Big Bore Kit in Royal Enfield Himalayan. More Torque? Yes, Please!

[@Mytwistedvoices]

I have the 462cc, I love it! It is what the bike should be. Nice video. I would love to see your video on a cam shaft ride. The Uphill is more stable, the sound is great. I took Hitchcock's advice and put heavy springs (3) in mine. I also have the 16T. My bike is for the road only. Leave it 15T for the off road power. I was hoping to get someone's opinion on my bike, but I don't have anyone near me. I have a HT 4.3 cam to put in mine. After the big bore install, it needs to redo the break in. The more it rides the better it gets, the rings wear in. The price is pretty good!

[@forgottenmotorcycles]

Will try to find a way to get on a Himalayan with the Camshaft upgrade. Can only imagine that this bike would respond very well to that. Let me know how it goes with your Himalayan. Wahoo!

[@Mytwistedvoices]

@@forgottenmotorcycles there are three companies I’m aware of. Look up “Himalayan camshaft comparison” on KZbin, there are owner comments there. I can't wait, I have an AT-200 to tune the bike for the camshaft. .

[@Mytwistedvoices]

@BEACHER828 no change in reliability. The 462cc kit has been 100% reliable. Hitchcock’s makes quality products.

[@lipsee100]

@@forgottenmotorcycles My Him has the tecbike cam ,,for my kind of riding its really abit of a waste because I rarely go over 5000revs,, thats why I,m interested in a rebore..I want more low down torque.. I just love blasting down country lanes (not more then 60) just enough to frighten mysefl ..

[@kyakaruvlogs2784]

So happy to see you followed up on my older comment and found a big bore RE ☺️🙏

[@forgottenmotorcycles]

Nice bike. Wahoo!

[@kyakaruvlogs2784]

@@forgottenmotorcycles Wahoo indeed ☺️

[@johndavis-tn3il]

One caution about big bore kits, they can have undesirable side effects affecting other bike components. I am glad that people are trying them. In a year or so we'll have some testimonials for or against them.

[@forgottenmotorcycles]

Very good point, for sure.

[@frederickwoods5943]

As an owner of a Royal Enfield and with many years of experience with engine maintenance/modifying and rebuilding, I would like to comment on the big-bore discussion. To arbitrarily say that issues could arise is true; both good and bad issues! I just bought two S&S big bore kits and the quality of the components in the kit is astounding. Yes, time will tell; I am installing the 743cc ("750") kit on my 2020 650 Interceptor that has almost 24,000 miles. They offer the same kit in a 863cc size as well. First difference I noticed is the individual pistons are not the same weight as the stock ones! To avoid arguments I will not say whether the weight is less than stock or more, but I do believe in the engineering quality of the brand of pistons in the kit having used them for over 50 years. Balanced aftermarket parts that are properly set-up will easily outlast factory as-built (the reason we have a 3-year warranty) due to better materials; particularly if said parts are not abused or used for racing. Choose wisely (WiseCo)😌 Yes, WiseCo pistons of Mentor, Ohio.

[@forgottenmotorcycles]

@@frederickwoods5943 would love to see pictures of that kit in that bike. Sounds like a bunch of fun to me :-)

[@johndavis-tn3il]

@@frederickwoods5943 I agree that my comment was not based on any Royal Enfield experience. The problem was observed decades ago and involved heat induced failures of the alternator rotor. The kit in question was a new set of larger bore cylinder liners for which the existing jugs had to be bored. What little I know of the more modern kits they seem to be complete cylinders which would allow for design consideration of increased heat to dissipate. An amateur such as I may conclude that added power means added stress throughout the powertrain. Admittedly the effect on a robust design should be minimal, I don't have a well formed opinion about the suitability of the design for tolerating power increases.

[@frederickwoods5943]

@@johndavis-tn3il yessir, I concur. Some or most! of the big-bore kits I have used require boring of the crankcase, apparently not so with the R.E. 650. This has me wondering if it was designed to accommodate bigger "jugs" by design. The engine is closer to square with bore and stroke of 78mm x 67.8 mm. My Triumphs are 90mm x 68 mm, compression ratio is 10.2:1 (R.E. is 9.5:1) and the S&S kits are 11:1 but can be set-up at 10.5:1 This is going to be interesting; more than anything I hope the new pistons' weight difference is a help, not a hindrance! The R.E. 650 is one of the smoothest bikes ever, that includes two BMW twins; a '71 R60/5 and a '77 R100S

[@motonumnum]

Thanks Fuzzy Biker, I'd always wondered what difference the big bore kit would make. I like the sound of that Lextek exhaust too - wahoo! back atcha

[@forgottenmotorcycles]

You're right, that exhaust did sound good. Vroom vroom!

