
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RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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  #14  
Old June 7th, 2016, 10:01 AM
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Quote:
Originally Posted by rdavisinva View Post
I will offer this as a kit for around $579.
While the price is aclose to a set of reman 200TDI injectors, you don't have the risk of loosing a deposit because of damaged cores.
Don't understand why, but even good mechanics can render an injector core unusable making the exchange scenario unsustainable.
Drew in Richmond made an adapter to use a slide hammer to pull out the 200TDI injectors.
This endures no damage to the crush washer surface for the small spill over banjo.

The nozzles on the 200TDI are getting expensive and the price keeps going up.
The 300TDI nozzles are cheaper, so if you need to rebuild the adapted 300TDI injectors in the future, the price will be lower and a damaged core more easily replaced.
You could also sell your used 200TDI injectors as cores to recoup some expense.

Are we sure that the flow rate on these injectors is the same?
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  #15  
Old June 7th, 2016, 10:24 AM
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Robert Davis
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Quote:
Originally Posted by st0k3d View Post
You could also sell your used 200TDI injectors as cores to recoup some expense.

Are we sure that the flow rate on these injectors is the same?
I would issue credit for good 200TDI cores if someone wants to buy a 300TDI injector conversion kit.

According to the shop the nozzles have the same number of holes positioned symmetrically with the spray pattern very close if not an exact match.
This info is what lead me to the proof-of-concept to do the conversion.
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RDavisinVA

Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
Reply With Quote
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