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View Full Version : 2.4turbo or 2.5mtdi or 2.5tdi swap



splitbusvanatic
15th January 2018, 09:06 PM
Hi fellas. Great forum.
My bro just got himself a reimo t4 in good nick.
Itís a 94 or a 95. Not sure off top of my head.
Anyway itís a 2.4d.
Not huge mileage and pretty well serviced.

Thing is. He recently picked up a 2.5tdi (102bhp) donor van for small change. Actually saved it from the crusher.

So we were thinking of

A. robbing the 2.5tdi turbo and intercooler bits and pieces and bolting them onto the 2.4 lump.

B. putting the 2.5 lump in and making itís pump to run mtdi. Or indeed modifying the 2.4 pump to suit the 2.5 lump.

C. converting the whole thing to accept the full 2.5tdi with ECU with throttle and immob. the works. Whole engine loom transplant etc.



If you guys had the choice. Which of the above options would you go for. ?

Bear in mind, weíll do it ourselves but we are not awfully keen on electrics and Iím especially not keen on the vw tdi reliance on n75 valves and mafís and map sensors and throttle pots. etc.

Gear box wise, Iíd need adivice as to which would be better to add a more mpg friendly 5th gear to. The 2.5 gearbox or the .í2.4.

Thanks in advance.
Dan.

arfur fox-acre
15th January 2018, 09:10 PM
Well, good luck. You're asking in the right place though, so you have that on your side.

S49
15th January 2018, 11:15 PM
I'd go for" turboing" the 2.4 but I seem to be allergic to ECU's.

Thebigredone
15th January 2018, 11:31 PM
Yep I'd rather go for non ecu, too many gremlins for my liking, just my personal choice tho [emoji106]

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Activ8
15th January 2018, 11:55 PM
The better solution is surely to sell the vans and parts on this forum - cheaply - & buy a T5? Better still give them away knowing your souls will be forever cleansed? Eh, what.... just thought it was worth a try... There's lost souls out there guys!

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regcheeseman
16th January 2018, 12:06 AM
If it was me, I'd swap the lot - no brainer really.

Did you have lego as a kid - its much the same.

There's actually less work involved in the full swap .

Unbolt, take pictures, lots of pictures, get a load of freezer bags, label assemblies as you go.

label the loom as you remove it, the fusebox end is all colour coded, so easy

Just swap all the bits over, at least you have all the bits.

regcheeseman
16th January 2018, 12:09 AM
The turbo'ed 2.4 will be underpowered and fragile

The mtdi will always be a compromise and you cannot make the TDI pump into an mtdi one - you can make the ID pump into a mtdi one, or even better hybrid the two.

But the TDI will ultimately be the better van and will be more saleable should the time come

d-9
16th January 2018, 12:13 AM
Option C all the way. They're so simple there's really no reason not to just swap the whole lot in. Mtdi is just a bodge when you've got a complete donor available

Jonnybigballs85
16th January 2018, 04:22 AM
The turbo'ed 2.4 will be underpowered and fragile

The mtdi will always be a compromise and you cannot make the TDI pump into an mtdi one - you can make the ID pump into a mtdi one, or even better hybrid the two.

But the TDI will ultimately be the better van and will be more saleable should the time come

What do you mean by fragile reg? Iíve heard they are bullet proof but I have held off doing it as I am worried it could cause problems


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Activ8
16th January 2018, 10:29 AM
Right, I'm going to offer a more serious answer...

My plan would be to end up with the ACV 102bhp AND the gear box, hubs, brakes as much as I could transfer over but the engine in an upgraded form.
Upgraded turbo, manifolds, IC, injectors, DP, as its quicker to fit out of the van.
Break the rest of the ACV van for spares and sell on this forum.

But first upgrade and document the 2.4d with the surplus ACV parts, turbo, manifold, IC, manual boost controller (8-10psi), get it running, video then sell this engine and gearbox.

Decisions, decisions, - Best of luck!

Dan
16th January 2018, 02:00 PM
2.4d turbod is equally as good to drive as my mapped 2.5tdi, I would base it all on service and mileage of the engines.

