# Small Block V Twins (not new V7s) **URL:** https://forum.motoguzziclub.co.uk/c/technical/small-block-v-twins-incl-all-new-v7-and-v9/26.md [Latest](https://forum.motoguzziclub.co.uk/latest.md) · [Categories](https://forum.motoguzziclub.co.uk/categories.md) · [Tags](https://forum.motoguzziclub.co.uk/tags.md) --- ## [About the Small Block V Twins (not new V7s) category](https://forum.motoguzziclub.co.uk/t/about-the-small-block-v-twins-not-new-v7s-category/32)
**Author:** [@system](https://forum.motoguzziclub.co.uk/u/system)\ **Replies:** 0
350 to 850 small block V Twin models, 70s to today now including new V7 and V9 --- ## [V50 MKii - won’t rev over 4k](https://forum.motoguzziclub.co.uk/t/v50-mkii-won-t-rev-over-4k/24925)
**Author:** [@Barry\_Conway](https://forum.motoguzziclub.co.uk/u/Barry_Conway)\ **Replies:** 1\ **Last updated:** [25 October 2026 20:40 UTC](https://forum.motoguzziclub.co.uk/t/v50-mkii-won-t-rev-over-4k/24925 "2026-10-25T20:40:10Z")
Continuing the discussion from New (old) member: --- ## [Imola 2 front wheel](https://forum.motoguzziclub.co.uk/t/imola-2-front-wheel/24897)
**Author:** [@John51](https://forum.motoguzziclub.co.uk/u/John51)\ **Replies:** 6\ **Last updated:** [20 October 2026 10:55 UTC](https://forum.motoguzziclub.co.uk/t/imola-2-front-wheel/24897 "2026-10-20T10:55:04Z")
Help wanted , I removed my front wheel on my 1987 Imola 2, unfortunately I didn’t take note of where the wheel spacers go? I have tried various combinations, none seem correct. There’s a thick spacer about 4mm and a th… --- ## [750T Bitubo folk inserts](https://forum.motoguzziclub.co.uk/t/750t-bitubo-folk-inserts/24603)
**Author:** [@Mark1](https://forum.motoguzziclub.co.uk/u/Mark1)\ **Replies:** 21\ **Last updated:** [16 October 2026 11:35 UTC](https://forum.motoguzziclub.co.uk/t/750t-bitubo-folk-inserts/24603 "2026-10-16T11:35:04Z")
I have just recommissioned a 750T that I bought at auction. The ride can only be described as a bone shaking, after half an hour your innards are well shaken up. The long front forks ( with 2 sets of castings for the fr… --- ## [V50 Electrical P10 Red Wire and Future Proofing.](https://forum.motoguzziclub.co.uk/t/v50-electrical-p10-red-wire-and-future-proofing/24746)
**Author:** [@FletchG](https://forum.motoguzziclub.co.uk/u/FletchG)\ **Replies:** 6\ **Last updated:** [16 October 2026 09:29 UTC](https://forum.motoguzziclub.co.uk/t/v50-electrical-p10-red-wire-and-future-proofing/24746 "2026-10-16T09:29:24Z")
I’ve just finished a total rebuild, however on 3rd ride out I lost all electrical power. Connecting the fuse board direct to the battery, effectively bypassing the ignition switch restored power (Garage playing later and… --- ## [V50ii Stock regulator wiring](https://forum.motoguzziclub.co.uk/t/v50ii-stock-regulator-wiring/23164)
**Author:** [@SteveCorner](https://forum.motoguzziclub.co.uk/u/SteveCorner)\ **Replies:** 9\ **Last updated:** [15 October 2026 16:34 UTC](https://forum.motoguzziclub.co.uk/t/v50ii-stock-regulator-wiring/23164 "2026-10-15T16:34:00Z")
Im a bit confused with the wiring connections in to the front of my regulator. Ive got the connector with the 3 yellow wires from the alternator but can’t work out the other connections, I think its a series of single … --- ## [V50111 Carburettor problems](https://forum.motoguzziclub.co.uk/t/v50111-carburettor-problems/24713)
