Anyone done a 300tdi series conversion before? - Defender Source
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  #1  
Old May 5th, 2014, 07:54 AM
Sherb
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Ryan Herbert
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Anyone done a 300tdi series conversion before?

Bought a 300tdi converted series and decided to change the chassis over, i noticed the mounts used were bodged on and were just twisted, anyone know of any mounting brackets available to be a perfect fit?
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  #2  
Old May 5th, 2014, 10:28 AM
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Robert Davis
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What mounts are on the frame you intend to use, stock 2.25 mounts?
Is the frame stock or are you planning to go with a coiler of some sort?

You didn't mention if you had a 109 or 88 and what was the original engine configuration.
Is the 300TDI mounted to a series III gearbox or was a transmission and or transfer case upgrade done?
If so what transmission do you have?
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Old May 5th, 2014, 10:57 AM
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Installed a 300TDi into a Series requires custom modifications. There is no one way to do it or a plug and play solution.
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Old February 23rd, 2015, 10:10 PM
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Similar question. I have a NAS frame I'm putting a series body onto

Debating on engines. I know 200tdi will bolt up, but I could get a 300 non tubo engin and trans from an 85 defender for $3k.

What are ur thoughts? What r my issues?
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Old February 23rd, 2015, 10:55 PM
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Quote:
Originally Posted by MountDisco View Post
Similar question. I have a NAS frame I'm putting a series body onto

Debating on engines. I know 200tdi will bolt up, but I could get a 300 non tubo engin and trans from an 85 defender for $3k.

What are ur thoughts? What r my issues?
Define exactly what you mean by "300 non turbo engin".
Never heard of one.
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  #6  
Old February 23rd, 2015, 11:32 PM
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Hmmmmm...non turbo 300 "t"di ok....????????
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Old February 24th, 2015, 08:36 AM
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Well there is a diesel in an 85 110 at a junkyard and I'm only pretty sure it's a 300tdi due to that rubber cover, but I didn't see a turbo.

I guess Im not positive of the differences between a 200 or a 300tdi
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Old February 24th, 2015, 08:49 AM
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Quote:
Originally Posted by MountDisco View Post
Well there is a diesel in an 85 110 at a junkyard and I'm only pretty sure it's a 300tdi due to that rubber cover, but I didn't see a turbo.

I guess Im not positive of the differences between a 200 or a 300tdi
300 tdi didn't come out until 93. The easiest way to tell the difference between a 2 and 300 is the fan belts. one uses V belts (200) the other a serpentine belt (300). Both the 200 and 300 had turbo's. A non turbo engine simply means someone took it and defeats any reason to install either engine. Without the turbo they make less power than a 2.5 natural.
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  #9  
Old February 24th, 2015, 09:04 AM
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Christian, on a 300 the turbo is under the right side, unlike the high mount style on a 200 where it's quite visible.

If the truck is in a junkyard, it is possible someone took the turbo I suppose
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  #10  
Old February 24th, 2015, 09:09 AM
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A Disco 200tdi could look like a 300tdi to a newb
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  #11  
Old February 24th, 2015, 09:54 AM
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Jason England
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Quote:
Originally Posted by Sherb View Post
Bought a 300tdi converted series and decided to change the chassis over, i noticed the mounts used were bodged on and were just twisted, anyone know of any mounting brackets available to be a perfect fit?
Is it running a turbo ?

Can you post some pictures as although yours is not ideal i'm looking to put a 300tdi in a LHD Series II at some point.
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  #12  
Old February 24th, 2015, 10:01 AM
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Quote:
Originally Posted by Sherb View Post
Bought a 300tdi converted series and decided to change the chassis over, i noticed the mounts used were bodged on and were just twisted, anyone know of any mounting brackets available to be a perfect fit?
Should be a simple task for a fabricator to replicate what you need.
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  #13  
Old February 24th, 2015, 10:29 AM
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Quote:
Originally Posted by Sherb View Post
Bought a 300tdi converted series and decided to change the chassis over, i noticed the mounts used were bodged on and were just twisted, anyone know of any mounting brackets available to be a perfect fit?
If you are replacing the chassis, get an galvanized unit that has 300tdi mounts already in place. Yes you can get mount kits. The jig to place them in the right spot is key. My sense here is that you reused another old chassis and had the mounts incorrectly mounted.

