Lancia Motor Club

Model Technical and Interest => Fulvia => Topic started by: michaelkaye on 19 September, 2018, 05:02:43 PM



Title: Engine/Transmission "Shunting" on and off the power
Post by: michaelkaye on 19 September, 2018, 05:02:43 PM
Hi all,

I've had my Zagato Fulvia for a week now and thoroughly enjoying the experience so far.

However I do have a question about what can only be described as "shunting" of the engine/transmission when applying and releasing the power.

The engine mounts are pretty new, the gearbox lower mount is new, and has no loose movement in it. The gearbox support mount looks ok but may have some bagginess in it and the little torque reaction "foot" needs a bit of adjustment. Lastly the subframe mounts all look ok but may have a bit of slack in them.

So my question....what should I be looking at to fix this issue and make the driving experience slightly smoother and more enjoyable. Is it an issue common to the Fulvia or is this viewed as normal ?

Would appreciate any help or advice.

Thanks & regards,

Michael.


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: williamcorke on 20 September, 2018, 08:31:58 AM
It's worth looking at the pedal and mechanism for stickiness (friction). A friend with a Fulvia Sedan recently solved his car's 'kangarooing' problem when he found that the bushes had expanded causing symptoms like the ones you describe.

On my S1 Flavia, I had a related problem with both clutch and brake. The main bushes at the top of each pedal are some kind of nylon type material which had expanded, making it necessary to remove the cross shaft and enlarge the hole in the bush a bit with file and sandpaper to restore smooth movement. Part of the problem was that the pedals were not fully 'returning', which become more marked when they had been used (heat build-up caused by the unwanted friction?). A potentially dangerous fault, as the brakes dragging could heat the fluid and cause a failure.


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: fay66 on 20 September, 2018, 04:33:33 PM
Replaced the bushes under the pedal with roller bearings over 10 years ago, end of problem!
This has been a known fault with Fulvia for at least 30 years and the first article I found regarding this problem is dated 1988, the Bush expands with heat and the hole in it is too small to cope with the expansion.
Brian
8227  8)


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: simonandjuliet on 20 September, 2018, 04:41:01 PM
Tim drove my HF this week and said it was lovely apart from the 'horrid' throttle and suggested the same mod.....

So if you can remember the bearing size without my having to dis-assemble , I would appreciate it - getting lazy !


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: dhla40 on 21 September, 2018, 11:48:36 AM
I replaced the horrible organ pedal, that looks like it belongs on a bus, with a normal pedal from an Alfa that bolts to the original throttle arm. Much better control.

Sean


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: chriswgawne on 21 September, 2018, 01:21:24 PM
Here are a couple of photos of the original rubber 'wheels' which over time expand  and cease rotating....and then split!
When I first had this problem I made up a pair of nylon replacement wheels which worked fine until I bought sealed bearings as Brian suggested.
From memory I think the size is 7mm i/d  x 19mm o/d x 6mm wide and you need to make sure the bearings are located towards the ends of the axle pins.
The throttle sensitivity is transformed with bearings.
Its an easy job assuming you can unscrew the Philips screws holding the pedal to the floor.
Chris


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: fay66 on 21 September, 2018, 06:14:17 PM
Tim drove my HF this week and said it was lovely apart from the 'horrid' throttle and suggested the same mod.....

So if you can remember the bearing size without my having to dis-assemble , I would appreciate it - getting lazy !
.
Simon,
I'm not home until Sunday but I'll look out my invoice and let you have the size when I get back.
Brian
8227  8)


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: simonandjuliet on 21 September, 2018, 06:33:44 PM
Thanks !


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: lancialulu on 22 September, 2018, 06:03:39 AM
I have an invoice for for 6x19x6 .....


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: chriswgawne on 22 September, 2018, 11:37:57 AM
Found my invoice  - its 6 x 19 x 6. Sorry for any confusion.
Chris


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: simonandjuliet on 24 September, 2018, 05:27:59 AM
New bearings on their way .... 95 centimes each !


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: lancialulu on 24 September, 2018, 06:08:09 AM
New bearings on their way .... 95 centimes each !
yes probably the cheapest perforance upgrade for a Fulvia!


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: michaelkaye on 24 September, 2018, 06:54:31 AM
Thanks for all the replies. Can someone post a link to where to buy the  bearings...


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: simonandjuliet on 24 September, 2018, 07:43:25 AM
I`ve used these guys in the past

https://simplybearings.co.uk/shop/advanced_search_result.php?keywords1=6&keywords2=19&keywords3=6 (https://simplybearings.co.uk/shop/advanced_search_result.php?keywords1=6&keywords2=19&keywords3=6)


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: chriswgawne on 24 September, 2018, 08:23:45 AM
I use Simply Bearings as well funnily enough.


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: fay66 on 24 September, 2018, 09:52:10 AM
I use Simply Bearings as well funnily enough.
Simon,
as promised the bearings that I purchased from Redhill Bearings in 2006 were
NK110/20 and at the time they cost £5.25+vat.

Brian
8227  8)


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: simonandjuliet on 24 September, 2018, 10:08:00 AM
Funny how some things get cheaper ..... bet they're Chinese bearings that arrive !


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: lancialulu on 24 September, 2018, 10:43:01 AM
I use Simply Bearings as well funnily enough.
Simon,
as promised the bearings that I purchased from Redhill Bearings in 2006 were
NK110/20 and at the time they cost £5.25+vat.