**Author:** [@Dodger](https://forum.motoguzziclub.co.uk/u/Dodger)\ **Replies:** 21\ **Last updated:** [14 October 2026 18:49 UTC](https://forum.motoguzziclub.co.uk/t/v50111-carburettor-problems/24713 "2026-10-14T18:49:25Z")
I have a V50 111 and it has started to pop and bang when the throttle is closed particularly whilst going down hill. I looked at the plugs and the off side plug was perfect with a nice tan colour whilst the near side pl… --- ## [Carb and exhaust covers - 3D printed](https://forum.motoguzziclub.co.uk/t/carb-and-exhaust-covers-3d-printed/24852)
**Author:** [@tonypearce](https://forum.motoguzziclub.co.uk/u/tonypearce)\ **Replies:** 0\ **Last updated:** [10 October 2026 17:10 UTC](https://forum.motoguzziclub.co.uk/t/carb-and-exhaust-covers-3d-printed/24852 "2026-10-10T17:10:24Z")
I have created some covers that bolt over the carb inlets and exhaust outlets, plus the starter motor, made from ABS so should be OK whilst I work on the cleaning up, can share the files I created in Onshape if anyone wa… --- ## [V50 3 tick over](https://forum.motoguzziclub.co.uk/t/v50-3-tick-over/24741)
**Author:** [@Madbikebrad](https://forum.motoguzziclub.co.uk/u/Madbikebrad)\ **Replies:** 11\ **Last updated:** [8 October 2026 10:46 UTC](https://forum.motoguzziclub.co.uk/t/v50-3-tick-over/24741 "2026-10-08T10:46:32Z")
Any idea why I can’t get my V50 to tick over once the engine is hot? It is fine when cold but once hot it dies on closing the throttle. Sometimes instantly and other times it slows down first. I can then get it to tick o… --- ## [Random stalling at idle & broken power delivery](https://forum.motoguzziclub.co.uk/t/random-stalling-at-idle-broken-power-delivery/24697)
**Author:** [@Veloce](https://forum.motoguzziclub.co.uk/u/Veloce)\ **Replies:** 17\ **Last updated:** [5 October 2026 09:45 UTC](https://forum.motoguzziclub.co.uk/t/random-stalling-at-idle-broken-power-delivery/24697 "2026-10-05T09:45:37Z")
Hi all - wondering if anyone has any thoughts on two seriously annoying issues with my 2009 Breva 750. It was fine for about 9 months until it had a full service at Mototechniks. On the way home it had a hesitation in p… --- ## [V50 Monza 1981 electrical issues - updated 17 Sept](https://forum.motoguzziclub.co.uk/t/v50-monza-1981-electrical-issues-updated-17-sept/24484)
**Author:** [@MGMonza50](https://forum.motoguzziclub.co.uk/u/MGMonza50)\ **Replies:** 15\ **Last updated:** [28 September 2026 21:49 UTC](https://forum.motoguzziclub.co.uk/t/v50-monza-1981-electrical-issues-updated-17-sept/24484 "2026-09-28T21:49:05Z")
Took the bike out a run. I’d made sure the lights and indicators worked before setting out on the journey. Neutral light lit up in green when in neutral as it should. Halfway into the journey I noticed the battery light… --- ## [V50 Tyre wobble/bulge](https://forum.motoguzziclub.co.uk/t/v50-tyre-wobble-bulge/24730)
**Author:** [@SteveCorner](https://forum.motoguzziclub.co.uk/u/SteveCorner)\ **Replies:** 5\ **Last updated:** [23 September 2026 22:43 UTC](https://forum.motoguzziclub.co.uk/t/v50-tyre-wobble-bulge/24730 "2026-09-23T22:43:40Z")
I recently had to replace the inner tube in my V50. When I did it, I just pulled one side of the tyre off the rim to slide out the tube and slide in a new one. After leveling the tyre back on, I inflated the tyre to 60ps… --- ## [Replacement V50-2 ignition pickups](https://forum.motoguzziclub.co.uk/t/replacement-v50-2-ignition-pickups/24743)