If the tdi is a good lowish mileage and serviced one then Iíd swap as they are a little more refined and easier to upgrade.

If itís a high miler dog and the 2.4d is good the id use all the bits and turbo it. You can always keep the block and strip it down and rebuild then sell the 2.4d turbod on.


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S49
16th January 2018, 02:26 PM
Or you could restore the one you saved from the crusher and start a fleet.

splitbusvanatic
16th January 2018, 10:34 PM
HaHa.
A fleet.
Don't talk to me.

He already has a lwb tintop caravelle homebrew converted camper. 2.4d. No mechanical mods.
The Reimo swb 2.4d.
The 2.5tdi (102bbp) lwb panel van.

And I am converting a caravelle twin slider 2.5tdi (88bhp) to become my daily driver cheaper tax camper.

Maybe I should knock him over the head and take all the toys.
And build some monster t4 triple engined hybrid juggernaut with a pop up roof. HaHa.

In all seriousness guys. Many Thanks for all the replies.
I guess the full tdi with a better 5th gear and small remap and upgraded injectors would be more sensible despite my hatred for all things electronic.

You see I've just converted my '66 splitty to the dirty derv using a 1.9mtdi afn with flipped Passat gearbox.
Land Rover 300tdi pump and a pulley and wastegate turbo from a mk4 golf.
Yes. Bodgery is my middle name.

Diesel bob quoted me 500 quid ex vat to make the 2.5tdi pump into a 'one wire' jobby.
You're probably right @regcheese but I don't know enough to disagree with you either as I never got close enough to one of these 5 cylinder pumps that runs the other direction.


Full tdi it's looking like.

He'll have enough spare old school stuff left over that's for sure.

Thanks again fellas.
Dan.

S49
16th January 2018, 10:39 PM
Sounds like your busy. cant have enough vdubs, we have four. Would love a "saved from the crusher" T4.

DannyMontez
16th January 2018, 10:41 PM
HaHa.
A fleet.
Don't talk to me.

He already has a lwb tintop caravelle homebrew converted camper. 2.4d. No mechanical mods.
The Reimo swb 2.4d.
The 2.5tdi (102bbp) lwb panel van.

And I am converting a caravelle twin slider 2.5tdi (88bhp) to become my daily driver cheaper tax camper.

Maybe I should knock him over the head and take all the toys.
And build some monster t4 triple engined hybrid juggernaut with a pop up roof. HaHa.

In all seriousness guys. Many Thanks for all the replies.
I guess the full tdi with a better 5th gear and small remap and upgraded injectors would be more sensible despite my hatred for all things electronic.

You see I've just converted my '66 splitty to the dirty derv using a 1.9mtdi afn with flipped Passat gearbox.
Land Rover 300tdi pump and a pulley and wastegate turbo from a mk4 golf.
Yes. Bodgery is my middle name.

Diesel bob quoted me 500 quid ex vat to make the 2.5tdi pump into a 'one wire' jobby.
You're probably right @regcheese but I don't know enough to disagree with you either as I never got close enough to one of these 5 cylinder pumps that runs the other direction.


Full tdi it's looking like.

He'll have enough spare old school stuff left over that's for sure.

Thanks again fellas.
Dan.
Got any pictures of the splitty?

regcheeseman
17th January 2018, 12:25 AM
Diesel bob quoted me 500 quid ex vat to make the 2.5tdi pump into a 'one wire' jobby.
You're probably right @regcheese but I don't know enough to disagree with you either as I never got close enough to one of these 5 cylinder pumps that runs the other direction.


Oh I am right.....and I can do the same for £300 less.

I build a lot of these hybrids........yet despite this, and the fact my own TDI has been running like a bag of shyte for months because of stupid electronics I'd still advise you go full TDI!

Activ8
17th January 2018, 01:24 AM
Oh I am right....

You know you are...


.... my own TDI has been running like a bag of shyte for months because of stupid electronics...

Hmmm,...


I'd still advise you go full TDI

to include the stupid electronics?


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splitbusvanatic
18th January 2018, 09:20 PM
I still despise the electronics. But when they go well. Theyíre sweet as a nut. And so easily worked on with diagnostics. Etc.

splitbusvanatic
18th January 2018, 09:26 PM
Oh I am right.....and I can do the same for £300 less.