Brian
8227  8)

Brian

Think that must have been for something else.  A similar bearing 111/30 is internal bore 110 external 130 and width 30


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: fay66 on 24 September, 2018, 11:01:39 AM
I use Simply Bearings as well funnily enough.
Simon,
as promised the bearings that I purchased from Redhill Bearings in 2006 were
NK110/20 and at the time they cost £5.25+vat.

Brian
8227  8)

Brian

Think that must have been for something else.  A similar bearing 111/30 is internal bore 110 external 130 and width 30
Tim,
To the best of my knowledge that's the only thing I've ever purchased from them ???


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: lancialulu on 24 September, 2018, 11:18:08 AM
I use Simply Bearings as well funnily enough.
Simon,
as promised the bearings that I purchased from Redhill Bearings in 2006 were
NK110/20 and at the time they cost £5.25+vat.

Brian
8227  8)

Brian

Think that must have been for something else.  A similar bearing 111/30 is internal bore 110 external 130 and width 30
Tim,
To the best of my knowledge that's the only thing I've ever purchased from them ???
Does not come up on any search. Not even from China, and closest was a needle roller bearing 110/30....


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: michaelkaye on 26 September, 2018, 11:29:04 AM
Thanks everyone for the information and advice. I passed it on to my mechanic and his response is this:

"I think for starters replace the front ball joints as they are pretty tired , check and replace the upper gearbox mount and check all the subframe mounts as a little movement in each won't help, in addition check the steering idler for play and replace the bushings in at least the throttle pedal as it is sticky. I don't think there is a corrosion problem with the subframe or where it attaches to the car".

I will let you know how we get on and how the car drives after all this!

Thanks, M.


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: DavidLaver on 26 September, 2018, 02:49:57 PM

Good news that its not the car hinging in the middle.  I can remember driving a friend's car with the gear lever going up and down an inch and a half on and off the throttle.  It wasn't long after the subframe ripped out.


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: chriswgawne on 26 September, 2018, 07:35:36 PM
I had one like that in the 70's David. A Brown 1.3S Coupe which I bought in Windsor with an MOT. It was so rusty and the rear of the car wasn't really connected to the front. Kind you it had a great engine which I fitted in my all aluminium Sport ........and its still in the car today I believe.
Chris


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: simonandjuliet on 27 September, 2018, 02:06:29 PM
Bearings arrived yesterday and took me 5 mins to fit today - didn't need to remove the pedal from the floor , enough flex to slide the bearings in/out

No time for a run today, but seems better - time (or Tim) will tell


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: lancialulu on 27 September, 2018, 03:35:56 PM
Bearings arrived yesterday and took me 5 mins to fit today - didn't need to remove the pedal from the floor , enough flex to slide the bearings in/out

No time for a run today, but seems better - time (or Tim) will tell
Let you know in 10 days time. Tim


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: michaelkaye on 28 September, 2018, 08:07:23 AM
Bearings arrived yesterday and took me 5 mins to fit today - didn't need to remove the pedal from the floor , enough flex to slide the bearings in/out

No time for a run today, but seems better - time (or Tim) will tell

Good to hear they were easy to change.

Quick question. How many bearings do I need to order. Are there two per pedal. Should I change for all pedals?

Lastly were they bought from that link on SimplyBearings?

Thanks Michael


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: simonandjuliet on 28 September, 2018, 01:44:48 PM
2 per pedal and mine came from "123-roulement" here in France. I think they were about £1.50 each from "simply bearings"


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: michaelkaye on 28 September, 2018, 02:01:57 PM
2 per pedal and mine came from "123-roulement" here in France. I think they were about £1.50 each from "simply bearings"


Thank you. M


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: lancialulu on 28 September, 2018, 04:35:17 PM
2 per pedal and mine came from "123-roulement" here in France. I think they were about £1.50 each from "simply bearings"


Thank you. M
Only 2  total for the Accelerator pedal as other pedals do not have them.


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: stanley sweet on 01 October, 2018, 09:41:42 AM
Bearings arrived yesterday and took me 5 mins to fit today - didn't need to remove the pedal from the floor , enough flex to slide the bearings in/out

No time for a run today, but seems better - time (or Tim) will tell

I like the idea of this mod. Will order bearings today. Simon, when you say 'enough flex', what did you do? Pull the top of the pedal towards the seat and bend it slightly in the centre so that the arm and bearings slid out the bottom of the 'C' section?


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: simonandjuliet on 01 October, 2018, 10:22:47 AM
Hi Stan, I flexed the pedal forward and the arm up then the bearings/rubber come out from above - I was "firm" not brutal ...


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: stanley sweet on 01 October, 2018, 01:48:16 PM
Thanks for that Simon. So the complete opposite of what I imagined......


Title: Re: Engine/Transmission "Shunting" on and off the power
Post by: lancialulu on 08 October, 2018, 07:38:28 AM
Simon,
as promised the bearings that I purchased from Redhill Bearings in 2006 were
NK110/20 and at the time they cost £5.25+vat.
Brian
8227  8)

Picking this up again, after a chance conversation with another Fulvista, these bearings could replace the bush the throttle arm pivots on at the bulkhead. Quite reasonable if that is what it is.