Photos please!

Quote:
Originally Posted by MountDisco View Post
Similar question. I have a NAS frame I'm putting a series body onto

Debating on engines. I know 200tdi will bolt up, but I could get a 300 non tubo engin and trans from an 85 defender for $3k.

What are ur thoughts? What r my issues?
Since a series is shorter than a Defender/90 frame, how do you plan to "fill in the gaps"?

On engines, 200 sits differently in the frame to a 300. You'll need to cut the V8 engine mounts out and replace them with the correct mounts for your engine set up. There are kits out there to do this. These aren't plug and play conversions however and an experienced hand pays dividends.

You could be looking at a TD not a TDi engine. Post a picture of the unit in question and we'll tell you what you have.
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  #14  
Old February 24th, 2015, 11:17 AM
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All of the body mount bracket are available and are low cost. No need to fabricate anything.
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  #15  
Old March 18th, 2017, 12:50 PM
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I know this is an old thread, but just to keep this info in one place.

Steveparkers.com makes all the brackets and mounts required. I'm installing a 300tdi in my Series III 109 as I write this post.
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Old March 18th, 2017, 06:38 PM
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Quote:
Originally Posted by Factoid View Post
I know this is an old thread, but just to keep this info in one place.

Steveparkers.com makes all the brackets and mounts required. I'm installing a 300tdi in my Series III 109 as I write this post.
I just came up on these interesting thread, about a year ago I completed a 300 tdi conversion on a 88 santana 109. the santana is a leaf sprung series 3 chassis using a defender body we used the steve parker conversion you describe.
we used the existing lt77 box, a few studs get omitted and a couple get rethreaded and relocated on the bell housing.
watch the spline count on the clutch disc.
one side reuses the existing engine mount bracket, the other used the conversion kit. because of the location of the steering box on a santana we had to relocate the alternator to the a/c perch, the belt in this kit does not match.

the exhaust down pipe is shaped on "S" form because it needs to clear the mount. the p/s pump out of a disco fits, we did not have the original nor did we have the p/s drive pulley which is non grooved.
and as a last note the 95 range rover classic/discovery 1 p/s hose kit comes in handy.

for cooling the cowling and or fan do not fit so we used a hayden fan with a thermostatic relay.

the 300 fits deep in the chassis and deep against the bulk head due to the short bell housing.

the santana had a 12j so fuel plumbing had to be modified a little, glow plug and injection pump
power were a no brainer and possible the easiest part of the conversion.

a word of advise, replace the clutch slave before dropping the engine otherwise it is a pita.

you're welcome to pick my brain if you have questions .
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  #17  
Old March 19th, 2017, 02:22 PM
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Can I simply connect the 300tdi glow plug daisy chain to the Series diesel glow plug connector on the firewall? Could it be that simple?
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  #18  
Old March 19th, 2017, 02:44 PM
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Quote:
Originally Posted by Factoid View Post
Can I simply connect the 300tdi glow plug daisy chain to the Series diesel glow plug connector on the firewall? Could it be that simple?
The Series ignition switch for the 2.25 won't work with the 300. Normally you turn the Series diesel key switch to the glow plug position before starting. When you turn the key switch to START, the Series switch kills all power except for the starter, so the 300, which requires a 12V source for the fuel solenoid, won't start.
Best is to buy one of Robert Davis' heavy duty timer relays for the glow plugs. Then simply wire the key switch to operate the glow plug timer when you switch to ON. Install a separate start push button switch to fire the engine.When you turn the key to OFF, it kills the fuel solenoid and the engine stops.
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  #19  
Old March 19th, 2017, 05:22 PM
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Perfect, thanks Bill!

I just sent him a pm.
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1976 Series III 109 "Montoya" ("You killed my father, prepare to die")
1988 Defender 90 LHD "Vizzini" (speed demon from Sicily)
1987 Defender 90 MOD LHD "fezzik" (giant rock thrower)
1975 Porsche 911 hot rod
1964 Porsche (Beck) 904
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  #20  
Old March 19th, 2017, 07:28 PM
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i have sold 3 300 tdi conversion kits to series owners in the last year, 2 manual, one auto
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