2.5di to 2.5 td

[simon68]

Just bought a 97 Smiley and i'm not sure i can live with the 60-65 top speed.I've seen a 2.5 TD on ebay fairly local and was wondering if it would be a straight swap.
My engine is the 2.5 di non banana one.
I'm new to all this and would be really grateful for any advice.

[gotgcoalman]

If it's a bosch pump increase the fueling

I was rattling along today @ an indicated (lots more than 60)

[simon68]

thanks for that.Not sure what mine is,will look in the morning.Is it just a matter of seeing bosch or lucas on the casing? scuse my lack of knowledge

[joinerman]

I have a 98 smiley TD with a manual pump conversion, it will pull 90 mph with ease, not that i do very often of course.

[twin wheel camper]

Just bought a 97 Smiley and i'm not sure i can live with the 60-65 top speed.I've seen a 2.5 TD on ebay fairly local and was wondering if it would be a straight swap.
My engine is the 2.5 di non banana one.
I'm new to all this and would be really grateful for any advice.

Top speed will be as much if not more to do with the axel gearing rather than power available at least on the flat, hills are a different story.
I have two smiley transits and both are TD but 1 came to me a standard banana di and I must admit it was a pane driving it but then I fitted a TD and it transformed it but the top speed is really still about 50mph - 60 mph no change, mine is a chassis cab with a 5.14 axel and it is happiest at 50 ish mph but will pull up hills at this all day long loaded.

[simon68]

I have a 98 smiley TD with a manual pump conversion, it will pull 90 mph with ease, not that i do very often of course.

that's impressive.I'd just like to be able to do 70 and get there quicker.the acceleration is dire.

[simon68]

Top speed will be as much if not more to do with the axel gearing rather than power available at least on the flat, hills are a different story.
I have two smiley transits and both are TD but 1 came to me a standard banana di and I must admit it was a pane driving it but then I fitted a TD and it transformed it but the top speed is really still about 50mph - 60 mph no change, mine is a chassis cab with a 5.14 axel and it is happiest at 50 ish mph but will pull up hills at this all day long loaded.[/quote]

How difficult is fitting a TD to a Di? Is it a straight forward engine swap?

[twin wheel camper]

Top speed will be as much if not more to do with the axel gearing rather than power available at least on the flat, hills are a different story.
I have two smiley transits and both are TD but 1 came to me a standard banana di and I must admit it was a pane driving it but then I fitted a TD and it transformed it but the top speed is really still about 50mph - 60 mph no change, mine is a chassis cab with a 5.14 axel and it is happiest at 50 ish mph but will pull up hills at this all day long loaded.

How difficult is fitting a TD to a Di? Is it a straight forward engine swap?[/quote]



It’s the same basic engine you can fit the turbo and all other relevant parts from the TD to your own engine and then a little fettling with the injector pump and it will be transformed,or just pull yours out and transplant a TD in but the TD has a electronic pump fitted from the factory and can be transplanted as well from the donor but then you’ll need to change the wiring loom over as well, the easiest thing to do is use your own Bosch pump from your current engine on the TD.
It’s very well covered on here many times so do a search and you’ll no what’s involved.

[simon68]

that's great.thanks for your help.

[vanfox]

If you use your own engine and bolt the turbo and exhaust system on you'll need to arrange the turbo oil return to the sump. You'll need the turbo air cleaner pipes and smaller water pump pulley, smaller fan belt. Whilst you have the inlet manifold off check the tappets. Blank the now unused holes on the inlet manifold from the EGR. Be a good idea to replace the cam belt then advance the injection timing
You'll need to increase the main fueling and midrange fueling.

Find and read the many items here about how to do this, don't forget to tell your insurance you have a turbo.
Top speed will be limited to your tyres and diff ratio, the rev limit will stay at 4000-4200.
If the TDi you're looking at has a rev counter try to get it.

[simon68]

thanks for all the info vanfox.My Smiley has a rev counter.Not sure if that's because it's a custom model? I'm thinking more and more about just deleting egr and turning the fuel pump up.What diff is best for acceleration?

[twin wheel camper]

thanks for all the info vanfox.My Smiley has a rev counter.Not sure if that's because it's a custom model? I'm thinking more and more about just deleting egr and turning the fuel pump up.What diff is best for acceleration?

A diff for good acceleration will be poor for top speed,with a TD fitted you want a higher ratio diff for better cruising and lower engine revs.
Being honest turning the pump makes a di a little better but will still be slow by modern standards.
A TD isn’t fast by any standards but is so much more drivable I wouldn’t drive a NA DI after trying both...

[simon68]

To be honest i never realised it would be so tricky overtaking,pulling out of junctions etc.I had a 2.0 mk6 fwd before this and although restricted to 70mph it was really nippy.Before that i had a Nissan Vanette and even that was quicker than the Di.
I bought this with my heart as i've always wanted a Smiley and it was a pretty good semi high top example..perfect for turning into a day/camper van.
I guess i'll have to live with it till i can source a good TD engine.
Oh and driving it home at 60-65 the other day the rev counter was on the green limit of 3000 revs but i'm told it will to 4000?

[twin wheel camper]

You would really need to either drive another Di to make sure yours hasn’t a issue or get another member to drive yours to confirm yours is running properly.
There can be problems with the torque sleeve sticking on these which leaves them very under powered.
Has the diesel filter being changed to confirm it’s not partly blocked with crud?

[cherniy_chack]

Maximum engine speed Ford Transit MK3-MK5 4000 rpm.
The maximum speed is determined by the ratio of the differential of the rear axle and the size of the wheels.
I overclocked my atmospheric MK3 with a gear 4.11 to 140 km / h (87mph) at 3700 rpm.On 14 "wheels.
Now I have the same motor, but with a turbocharger, a reducer of 4.56 and 16 "wheels.
Faster than 100 km / h I did not, but the car began to accelerate faster.
Look at the diff transmission ratio.
http://transit-club.com/publ/2-1-0-2
Section 16
Indicates the gear ratio of the rear axle by code:
B N L G J K M
3.91 4.11 4.56 4.63 5.14 5.83 4.18