Prop upgrade

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jimi
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Joined: 08 Apr 2010 11:47 am

Prop upgrade

Post by jimi » 16 May 2015 06:15 pm

Hello,

I have make a propshaft upgrade for my Volvo 340, I know most people have problems whit standar propshaft and I like to show my new system, I don´t move the car whit this propshaft, but this week I am goint to probe it.

If you want to know anymore:
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Sorry for my poor english.

Best regards, Rubén.

kohshin
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Re: Prop upgrade

Post by kohshin » 16 May 2015 07:22 pm

340pw great ^^

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Chris_C
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Re: Prop upgrade

Post by Chris_C » 18 May 2015 01:00 pm

Looks good. What is the total mass of the new prop? I'd be very interested to hear how it feels when you change to a lower gear.
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast

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mac
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Re: Prop upgrade

Post by mac » 18 May 2015 06:04 pm

Excellent effort to solve a growing problem - but as Chris is suggesting the synchro cones may have a problem controlling the additional mass - it will be interesting to hear further.

Don't be concerned about your English - most of us barely speak any language including our own!

Mac
88 5door Redline 1.7 52k - 19 XC60 Momentum Pro D4 AWD 17k
1950 pair of legs that don't work very well.

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Chris_C
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Re: Prop upgrade

Post by Chris_C » 19 May 2015 11:16 am

The rubber damper coupling is a neat idea, and the fact that it is of relatively small diameter tube makes me think it's well worth a try. I'm looking forward to hearing about results!
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast

classicswede
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Re: Prop upgrade

Post by classicswede » 19 May 2015 03:39 pm

It is something I had considered years ago using the 240 rubber couplings.

Worth a try anyway and will be nice to see how it turns out
Dai

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

http://www.classicswede.com

phone/text 07824887160

Web shop http://www.classicswede.co.uk/

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jimi
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Joined: 08 Apr 2010 11:47 am

Re: Prop upgrade

Post by jimi » 23 May 2015 12:32 pm

I have a problem whit the propshaft, it doesn´t work as well as I need.

I think I have to change a coupling to make it sliding and correct the axial movement of engine and gearbox. When I make it I will refresh the post.

Best regards, Rubén.

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mac
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Re: Prop upgrade

Post by mac » 23 May 2015 12:46 pm

If there is any degree of axial play (or radial for that matter) it suggests a problem with the engine or transmission mounts.
With the transmission effectively "solidly" mounted any movement allowed by engine mounts in good order should easily be accommodated by the disc couplings.

What is the actual problem you are experiencing??

Mac.
88 5door Redline 1.7 52k - 19 XC60 Momentum Pro D4 AWD 17k
1950 pair of legs that don't work very well.

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

Re: Prop upgrade

Post by jimi » 23 May 2015 01:15 pm

They aren´t solidy mounted, they have the rubber play and the disc couplings accept lees axial movement that standar transmision, I think.

Ride_on
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Location: Belfast, N. Ireland

Re: Prop upgrade

Post by Ride_on » 23 May 2015 01:26 pm

Is the problem with static reving or under acceleration?

I think the original couplings are pretty rigid, the usual problems with this sort of replacement is the difference in weight, balance and preciseness of the centerings. Also your mounts condition is critical in the original setup, never mind with a less precise shaft.
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

kohshin
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Joined: 15 Jul 2007 06:16 pm

Re: Prop upgrade

Post by kohshin » 23 May 2015 02:22 pm

do your probshaft slide easely front to back with your hand ?
if no't , maybe your engine monut is dead or your homemade probshaft is not properly manufacture (perhaps an offset some minimeter in welds or other)
if it's good , your gearbox and motor are aligned tone

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

Re: Prop upgrade

Post by jimi » 23 May 2015 06:39 pm

Hello,
New transmisión parts was laser cut, welded by a professional and aligment whit 0,1 mm precision.
When I probe the car I have broken the bellhousing when I make pedal to the metal.
Satandar prop accept a little axial displacement, but this can't accept it, because it makes top if you want to compress it.
I think I have a solution making a sliding couple as a bmw or a 4x4.

Best regards, Rubén

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mac
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Location: Needham Market U.K.

Re: Prop upgrade

Post by mac » 23 May 2015 07:49 pm

Bell housing failure suggests major misalignment of engine (usually very soft or collapsed mounts) - with a "stiffer" front prop couple this will throw a high bending moment on the clutch shaft and hence bell housing. Excessive movement will also result from collapsed mounts.

The other possibility is a high energy primary or harmonic imbalance exciting the prop forward joint/clutch shaft rear bearing.

Mac.
88 5door Redline 1.7 52k - 19 XC60 Momentum Pro D4 AWD 17k
1950 pair of legs that don't work very well.

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