Volvo 340 uprated propshaft

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Chris-m
Posts: 55
Joined: 16 May 2015 03:52 pm
Location: lincolnshire

Volvo 340 uprated propshaft

Post by Chris-m » 19 Jan 2016 06:34 pm

Ive spent quite abit of time reading through old posts and build threads regarding the 340 propshaft issue

im also aware that alignment of the engine and gearbox helps prolong the life of the standard prop,
but these seem to be getting harder to find

Has anyone managed to find a custom propshaft company that can make a new prop that dosent have vibration or excessive weight issues?
Ive read somewhere driftmoto may have developed one, but can find much info on this

Any input would be great

cheers
Chris :340:
Last edited by Chris-m on 23 Jan 2016 10:50 am, edited 1 time in total.

derskine
Posts: 199
Joined: 29 Sep 2013 10:38 pm

Re: Volvo 340 uprated propshat

Post by derskine » 21 Jan 2016 05:03 pm

If you uprate the propshaft, the bellhousing will crack instead.
Also if the propshaft is any heavier than the standard prop you'll knacker gear synchro cones.
1984 Volvo 360 GLE Saloon
1987 Volvo 340 1.7GL

Additionally -

1966 Ford MK1 Cortina
1971 Hillman Imp
1984 Renault 18 GTD

Chris-m
Posts: 55
Joined: 16 May 2015 03:52 pm
Location: lincolnshire

Re: Volvo 340 uprated propshat

Post by Chris-m » 23 Jan 2016 10:30 am

Yea ive read this a few times now, but ive gone through 3 shafts and im stuggling to find them now

what happens when the "ebay rare tax" gets added to oem props and there £500 and only available once in a blue moon

Ride_on
Posts: 2243
Joined: 26 May 2009 05:34 pm
Location: Belfast, N. Ireland

Re: Volvo 340 uprated propshaft

Post by Ride_on » 23 Jan 2016 01:20 pm

How sure are you that everything else is perfect? I've read somewhere on here guys running high power engines without problems.

Bits I know:
Accurate torque wrench and correct new bolts for the clamps is essential.
Good mounting bushes all round (8)
Anything causing poor alignment static or under load.

Otherwise convert to 360. 340's are more numerous so chances of getting a good body are higher. 360s in good condition are alot more rare, but the engine/drive are usually good.
1980 345 DL_______1987 360 GLE (project car restored to GLT spec and B230FT'd)
1984 360 GLT______1987 360 GLT
1983 360 GLS______1989 360 GLE
1985 340 GL_______1986 340 1.4
1985 360 GLS______1995 940 SE 2.3 Turbo Estate (daily)
1987 340 GL 1.7

Chris-m
Posts: 55
Joined: 16 May 2015 03:52 pm
Location: lincolnshire

Re: Volvo 340 uprated propshaft

Post by Chris-m » 24 Jan 2016 10:02 am

Im currently rebuilding my car with pretty much all new bushes, maybe bad engine mounts were the cause before, although they are already poly engine mounts ill be replacing them aswell

I read a few old threads saying that some poly mounts are 3mm too short and a washer needs to be used to get correct alignment, are classic swedes current mounts still the same? maybe this was my issue

I have been looking at 360 conversions, do complete drivetrain setups often come up for sale? whats the weight difference like in a 360?

cheers
chris

Ride_on
Posts: 2243
Joined: 26 May 2009 05:34 pm
Location: Belfast, N. Ireland

Re: Volvo 340 uprated propshaft

Post by Ride_on » 24 Jan 2016 08:04 pm

Its not so much the drivetrain you need as full 360 engine and drive. The 360 engine and torque tube are heavier but I don't know how much. A torque tube needs care to lift, 340 prop shaft can be waved about in one hand. Overall the cars aren't massively heavier, probably {100kg). You really need the 2.3 turbo to make full use of all that weight.

You need some 360 engine parts, engines do come up with little interest. I do try to get people to keep the 360 unique parts like the sump, oil pump, bell housing gear change. Then you can use any red block.

Drive trains do come up too, there is a 360 breaking on ebay at the moment. The front of the gearbox and mainshaft are unique to 360 apparently. Take the gearbox and diff if you can.
1980 345 DL_______1987 360 GLE (project car restored to GLT spec and B230FT'd)
1984 360 GLT______1987 360 GLT
1983 360 GLS______1989 360 GLE
1985 340 GL_______1986 340 1.4
1985 360 GLS______1995 940 SE 2.3 Turbo Estate (daily)
1987 340 GL 1.7

Chris-m
Posts: 55
Joined: 16 May 2015 03:52 pm
Location: lincolnshire

Re: Volvo 340 uprated propshaft

Post by Chris-m » 24 Jan 2016 09:03 pm

I didnt realise they were only a tad heavier,

id be quite tempted by the 2.3 turbo, for the sake of reliability i think im gonna sell up all the renault stuff and get hunting some 360 bits,

i would just buy a 360 but ive just got my shell 100% rust free, dont fancy doing it again tbh :lol:

do the 2.3's bolt upto the 360 running gear fairly easy?

360beast
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Joined: 27 Dec 2013 08:40 pm

Re: Volvo 340 uprated propshaft

Post by 360beast » 24 Jan 2016 09:27 pm

Exact some bell housing pattern but the engine mount hits the turbo so you either need a custom manifold to relocate the turbo or a custom engine mount or potentially both which is what I fear might be my option with the bigger Garret t3.

Chris-m
Posts: 55
Joined: 16 May 2015 03:52 pm
Location: lincolnshire

Re: Volvo 340 uprated propshaft

Post by Chris-m » 24 Jan 2016 09:43 pm

Thats handy to know, custom manifold shouldnt be an issue

anyone got any links to a good build thread?

jimi
Posts: 23
Joined: 08 Apr 2010 11:47 am

Re: Volvo 340 uprated propshaft

Post by jimi » 07 Aug 2016 06:54 pm

I have a 360 propshaft and gearbox in a 340 car, and a b18ft. It runs perfectly in races whit 170 bhp, now it´s going to be more than 200.

I have make some propshaft, but they were heavier than stock prop and make a lot os vibrations, they was impossible to balance. To mount the 360 prop is easier than I think, It was 2 or 3 hours to adapt the parts.

Excuse me for my bad english.

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bogbasic
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Re: Volvo 340 uprated propshaft

Post by bogbasic » 07 Aug 2016 08:47 pm

Your english is very good. Brilliant. What you mean is that you have 360'fied a 340 ;-0
1988 340 1.4 GL, 218k, 5 door (Grey Bess). Gone to CBA.
1991 340 1.7 GL, 64k, 5 door, petrol blue (Deep Blue).
1988 360 2.0 GLE, 140k, 5 door, ocean blue metallic (Blue Bess).
1989 340 1.7 GL, 108k, 3 door (Red Ness).
More info here!

classicswede
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Re: Volvo 340 uprated propshaft

Post by classicswede » 09 Aug 2016 10:15 pm

Chris-m wrote:
I read a few old threads saying that some poly mounts are 3mm too short and a washer needs to be used to get correct alignment, are classic swedes current mounts still the same? maybe this was my issue
All red and black ones are correct length. Some of teh orange and blue ones were short. They should be 52mm
Dai

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

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