Disco 1 300tdi top speed 68mph????

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Potts

New Member
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Hi, i own a disco 1 300 tdi when i bought it a couple of months back it would quite hapily do 80 to 85. it has seemed a bit slugish lately and will now only do just under 70. I have replaced the lift pump, fuel filter intercooler pipes, cleaned the sediment trap, replaced air filter with a K&N, Blanked EGR, checked turbo end float and it seems to boost well. Was thinking pump timing maybe? Any ideas was hoping someone maybe able to shed some light.

Many thanks
Potts
 
Yeah thought about that i was following a mate who said he did'nt go over 70. I have fitted some slghtly bigger tyres recently but i would'nt of thought the would make that much difference.
 
Tweak the fuel pump..
I get over 100mph on my 300tdi and it pulls through the gears well.
Only mod is bigger intercooler (from an saab), mondeo radiator with electric fan, fuel pump tweak and boost tweak.
Do a search on here there is loads of good info on how to adjust the fuelling.
 
ice said:
Tweak the fuel pump..
I get over 100mph on my 300tdi and it pulls through the gears well.
Only mod is bigger intercooler (from an saab), mondeo radiator with electric fan, fuel pump tweak and boost tweak.
Do a search on here there is loads of good info on how to adjust the fuelling.
Click to expand...

That takes guts to drive a d1 at 100mph!
 
Anyone who's taken a Disco over 85mph is a fookin nutter, they shake like mad due to serious lack of aerodynamics! As to the OP, one of your recent mods has obviously altered performance ... check each one for a problem.
 
biolandy said:
That takes guts to drive a d1 at 100mph!
Click to expand...

I've actually had an indicated 115 mph out of the fooker.:D
Dunno what that it is real terms, speedo's tend to always overread, have yet to test it with my satnav.
Private roads only obviously...:D
Anyway it's in bits now for more upgrades this winter.

Ported cylinder head, big oil cooler and freshen up for the motor.

Lots of new metal for the body!!!
 
Dewin said:
Anyone who's taken a Disco over 85mph is a fookin nutter, they shake like mad due to serious lack of aerodynamics! As to the OP, one of your recent mods has obviously altered performance ... check each one for a problem.
Click to expand...

They only shake like mad when the body mounts have rusted so badly that the rust is holding the body t the chassis!!! :D
 
ice said:
Tweak the fuel pump..
I get over 100mph on my 300tdi and it pulls through the gears well.
Only mod is bigger intercooler (from an saab), mondeo radiator with electric fan, fuel pump tweak and boost tweak.
Do a search on here there is loads of good info on how to adjust the fuelling.
Click to expand...
Which Saab is it from? Was it a straight replacement for the original or did you have to do some engineering?
 
Richard Martin said:
Which Saab is it from? Was it a straight replacement for the original or did you have to do some engineering?
Click to expand...

I used have a saab 900 turbo IC fitted. A few mods to the hose and it worked fine.
It's still quite small though.

Now I have a saab 9000 turbo IC fitted. Much better and bigger.
As I have a mondeo radiator and electic fan, the big intercooler sits in front behind the grill.
Some fabrication but not much.
Made a cross bar and mount for the IC and some custom pipe work.

After the winter the next intercooler will be double the width of the saab one.:D

Mission---- to get 200hp from a 300 tdi:eek:
 
Thank you all for your help, will try a de cat pipe was looking at it earlier it has a stainless exhaust but the cat is still there so i am ordering a de cat now. Does anyone think that the bigger tyres i have fitted may effect it as the rolling radius is much bigger?
 
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