**Author:** [@DaiG](https://forum.motoguzziclub.co.uk/u/DaiG)\ **Replies:** 0\ **Last updated:** [22 September 2026 22:07 UTC](https://forum.motoguzziclub.co.uk/t/replacement-v50-2-ignition-pickups/24743 "2026-09-22T22:07:42Z")
The ones under the plate at the front of the engine. I knew Laverdas used the same pickup but I’ve only just stumbled across some for sale Laverda igntion pickups fit V50-2 Not cheap and they’re secondhand. --- ## [Back to the V35](https://forum.motoguzziclub.co.uk/t/back-to-the-v35/24703)
**Author:** [@netleyneil](https://forum.motoguzziclub.co.uk/u/netleyneil)\ **Replies:** 14\ **Last updated:** [18 September 2026 13:22 UTC](https://forum.motoguzziclub.co.uk/t/back-to-the-v35/24703 "2026-09-18T13:22:19Z")
After another bout of treatment which has laid me up, I am back in the shed with the V35. My talented mate has put the original air filter back in and I decided to test the compression. See pics. One’s rubbish and the ot… --- ## [1981 V50 Monza](https://forum.motoguzziclub.co.uk/t/1981-v50-monza/24520)
**Author:** [@MGMonza50](https://forum.motoguzziclub.co.uk/u/MGMonza50)\ **Replies:** 4\ **Last updated:** [17 September 2026 18:15 UTC](https://forum.motoguzziclub.co.uk/t/1981-v50-monza/24520 "2026-09-17T18:15:32Z")
I took the bike to a local mechanic to adjust carbs as I knew they weren’t adjusted properly. The mechanic confirmed my suspicions and set the carbs up. As it was April in Scotland, temps were just above freezing, say 3 … --- ## [Replacing gearbox to swing-arm/driveshaft gaiter](https://forum.motoguzziclub.co.uk/t/replacing-gearbox-to-swing-arm-driveshaft-gaiter/22859)
**Author:** [@MGMonza50](https://forum.motoguzziclub.co.uk/u/MGMonza50)\ **Replies:** 5\ **Last updated:** [8 September 2026 06:40 UTC](https://forum.motoguzziclub.co.uk/t/replacing-gearbox-to-swing-arm-driveshaft-gaiter/22859 "2026-09-08T06:40:04Z")
I need to replace the rubber gaiter that fits over the UJ from gearbox to swing-arm/driveshaft and am looking for the best way to do this. Any hints or tips would be appreciated. I’m thinking: rear brake calliper off, s… --- ## [Small Block Flywheel/Ring-Gear size info?](https://forum.motoguzziclub.co.uk/t/small-block-flywheel-ring-gear-size-info/24626)
**Author:** [@Doc1](https://forum.motoguzziclub.co.uk/u/Doc1)\ **Replies:** 7\ **Last updated:** [3 September 2026 17:22 UTC](https://forum.motoguzziclub.co.uk/t/small-block-flywheel-ring-gear-size-info/24626 "2026-09-03T17:22:04Z")
Flywheel/Ring-Gear Outer Diameter? Hi all. I’m looking into the outer diameter of a Flywheel from any Engine that uses a Single-Plate Clutch design. Measuring across the outer edge of the Ring Gear Teeth, I’m looking … --- ## [Intake...straight pipes?](https://forum.motoguzziclub.co.uk/t/intake-straight-pipes/24386)
**Author:** [@RemFanUK](https://forum.motoguzziclub.co.uk/u/RemFanUK)\ **Replies:** 8\ **Last updated:** [2 September 2026 19:44 UTC](https://forum.motoguzziclub.co.uk/t/intake-straight-pipes/24386 "2026-09-02T19:44:38Z")
I want to run my carbs on a straight run into the intake as per these photos…anyone know where such things exist please that don’t point the carbs inboard? Thanks --- ## [Request for pics of a bare V50!](https://forum.motoguzziclub.co.uk/t/request-for-pics-of-a-bare-v50/24563)
