My theory about future swap

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Rubenv340
Posts: 87
Joined: 16 Sep 2012 06:10 pm
Location: Portugal

My theory about future swap

Post by Rubenv340 » 14 Nov 2012 12:36 am

Hello guys, i've been thinking and i got something in my mind.
I own a 340 1.4 which engine is not in the best shape, and i may have the possibility (Mayyyyybeee) to get a B172k from a 340 1.7 almost for free + all the things like mounts, driveshaft, clutch, etc. etc.... Yes, all the swap work and etc. for only 10 hp...
The question is: my car has LPG and i don't want to loose it ! It really helps due to his low cost, so i want to keep it going.
From my knowledge, carburateur LPG systems only works in carb / spi injection. The best swap would be of course, the 1.7 turbo from 440/480, but it's MPI. In Portugal, LPG system for mpi costs around 1600€ lol :s So, my intention is to make the 1.7 running fine in my car with the LPG fitted, and after some times, adapt it to turbo. Might not be that hard right? The block is basically the same right? It's possible to plug & play exhaust manifold from the 400?? Then i'll do something like the R5 GTT. Turbo carbs.

Can't be that hard and expensive... i guess.
What's the 1.7 weakness? Is it a good engine at overall?

classicswede
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Re: My theory about future swap

Post by classicswede » 14 Nov 2012 09:05 pm

If you have a complete 1.7 to go in then that might be your best option to replace your engine.

The LPG mixer is not the same for the 1.7 to the 1.4 but you might be able to adapt the 1.4 carb to fit to save buying a new mixer.

For future conversion to keep a mixer system you would be better off fitting either a 2ltr engine from the volvo 400 series range or a Renault 1.8 16valve.

It is possible to use a mixer system with a turbo but they do not work very well and you are likely to end up burning valves out. RHD cars must have the turbo manifold altered to fit, I'm not sure if that is the case with LHD cars.

If you want to go turbo then you will realy need to to LPG injection but this can be done a lot cheaper than you have been quoted.
Dai

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Rubenv340
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Joined: 16 Sep 2012 06:10 pm
Location: Portugal

Re: My theory about future swap

Post by Rubenv340 » 15 Nov 2012 12:57 am

Thanks 4 the reply.

A Renault F7P is rare here, would never cost less than 900€, with everything.
Ye i was thinking about the mixer issue too, is it expensive to order a new mixer specifically to the 1.7 carb size? Swapping it to the 1.4 carb, it wouldn't loose power? I guess isn't direct fit.

It's dangerous to run turbo? I've seen a couple (a lot) of turbo cars with LPG, most part volvos 900, 850, etc. But ofc, it's a different system than mine.
I can't adapt that thingy, the autolube or something to mine?

Tell me about the prices of the injection systems.. The price i said is the common on in Portugal, can't get less than that. The LPG deposit must be replaced?

After all, carb turbo + lpg = No ! ? No way around?

Thanks

Rubenv340
Posts: 87
Joined: 16 Sep 2012 06:10 pm
Location: Portugal

Re: My theory about future swap

Post by Rubenv340 » 15 Nov 2012 02:26 am

This is my actual mixer.

I don't know how original the instalation keeps, but it works lol :P

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classicswede
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Re: My theory about future swap

Post by classicswede » 15 Nov 2012 11:09 am

The mixer for the 1.7 carb is not expensive at around £30 + delivery but they are hard to seal on. You need to use a gasget sealer around the base or the mixer will not work properly. I'm not sure how hard it would be to fit the 1.4 carb but it will be possible with some engineering.

A complete front end LPG injection system for the Volvo Turbo engine would cost £400 including delivery to your door. That would give you all the parts you needed to make the conversion yourslef.

A mixer system would not provide the correct amount of fuel in all load areas and it is the lean running that would damage the valves. A mixer system will also not give very good fuel consumption and the fuel metering is poor. The extra money spent on a injection system would pay for itself in no time on fuel saved.
Dai

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Rubenv340
Posts: 87
Joined: 16 Sep 2012 06:10 pm
Location: Portugal

Re: My theory about future swap

Post by Rubenv340 » 15 Nov 2012 02:47 pm

classicswede wrote:The mixer for the 1.7 carb is not expensive at around £30 + delivery but they are hard to seal on. You need to use a gasget sealer around the base or the mixer will not work properly. I'm not sure how hard it would be to fit the 1.4 carb but it will be possible with some engineering.

A complete front end LPG injection system for the Volvo Turbo engine would cost £400 including delivery to your door. That would give you all the parts you needed to make the conversion yourslef.

A mixer system would not provide the correct amount of fuel in all load areas and it is the lean running that would damage the valves. A mixer system will also not give very good fuel consumption and the fuel metering is poor. The extra money spent on a injection system would pay for itself in no time on fuel saved.
400 pounds is a great value !! I'll be in touch when it gets to the moment of the turbo engine. I can keep the same deposit or it will be provived as well in the package? I'm interested in learning more about this systems!!!

What you mean by seal around the mixer? Mine only have gasket sealer around the tubes as you may see in the picture, the mixer is fixed to the carb but i can take it out whenever i want, without any screw or something... Is it doing wrong function then?

I may be interested also in the mixer for the 1.7, i'm just waiting some replys.

Tyvm ;)

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Re: My theory about future swap

Post by classicswede » 15 Nov 2012 08:44 pm

You keep your existing LPG tank and just change all the engine and electrical parts.

The mixer for the 1.7 is held in the same as the 1.4 one with a spring but you need to use sealant on the base to stop air leaking past.
Dai

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Rubenv340
Posts: 87
Joined: 16 Sep 2012 06:10 pm
Location: Portugal

Re: My theory about future swap

Post by Rubenv340 » 15 Nov 2012 09:41 pm

Nice,


Turbo is not priority, first i'll take care of the suspension / handling + a bit of interior work (I'll give you a call when the time comes, to order suspension parts)..


Thank you :)

classicswede
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Re: My theory about future swap

Post by classicswede » 16 Nov 2012 11:40 am

Yes getting the suspension sorted and make sure the brakes are working as they should need to come before any engine upgrades.
Dai

Please email me directly on dai@classicswede.co.uk

http://www.classicswede.com

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Rubenv340
Posts: 87
Joined: 16 Sep 2012 06:10 pm
Location: Portugal

Re: My theory about future swap

Post by Rubenv340 » 25 Jan 2013 09:25 pm

Maybe what im gonna ask is all around the forum, but here it goes.

What is needed (the most important) to fit a 740 turbo engine to a 340 1.4?

Let's suppose i have a 340 1.4 and a 340 1.7.

Is it a big problem at all or the block is similar to the 1.7?

classicswede
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Re: My theory about future swap

Post by classicswede » 25 Jan 2013 10:54 pm

To fit the 740 turbo engine you are going to need a gearbox and torque tube from a 360. Much quicker to just start with a 360 in the first place.

And yes a quick search would have come up with teh answer :lol:
Dai

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Rubenv340
Posts: 87
Joined: 16 Sep 2012 06:10 pm
Location: Portugal

Re: My theory about future swap

Post by Rubenv340 » 26 Jan 2013 01:01 am

Almost no 360's in Portugal, so only if buying one from uk to get parts of.

Is the torque tube and the gearbox (w dif i guess?) straight fit?
Which bellhousing i will be using?

What about in the engine bay?

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