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  #21  
Old September 4th, 2008, 10:54 AM
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Quote:
Originally Posted by pendy
Buck

Is your air filter stock? Do you run a snorkel?

I don't really care for a K&N air filter for these engines, but it you could cover one in a prescreen like a motorcycle filter does and run a large bore snorkel to a pre filter type arrangement at the snorkel head-might be a good arangement for you and would help it breath better for your "events" with Cary.

From there a slight propane injection system actually burns the fuel better, so you reduce fueling at the injection pump. Some changes that may not venture into the "destructive harmonics" realm.
Thanks Pendy,

I run an big open eliment K&N where the stock airbox used to be. No more canister. I run a prefilter on the K&N. I would be willing to try the snorkle idea, but I really don't think it will help much. I have no real fenders and no inner fenders, so there is plenty of air rushing through the motor. And, for the race specifically, when you get in someones dust trail, a snorkle would still suck it all in. The additional prefilter would be nice, but I don't find particulates in my air intake even before I started running the prefilter.

I am seriously considering the propane injection. There is some info online about 2.5 td applications where the gains were substantial with little or no egt gains. There is a simle kit available that works off the turbo boost with fine adjustment. I am noodling right now.
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  #22  
Old September 8th, 2008, 06:16 PM
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Does anyone know of a filter wrap for the K&N 38-9051 300tdi filter?

K&N does not make one that even comes close.

FYI:
220mm height
133mm dia
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  #23  
Old September 12th, 2008, 06:18 AM
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Quote:
Originally Posted by pendy
5 core radiator and stage 1 allisport intercooler. Wastegate and injection pump boost signal rerouted to the intake manifold and 15-16 lbs boost verified.

IMO-Jack
agreed. With all the shit I have done to mine (I had it so I could power slide on pavement with 35" tyres locked) ...that's what I have backed into and I'm totally happy to be back there.

Still don't get 30 mpg though (had to throw that in JP)
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  #24  
Old September 13th, 2008, 04:18 AM
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Quote:
Originally Posted by pendy
Buck

Is your air filter stock? Do you run a snorkel?

I don't really care for a K&N air filter for these engines, but it you could cover one in a prescreen like a motorcycle filter does and run a large bore snorkel to a pre filter type arrangement at the snorkel head-might be a good arangement for you and would help it breath better for your "events" with Cary.

From there a slight propane injection system actually burns the fuel better, so you reduce fueling at the injection pump. Some changes that may not venture into the "destructive harmonics" realm.

What's wrong with the K&N?
I've run one for 3 expeditions to Morocco. Standard air box, no snorkel.
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  #25  
Old September 14th, 2008, 05:54 AM
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Quote:
Originally Posted by mikeslandrover
What's wrong with the K&N?
I've run one for 3 expeditions to Morocco. Standard air box, no snorkel.
http://www.aulro.com/afvb/technical-...s-finally.html
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  #26  
Old September 14th, 2008, 11:41 AM
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Quote:
Originally Posted by mikeslandrover
What's wrong with the K&N?
I've run one for 3 expeditions to Morocco. Standard air box, no snorkel.
Nothing. There's nothing wrong with running them (no offense to anyone who thinks otherwise). If you look at just about any sandrail built by a pro shop, you will find an open air K&N with a prefilter on it. The whole backlash against K&N started when people would over-oil them and they had problems with the MAF sensor because of it. It was user error, and we don't have maf sensors. All the other nonsense is just repeated rumors. I have run one for 270,000 miles on my Nissan, 4 years on my TDi. It's fine. Now whether or not it actually makes any performance gains on the 300 is a worthwhile conversation. I didn't notice any improvement at all, other than I got to drop all the bulky airfilter stuff.
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  #27  
Old September 14th, 2008, 03:47 PM
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Thanks Buck, I've got them on all 3 of my Tdi's. Principally to avoid the constant replacement.
I think it saved the 90's engine when I went overly deep in some water (Twice)
Water went through the engine but I believe the K&N atomized the water sufficiently to avoid hydraulic lock.
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  #28  
Old September 14th, 2008, 05:21 PM
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My next step will be the rad and intercooler. then maybe that secret pump and boost trick from pendy..

what about that vgt. that looks sweet.
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  #29  
Old September 14th, 2008, 05:37 PM
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Quote:
Originally Posted by TDI Guy
My next step will be the rad and intercooler. then maybe that secret pump and boost trick from pendy..

what about that vgt. that looks sweet.
vgt?

btw, the intercooler will not help without the pump mods.
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  #30  
Old September 14th, 2008, 06:10 PM
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Quote:
Originally Posted by Cube II
Dunno if you might be interested but speaking of performance...I'd like one!
VGT

Anybody speak the idioma?
Yeah, the VGT. I believe you can buy this as a kit.