**Author:** [@DaiG](https://forum.motoguzziclub.co.uk/u/DaiG)\ **Replies:** 7\ **Last updated:** [1 September 2026 19:22 UTC](https://forum.motoguzziclub.co.uk/t/request-for-pics-of-a-bare-v50/24563 "2026-09-01T19:22:54Z")
Oo-err missus! Seriously though, would anyone be willing to take the sidepanels off their V50x and photograph the gubbins underneath so I can have a record of what mounts where please? Reason being is that I’ve just had … --- ## [V50 ignition pick ups reclamation](https://forum.motoguzziclub.co.uk/t/v50-ignition-pick-ups-reclamation/24588)
**Author:** [@David\_Jarvis](https://forum.motoguzziclub.co.uk/u/David_Jarvis)\ **Replies:** 2\ **Last updated:** [24 August 2026 19:03 UTC](https://forum.motoguzziclub.co.uk/t/v50-ignition-pick-ups-reclamation/24588 "2026-08-24T19:03:36Z")
Hi, I’m a new member who bought a lemon. No not a Le Mans, a dog of a V50 mk2. The ignition pickups have been rubbing on the rotor a scallop has been worn out of the magnet poles. This makes set up impossible and I ca… --- ## [V35 Imola II 4 Valve problems](https://forum.motoguzziclub.co.uk/t/v35-imola-ii-4-valve-problems/2781)
**Author:** [@Mark\_P](https://forum.motoguzziclub.co.uk/u/Mark_P)\ **Replies:** 11\ **Last updated:** [24 August 2026 16:55 UTC](https://forum.motoguzziclub.co.uk/t/v35-imola-ii-4-valve-problems/2781 "2026-08-24T16:55:50Z")
Hi, My Imola II is running but the rocker s are slightly offset from the valves and cause them to wear on one side, does anyone know why this is? as this engine has lots of issues with the 4 valve head does that mean tha… --- ## [Recently acquired a V75](https://forum.motoguzziclub.co.uk/t/recently-acquired-a-v75/22731)
**Author:** [@WilliamHunt418](https://forum.motoguzziclub.co.uk/u/WilliamHunt418)\ **Replies:** 8\ **Last updated:** [24 August 2026 13:17 UTC](https://forum.motoguzziclub.co.uk/t/recently-acquired-a-v75/22731 "2026-08-24T13:17:35Z")
So after deciding to swap my V11 for a small block, I have recently purchased a V75. It’s an interesting bike but I need to know whether it’s idiosyncrasies (to me !) are just that or faults. The two main issues are a v… --- ## [V50 Replacement Tyres](https://forum.motoguzziclub.co.uk/t/v50-replacement-tyres/22584)
**Author:** [@FletchG](https://forum.motoguzziclub.co.uk/u/FletchG)\ **Replies:** 8\ **Last updated:** [19 August 2026 13:37 UTC](https://forum.motoguzziclub.co.uk/t/v50-replacement-tyres/22584 "2026-08-19T13:37:48Z")
I’m looking to replace my rear Avon Roadrider 100/90 Rear Tyre on a V50ii and they seem near impossible to find at the moment (Avon factory closure in Carlisle I think). I’ve read a couple of threads re 3.5/18 ME22’s but… --- ## [V50ii Inner tube valve length](https://forum.motoguzziclub.co.uk/t/v50ii-inner-tube-valve-length/24503)
**Author:** [@SteveCorner](https://forum.motoguzziclub.co.uk/u/SteveCorner)\ **Replies:** 1\ **Last updated:** [12 August 2026 07:15 UTC](https://forum.motoguzziclub.co.uk/t/v50ii-inner-tube-valve-length/24503 "2026-08-12T07:15:53Z")
Whats the correct valve length to suit the V50 rims? The tubes i’ve got at the moment are too short, I have to take the nut off to be able to get a pump on. The ones on the Gutibits website have 25mm valves, is that long… --- ## [Carburettor Sizing](https://forum.motoguzziclub.co.uk/t/carburettor-sizing/23566)
