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We are building a vehicle using the V85 engine. We would like to optimise torque through the range. No doubt this has been raised before, so forgive me for bringing it up again. There are ample options (Stage 1/2, remap etc.), but which have members found to deliver the greatest benefit?
Teaser, Let us see some pics of the vehicle and details of the build please.
Can hardly believe that it is economical to use a motor out of a new bike (or 1 year old) and spend a chunk of change to 'improve' it, when when you could buy an 8V 1200 or even a 1400 for 50% of the cost as a bolt in issue.
This is the development vehicle with an MG V7
Beautiful vehicle. I didn't realize you were marketing a vehicle, thought it was just a one off personal project. I haven't read the whole thread, but would love to learn more about it. Have you reached out to Mark Bayle (Beetle)? He has a website, and can send him a message through his site to discuss tuning. His maps do not generally create 'more' power, but maximizes power and torque delivery. There is only so much you can do given the starting point. Something to think about, the V85 motor passes the current EURO standards, but I would imagine significant changes to the motor, tune, TB size, fueling etc will effect the emissions, and you may be at the same point with being non compliant.This isn't my industry or expertise, but in the US many companies sell cars like this as 'kits' where the buyer sources the motor, and the seller has adapter plates/kits, etc for a variety of motor applications.
As someone else mentioned, a V9 motor might have better low end torque than the V85.Is the 1400 motor Euro-5 compliant?
To be clear the V9 makes similar peak torque numbers to the V85, but at about a 2k lower rpm, and it makes more torque from there to ~3k and equal torque from 3-5k.Here are the number I posted in Huzo's thread (https://wildguzzi.com/forum/index.php?topic=107750.new#new), as best as I could from sourced dyno readouts.V85 - 66 hp @ ~7980 / 49 ft lbs @ 5160-5300V9 - 51 hp @ 6000 / 47 ft lbs @ 3500RPM - V85 RWHP / Torque vs V9 RWHp / Torque :2K - 15 / 38 vs 15 / 403K - 24 / 39 vs 28 / 474K - 38 / 46 vs 37 / 465K - 46 / 47 vs 46 / 466K - 55 / 46 vs 51 / 447K - 64 / 46 vs -----8K - 66 / 45 vs -----
Interesting figures. How much more would it be reasonable to extract through tuning from the V9? I have been spoilt by the X Wedge on my Morgan Three Wheeler, and I know a V9/85 could not come close to the pull from that engine, but perhaps we could close the gap a little?
I don't have any data for you.Unlike say Harleys who left way hp on the table or even other manufacturers who were forced to leave room for improvement by meeting emissions standards the Guzzi smallblocks for years were largely limited by the heron head chamber design and didn't respond much to the easy upgrades (air cleaner, exhaust, tuning).That said the new hemi heads are a whole new thing in the sense and may fare better.It's just such a small market few have done anything like that yet, therefore... Not data.
I reckon the Ď85 would have had more appeal in some respects if it had the V9 mill from the get go.Iíd like to ride one so equipped.Iíll have a ride on a Roamer one day if I know my mates canít find out...
by when we in the UK will have to comply with the Euro 5 standard.
Yes - understandable. And to be fair, my M3W (with Stage 2) is a largely unconstrained Euro 3 and they are stopping production at the end of the year because they cannot meet Euro 5. The new vehicle will be 180kg lighter than the Morgan but around 100 kg heavier than the V85TT so it may not feel too bad compared to the S&S engine, but there is only so much one can do with 850cc without significant rebuilding.
Is that the case for kit car personal builds, or has Pembleton dropped the kit option now? I couldn't find it any more the last time I took a look at their site.That's a pain if so, you really want a big block for one of these IMO. :(
Lovely looking car but I too canít see how they can keep Euro 5 rating after changing just exhaust let alone anything else, guess itís a deal done whereby Guzzi sell compliant motor, Pembleton just submit this compliance paperwork to dvlc and no one looks ?Gearing it down was good idea but stuck with 2CV 4 speed box is going to be a limitation, fitting modern FWD 6 speed would make a lot of sense . Or submit the paperwork for v7 (compliant) engine but actually fit a BB 1400, that should be alright with 4 speed but that much torque through a 60 year old gearbox might strain it a tad.Best of luck, this is a good project, V85 is lovely motor IMHO, but the bike is seriously heavy, adding weight and chucking that box on is a big ask.
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