Royal Enfield 535 GT Asbo 40 testing standard vs performance exhaust and confirm fuel venting ok.
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- Опубликовано: 18 сен 2024
- I realize we have already seen Asbo 42 here, and Asbo 43 is in the pipeline, but this has been an earlier, stalled project which was to be fitted with the same performance cams as Asbo 24 and 33, but these cams have not been available in recent times, so we had to make do with the standard ones and do the best we could for now.
Following on from the last outing to an mot test, where we were blighted by engine stoppages, thanks to what turned out to be a trapped fuel tank breather pipe. The first run in this clip was to finally get an impression of how this machine might perform with the various upgrades, but still with the standard exhaust system, which, if nothing else, is extremely heavy. Next, the following run with the performance exhaust system in place was cut short when I remembered I hadn't changed the camera battery!
Finally, a run taking in the usual short test route was completed, where I am certain there was a marked increase in performance with the new, performance exhaust system fitted - it must be a benefit just ditching all that weight and the machine sounds like it means business, as well!
Those Continental singles have their own virtues on the right roads, don't they? And the carb and new exhaust really seem to let it breathe the way it's supposed to. Another success, so well done!
Paul , een pracht van een motor en de uitlaat gewoon prachtig een tikje luider maar nog altijd aangenaam te rijden . Merlin heeft weer zij huiswerk zeer goed gemaakt . Met beste dank , Roger .
Dank u!
My son bought a 535 brand new a one couple years ago and I couldn't wait to try it, but once I did I was a bit disappointed especially with the ride the vibrations just became to much after an hour of riding my hands were a mass of pins and needles and I couldn't wait to get the bike back home again.
I know it's a big single but with today's technology you would think that they could have done something to counter balance the engine.
I really love the look of the bike it's a shame it's let down by the way it rides and runs.
Bloody nice, Paul. Picks up waaay quicker than the bog standard Gt I had for a short while! I wanted to tune it but couldn't justify the expense. So sold it and spent the money on the other bikes! 😉
I love the look and sound of this Enfield, I wanted one badly until the test ride, pancake performance was the issue!
I agree. I remember being quite excited about these machines when they first appeared, and then I saw the performance figures and specs. I would have probably bought one if they could have topped the 'Ton' in standard form, but they will get nowhere near, without spending lots of money on top again, so they lost one sale for certain.
Sounds nice and meaty with that new exhaust. Great stuff!
Sounds great! As always thanks for the ride.
I know the frustration ov loss ov fuel ⛽️ I could see how annoyed you were getting? Good video showing the loss ov fuel as well!💪
great sound and goes well!
Oh! yes that exhaust sound is worth a big ol' like all by itself.
Small world Paul , that bike was supplied by a friend of mine in Kent & me other mate made some exhaust for Mark Bowen , don't know if that's one of the systems he made though, great comparison video 👍
Thanks for the info, Tony!
Hi Paul you did a great job here the bike is running really nice, a complete open reverse cone megaphone wouldn't go amiss even if only for the noise and thinking you're on the TT course though it did sound nice at the end. I'm getting to know these roads nearly as well as the roads around me, Islandmagee Co Antrim. Thanks.
Thanks 👍
Best bike from RE
That would have to be the 750 Interceptor or the 1140 cc KX V twin, for me!
You'd almost think that bike had been storing up resentment and frustration during it's layup and finally found release.
If anyone doesn't "get" biking, they should just watch this video.
very tempting
I do like these.Lovely motorbikes....
Hi Paul, I really appreciate your videos, what Asbo stand for? And do you think the 600cc conversation would be worth while? Cheers Peter
Great looking bike, but I couldn’t live with that vibration, 😱 pins and Needles hell.
Hi Paul what is the choke size of the carb, I only ask as my 2001 500 bullet has a puny little thing on it which opens out to a port which after clean up is 34mm. I was considering how big I could go before loosing all the bottom end, I would appreciate your opinion if you have time.
Fascinating to watch the evolution, nice cameo from Charlie. Exhaust sounds good and no popping on overrun. Are you planning on retarding the standard cam just to see the effect?
Thanks, nothing much fazes Charlie! I have a set of original cams to hand, which could be reprofiled at a push, and these might be fitted at a later date, but I am prepared to retard the standard inlet cam, should the owner wish. It is his call, though.
@@paulhenshaw4514 it’s a nice machine, hope the owner enjoys many miles on it. My black cat loves the cover on my sidecar, uses it as a hammock.
Hello Paul,
A big fan of your builds, Just luv the work you do on these machines, Simply Amazing!
Just out of curosity: With a Abso Crank, high lift cam & Ported head, what would be the approximate bhp on real wheel ?