I build a lot of these hybrids........!

I like the sound of that Reg.

What do you need ?
Both pumps ? And 200 quid :) ?

regcheeseman
18th January 2018, 11:35 PM
I like the sound of that Reg.

What do you need ?
Both pumps ? And 200 quid :) ?

Ideally I'd need to find a donor pump for the LDA top as well - but that's in the £200 charge, you might even get change.



to include the stupid electronics?

Yes, most definitely.

splitbusvanatic
9th March 2018, 08:46 PM
Ok Reg.
My bro is ready with the two pumps removed and on the bench ready to go. (2.4 and 2.5)
Can you accept them ?
Will it be easy for you to source an lda piece ?
Cheers.
Dan.

regcheeseman
9th March 2018, 10:45 PM
Ok Reg.
My bro is ready with the two pumps removed and on the bench ready to go. (2.4 and 2.5)
Can you accept them ?
Will it be easy for you to source an lda piece ?
Cheers.
Dan.

Your bro aint been emailing me separately has he? You're the fourth person this week asking me to get them an LDA for a 2.4. Not done one for ages then four at once. There's one donor pump on ebay at the moment and the two other blokes are watching that one.

Ring round breakers for a 1.7 vauxhall td pump, pay no more than £50.

Why are you not going TDI - think you are making the wrong choice.

Dan
10th March 2018, 01:15 PM
I'm still waiting too Reg [emoji6]


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Activ8
10th March 2018, 01:58 PM
Why are you not going TDI - think you are making the wrong choice.

Seconded :confused:

splitbusvanatic
10th March 2018, 08:03 PM
No sir. He didn’t email separately.
Going mtdi. Couldn’t be bothered with looms and ecu and limp and sensors and throttle pots.
It’s future proofing.

What year Vauxhall ?
Do you mean the old Isuzu engine in the old astra’s ?

S49
10th March 2018, 08:32 PM
MTDI? Is that mechanical pump........if so call me old fashioned but i'm all for that.

regcheeseman
11th March 2018, 12:03 AM
No sir. He didn’t email separately.
Going mtdi. Couldn’t be bothered with looms and ecu and limp and sensors and throttle pots.
It’s future proofing.

What year Vauxhall ?
Do you mean the old Isuzu engine in the old astra’s ?

It definitely aint future proofing - more like shooting yourself in the foot.

Looms and ECU aint scary.

Ah well..... yes isuzu lump.

regcheeseman
11th March 2018, 12:06 AM
MTDI? Is that mechanical pump........if so call me old fashioned but i'm all for that.

Yep mechanical pump - can be made to work fairly well if you have the required bits - three donor pumps in this instance.



I'm still waiting too Reg [emoji6]

five.

splitbusvanatic
11th March 2018, 02:45 PM
What kind of bhp would be easily attained Reg with the mtdi setup. ?

regcheeseman
12th March 2018, 12:14 AM
What kind of bhp would be easily attained Reg with the mtdi setup. ?

No reason why you shouldn't see 120-150 bhp

splitbusvanatic
12th March 2018, 03:43 PM
Ok. Cool. As said before. It’s more a bit of grunt going up hills and mpg is the brief.
Doing the fifth gear mod Also. Using the 2.5’s gearbox.
Thanks in part to your write up in another site Reg.
Cheers for that.

(I think I have found a 1.7 pump)

splitbusvanatic
19th April 2018, 12:50 PM
Sent you a Pm REG.

huskyman
7th May 2018, 08:47 AM
Hi. Nothing wrong with going 2.4 turbo. Mines been running well for four years now. But your choice as you have all the bits

Good luck

Activ8
7th May 2018, 05:26 PM
Hi. Nothing wrong with going 2.4 turbo. Mines been running well for four years now. But your choice as you have all the bits

Good luckWhat turbo , boost control and boost pressure did you opt for ? Or have you experimented with a selection of options?

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huskyman
9th May 2018, 07:37 AM
Hi I played with it still got to do inter cooler yet so can get more improvement from it. It beats my mates 102. No probs and he says he thrases the nuts out of it to keep up