**Author:** [@Sparfla](https://forum.motoguzziclub.co.uk/u/Sparfla)\ **Replies:** 3\ **Last updated:** [11 August 2026 19:02 UTC](https://forum.motoguzziclub.co.uk/t/carburettor-sizing/23566 "2026-08-11T19:02:11Z")
Hi All, I have an interesting (to me at least!) question and thoguhts about why the V50 has such small (24 mm) standard carburettors. I’d be interested to know if anyone has put larger Dellortos on, with the standard ai… --- ## [Nikasil and oil burning issue!](https://forum.motoguzziclub.co.uk/t/nikasil-and-oil-burning-issue/24441)
**Author:** [@eddie](https://forum.motoguzziclub.co.uk/u/eddie)\ **Replies:** 29\ **Last updated:** [11 August 2026 18:02 UTC](https://forum.motoguzziclub.co.uk/t/nikasil-and-oil-burning-issue/24441 "2026-08-11T18:02:13Z")
Having spent lots of time and not a little cash trying to cure a repeating case of running on one cylinder, I recently learned that my bike is producing a constant whiff of burning oil from the nearside pot, eventually … --- ## [Simplex timing chains on a duplex chain engine](https://forum.motoguzziclub.co.uk/t/simplex-timing-chains-on-a-duplex-chain-engine/24471)
**Author:** [@DaiG](https://forum.motoguzziclub.co.uk/u/DaiG)\ **Replies:** 8\ **Last updated:** [11 August 2026 07:47 UTC](https://forum.motoguzziclub.co.uk/t/simplex-timing-chains-on-a-duplex-chain-engine/24471 "2026-08-11T07:47:33Z")
Has anyone tried it? Regina duplex timing chains are now in the hen’s teeth category - I recently had to order one from a private seller on ebay Italy because no dealer across Europe seemed to have one. Not even secondha… --- ## [Oil for 750 targa](https://forum.motoguzziclub.co.uk/t/oil-for-750-targa/23420)
**Author:** [@Owen\_Jones](https://forum.motoguzziclub.co.uk/u/Owen_Jones)\ **Replies:** 4\ **Last updated:** [9 August 2026 19:50 UTC](https://forum.motoguzziclub.co.uk/t/oil-for-750-targa/23420 "2026-08-09T19:50:25Z")
Can any one advise me which engine oil to use on a targa 750 1990. I use to use mineral but I find it very hard to find. So would full synthetic or semi synthetic be ok --- ## [Imola 2 4 valve issues](https://forum.motoguzziclub.co.uk/t/imola-2-4-valve-issues/24476)
**Author:** [@John51](https://forum.motoguzziclub.co.uk/u/John51)\ **Replies:** 0\ **Last updated:** [6 August 2026 23:21 UTC](https://forum.motoguzziclub.co.uk/t/imola-2-4-valve-issues/24476 "2026-08-06T23:21:56Z")
Hi,I’ve heard horror stories of 4 valve engines breaking exhaust valves.And that there are Suzuki ones that fit? Also where to get bolt on head protectors? I’ve just purchased an '87 Mk 2 Imola and would like to do any… --- ## [Imola 2 centrestand](https://forum.motoguzziclub.co.uk/t/imola-2-centrestand/24436)
**Author:** [@John51](https://forum.motoguzziclub.co.uk/u/John51)\ **Replies:** 3\ **Last updated:** [4 August 2026 17:17 UTC](https://forum.motoguzziclub.co.uk/t/imola-2-centrestand/24436 "2026-08-04T17:17:41Z")
Hi just bought an Imola 2 I’m going to restore as it’s been dry stored for quite a while. It came without a centrestand which makes life hard. I managed to get a used one but it was quite ropey and needed straightening… [Next page](https://forum.motoguzziclub.co.uk/c/technical/small-block-v-twins-incl-all-new-v7-and-v9/26.md?page=1)