And what would be the 0 to 100 acceleration timming, would it be around 5 secs
Looking forward to your reply!
Hi, the power figures vary from engine to engine, as they can vary considerably on their compression ratios, cams, carbs etc, but a 500 Bullet engine will usually gain anything from 5 bhp to nearly 20 bhp over the standard output and, again, I have no figures, but accelerating in 1st and 2nd gears, some machines have been able to lift their front wheels.
@@paulhenshaw4514 Thank you for getting back!
Let me try to be a bit more specific about the build & Goal..
Donnor Bike: Uce Classic 500
Big Bore 535 Conversion - probably will reach compression of 9.5.1
Light weight Crank
Ported Head
Free flow exhaust & Air Filter
UCD 33 carb - with bigger Jets
Stock cam with Retarted Timmings - 1 tooth
Looking to reach around a decent 35 wbhp, Goal would not be to reach top speeds given its not a GT 535 chassis, Happy with top 100 to 120 Kmph cruising speed, Just want to increase acceleration timming for easy overtakes on Highway..
Please let me, know if you'd recommend any more changes..
We won't get fueled again
Beautiful Bike! Alas for me, an impossibly uncomfortable riding position :-(
So the head has had all the Hitchcocks bits plus a flow job using basic principles? It certainly seems keener revving than standard with a lot more top end. Dd you change pipe and silencer? These engines seem remarkably tolerant of different settings without one having to change jets. My Twinshock KLX carb needs altering every time something in the exhaust is modified.
The entire exhaust system [weighing a colossal 15 kgs] is standard for the first run, after that both downpipe and silencer have been changed for aftermarket 'performance' items, weighing far less.
Was it my eyes or were the clocks doing a bit of a dance on the second fast run? Would be nice to see exactly what could be obtained from one of these little bikes with a good bit of tuning work done? Especially if they can stand the strain at the bottom end better than the older bikes at higher revs??
The clocks seem to do that on all of them, certainly those I have ridden. The yellow and the green machines I have footage of on here would probably be capable of 100 mph or so, with suitable gearing, as would this machine, had performance cams been available when I tuned it.
Putting aside the human obstacles on your trip, it appears the 535 GT can be an enjoyable ride. Is it a comfortable bike?
Yes, I would say so, speaking for myself in any case.
Paul, is it on the standard engine sprocket? how would it run with an extra tooth sprocket fitted? or has anyone else fitted one and can comment. thanks for great informative videos m8.
was I hearing a lot of backfiring. Do you think there may be an exhaust leak allowing that to happen? Or is there some type of an air pump to please the government exhaust sniffers..
I remember when this bike was introduced here in the USA, but there were never any dealers. The only time I saw this machine was in magazines. I always wondered what it would sound like. Reminds me of The Yamaha, SR 500.
Probably just a leak at the pipe to silencer joint.
Hi, I have just had to replace the Hydraulic Tappets on my 535 and I was wondering if this was a common problem with this bike as it has only covered 1480 miles and I don't over-rev it or go over 60 on it. Thanks
I don't know much about what wears out and when on these machines, but anything failing at that low a mileage is very poor.
@@paulhenshaw4514 could you retro fit adjustable std pushrods instead as they worked?
@@davidwilliamson9162 I don't think so but I did wonder if there was a self adjustable roller tappet for this engine
I have seen 'solid lifters' referred to on the U.S. forum, but I have never seen them.
@@paulhenshaw4514 Thank you very much, I'll have a wee look and see as the original ones only lasted 1400 miles I'm not confident in the new ones. It might just have been a bad one but we will see. 👍😁👍
Are you a Cardiff boy originally? Only cos I recognise the accent and being one myself!
Merseyside originally, but I've lived in Wales for most of my life.
Sounds brilliantly is it comfortable for maybe 60 to 70 miles
Thanks, I think whether something is comfortable for certain lengths of time or distance will be down to the individual. I have ridden a few of these - see my other videos - and they have felt ok to me.
What did you do with the bike coz the speedometer doesn't look that shaky? In other Gts the speedometer are extremely vibrating but not in your case. What's the secret??
I know what you are talking about, having seen it for myself a few times, but I don't know why this one seems ok, I didn't do anything to steady the clocks.
@@paulhenshaw4514 fine whatever the reason is but what's the top speed?
Probably more than 90 MPH for this one, which was not fitted with performance cams. Others which have performance cams should manage over 100 MPH, such as this one:
ruclips.net/video/64TVt7jTsns/видео.html
😜👍
4 or 5 speed box ?
5 speed.
Thank you
What exhaust was this?
Sorry I don't know the make, but it came from Hitchcocks. The original system weighed 15 kgs!
Sounds like you got an angry wasp in your helmet, lol.
Yes, clearly something was buzzing in the wind!