Follow-up Post:

http://www.allardturbosport.co.uk/pa..._discovery.asp
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  #31  
Old September 14th, 2008, 06:30 PM
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Buck,
What prefilter are you running?
Is that a 'OE' sized filter element?
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  #32  
Old September 15th, 2008, 12:13 AM
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Quote:
Originally Posted by D90user
Buck,
What prefilter are you running?
Is that a 'OE' sized filter element?
No, but I meant to help you earlier. I need to go out and check what brand because they make just about every size. The truck is loaded up on the trailer right now to be dropped off at the painters, so on the way in tomorrow I will grab the name.
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  #33  
Old September 16th, 2008, 02:24 PM
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Dave,

Do you still have your OE intake and filter assembly?
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  #34  
Old September 16th, 2008, 04:43 PM
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Quote:
Originally Posted by JSQ
Dave,

Do you still have your OE intake and filter assembly?
Hey,

Somebody beat you to it by 2 days! I just sold it. Sorry man.
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  #35  
Old September 18th, 2008, 08:31 PM
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How about the performance 300tdi head from Turner Engineering in UK?
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  #36  
Old September 18th, 2008, 09:47 PM
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I'm really leaning toward the propane injection. Did some research recently and the power gains with very little sacrifice in other areas are impressive. I will do a full write up when I get it installed and do some testing. Will be sooner rather than later.
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  #37  
Old September 20th, 2008, 02:08 PM
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Quote:
Originally Posted by Buckon37s
Hey,

Somebody beat you to it by 2 days! I just sold it. Sorry man.
It's all good homey.

My gearbox just showed up.
Going down to the shop to check it out.

Almost wrench time...
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  #38  
Old November 17th, 2008, 07:34 PM
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Gotta love *official* topics...

Just beginning to learn about the LR Diesels, and I am already interested in performance upgrades, but have some basic questions too.

Pendy you had mentioned rerouting some vac lines? Something to do with the wastegate and reference signal to the injection pump I believe, could you shed some more light on that please?

I currently have a boost guage installed in the short line that runs to the wastegate, is this an acceptable line to monitor the boost?

I have purchased an EGT guage, can anyone suggest an optimum location for the probe on the 300 Tdi? Guy I bought it from suggested less than 6in from the turbo, clamped into the downpipe. A buddy with a Cummins says that the Dodge guys always put it in the manifold. I would hate to do it and have to go back later and move it.

I have seen the rather confusing instructions on making fuelling adjustment in the injection pump, but I hear the Bosch VE pump has a fuel screw that is much easier to use for making the adjustment. Is this possible?

Can anyone show me a picure of a factory intercooler? I cant clearly see it and would love to have an idea of how big it is before I decide how to upgrade it.
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  #39  
Old November 17th, 2008, 07:50 PM
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Quote:
Originally Posted by crown14
Gotta love *official* topics...


Pendy you had mentioned rerouting some vac lines? Something to do with the wastegate and reference signal to the injection pump I believe, could you shed some more light on that please?

I currently have a boost guage installed in the short line that runs to the wastegate, is this an acceptable line to monitor the boost?

I have purchased an EGT guage, can anyone suggest an optimum location for the probe on the 300 Tdi? Guy I bought it from suggested less than 6in from the turbo, clamped into the downpipe. A buddy with a Cummins says that the Dodge guys always put it in the manifold. I would hate to do it and have to go back later and move it.

I have seen the rather confusing instructions on making fuelling adjustment in the injection pump, but I hear the Bosch VE pump has a fuel screw that is much easier to use for making the adjustment. Is this possible?

Can anyone show me a picure of a factory intercooler? I cant clearly see it and would love to have an idea of how big it is before I decide how to upgrade it.
Joel,
Congrats on your purchase ! The trick on the vacuum lines is to drill into and tap the intake manifold and plumb the "t" thats on the output side of the turbo into the manifold-block off the current location. By doing this the wastegate and injection pump get a true manifold boost pressure instead of a signal before the air is pushed through the pipes and intercooler. The EGT sensor should be before the turbo- theres a flat spot in the middle of the 300 manifold that makes that easy.
I'll let someone else address that fuel screw on the back of the pump and messing with it (it has a tamper proof sheild around it that you have to dremel off).
Doug
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  #40  
Old November 17th, 2008, 09:59 PM
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Ahh, thanks Doug. Ive drilled/tapped manifolds on engines before without removing them, is that possible to do safely on the LR diesel?
Being that I cant just run down to my local U-pull-it yard and grab a spare engine I want to be sure before I take a chance at getting shavings into the thing. Ill look at the flat spot on the manifold, but would the location where the EGR went be of any use for the probe?

Follow-up Post:

Another Tdi question, should I trust the factory coolant temp guage? I know diesels dont run very hot and all, but something tells me the $100 investment might be a good idea.
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