Vehicle & Technical > Discovery
1994 300tdi performance mods
SnakeLogic:
Snorkel advert also promise cooler air for better performance. Would this IN ADDITION to any gains from an intercooler, and is an upgrade chip needed to realize real gains from the intercooler? Anyone have any experience (good or bad) with these upgrade chips?
Budgie:
If your Disco is like mine then it doesn't have an ECU so you can't fit a chip to it.
The snorkle will give a little extra, but that's mainly due to the "Ram-air" effect when the snorkle intake is facing forwards.
You need to combine the larger intercooler with a change to the injector pump fuel settings to get the best out of it, without changing the injector pump setting then it's just like having the normal intercooler on there. :wink:
If you want a bit of extra power now, then there is a simple change you can make that will improve things.
On top of your injector pump you will see 4 screws. (see photo)
Undo these and carefully remove the cover.
Under the cover you will see a blue diaphram with a metal centre.
There should be a centre punch mark on the metal centre, take a note of where this is, so you can put it back to standard if you want/need too.
Now, ease the edges of the diaphram up to release them from the pump body and rotate the diaphram 90 degrees clockwise.
Reseat the edges of the diaphram and put the cover back on, re-fitting the 4 securing screws.
Now take it for a spin and see what it's like. :wink:
We did this mod' to Gord's Disco in the middle of a camp site and I think he was pleased with the results on the way home. :D
What you have done is to increase the amount of fuel allowed into the engine. If you go further than 90 degrees on the diaphram then you're just wasting fuel as there isn't the air to burn it with a standard intercooler.
If you notice some black smoke from the exhaust on full throttle then back off the diaphram a few degrees and see what it's like. :wink:
SnakeLogic:
Outstanding! As soon as I beat this cold, I'm going to give it a try. I imagine I'll have to set it back to original position to pass emissions inspection?
mark300:
hi all, thanks for all the suggestions and info. had a reply from andy at alli sport today, he said its difficult to fit a full width cooler to air-con auto models due to the auto box cooler,they recommend option 1 upgrade as this is a direct replacement gaining over 50perc more surface area,wich gives 18-20 perc more power & torque giving around 135bhp, the price is £285+vat- free fitting and £68 for silicone hoses or £55 if i have them with the cooler. he said i would have to move the oil cooler before thinking about the full width. too much trouble with that option if you ask me. going for option 1. sounds enough for me 8) also mine is just the normal pump,no edc so they will give it a tweek for me :wink:
Porny:
Never had my mentioned so many times in a thread :D
--- Quote from: "mark300" ---hi all, thanks for all the suggestions and info. had a reply from andy at alli sport today, he said its difficult to fit a full width cooler to air-con auto models due to the auto box cooler,they recommend option 1 upgrade as this is a direct replacement gaining over 50perc more surface area,wich gives 18-20 perc more power & torque giving around 135bhp, the price is £285+vat- free fitting and £68 for silicone hoses or £55 if i have them with the cooler. he said i would have to move the oil cooler before thinking about the full width. too much trouble with that option if you ask me. going for option 1. sounds enough for me 8) also mine is just the normal pump,no edc so they will give it a tweek for me :wink:
--- End quote ---
Andy at Allisport is a nice bloke and knows his stuff....
The Intercooler you've mentioned is a good improvement, and is very easy to fit.... I'd happily fit it for you (and adjust your pump) if you bought it mail order, but there again Allisport isn't that far for you to drive.
Andy will check the boost pressure and adjust the pump (exactly as already mentioned) - and you should notice a definate improvement for your money.
Ian
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version