[@asitadkar4976]

Man, this needs to be released in my country (India). RE's are very popular here

[@forgottenmotorcycles]

It's a really fun motorcycle. The owner has also installed a cam in it. We have a video of that coming out very soon. Wahoo!

[@Abhi_June]

Its already there bro. Check NMW racing they have big bore kits with all the racing components to make RE himalyan a 500 cc

[@steveschwartz2571]

I agree Fuzzy, if I need a top end rebuild I’d go for the upgrade, but happy with 411 for now 😊. Nice price for that bike!

[@forgottenmotorcycles]

I was pleasantly surprised by the way the increase in performance and by how the bike retained its Himalayan character. Wahoo!

[@Wheelo40]

This is a very exciting prospect adding some power to the Himalayan. I would love to have one, but power is the only thing holding me back. Thanks for the report.

[@forgottenmotorcycles]

It did run better. I'm trying to get a longer ride on this bike. Also have talked with a Himalayan owner that upgraded his camshaft. Will get together with him soon to see how that worked out. Himalayan racing? Wahoo!

[@AniruddhMalhotra]

​@@forgottenmotorcyclesso have you done this long ride What are your conclusions After 2 years is the bike is still fine or ruined??? If you see please answer Researchimg for big bore kita and camshaft upgrade

[@forgottenmotorcycles]

@@AniruddhMalhotra I know two people with the Big bore kit on himalayans. One is ridden at about a thousand miles. I'm not sure what the other guy has done. Both are still in good running order. I'll try to get down and get a video of one of those bikes soon.

[@AniruddhMalhotra]

@@forgottenmotorcycles yes please get the information Actually there are not much information specially for Himalayan on big bores The information there are mostly negative and scaring Only you showed it in good view I am looking to modify with big bore Hope you understand my confusion

[@chicknman72]

I want to do the big bore kit along with the cam upgrade.....but it won't happen any time in the near future....still want to get a nice set of hard panniers and enjoy it the way it is for a while.....

[@forgottenmotorcycles]

The Himalayan is stock form is a great bike. I love mine and plan to put lots of miles on her just as she it. Love these bikes. Wahoo!

[@chicknman72]

@@forgottenmotorcycles agreed ...that is why I am in no hurry 😁😁

[@sodothehivesonhisleg]

I'd really like to know how the vibrations are throughout the rev range. Definitely considering a big bore kit for later.

[@forgottenmotorcycles]

Very good question. This was something I wondered about too. After riding this bike around town I'd say about as smooth as before. Thinking I had that tach up around 6 once or twice. If I get another chance I'll see if I can take the bike out on the road. Wahoo!

[@mooseridesagain]

I'm very tempted by a similar kit (477cc) but it seems such a shame when the stock motor runs so well...

[@forgottenmotorcycles]

You're right. The stock bike works so well that I would not go out of my way to change it. If the bike ever did need a new top end though, I'd definitely take that opportunity to jump up the CC's. Wahoo!

[@toddzikas4428]

Love your work.

[@forgottenmotorcycles]

Really need a video of one of those killer KTM 500's. Wahoo!

[@pmfsify]

RE will launch a new Himalayan 450cc Liquid cooled engine and new chassis to with 40hp stock.

[@forgottenmotorcycles]

I'm liking that. Hope you're right!

[@Youtube_Globetrotter]

The old 411 looks alot better IMO

[@AniruddhMalhotra]

​​@@KZbin_Globetrottertotally agree I test ride today 450 It is shitty Weight on hands Looks are ridiculous like some chinese product Hurt my ankles many time as the placement of footrest are not good Not a long ride machine Why on earth they stopped manufacturing 411😢

[@AniruddhMalhotra]

Had you noticed any mileage drop ???

[@forgottenmotorcycles]

I didn't ride it long enough to check. I'm sure there is a little more fuel usage but it can't be that bad...I think. Wahoo!

[@JesusAlmadaKb]

You can give more diameter to the standar cilinder? i can't found more mechanic video from this.

[@forgottenmotorcycles]

Unfortunately I don't really have that information. I would contact Hitchcock's in England. They should be able to help you. Sorry

[@mg10117]

bag setup on the red bike is cool. more info please?? thanks

[@forgottenmotorcycles]

The bags are off Amazon: waltyotur PU Leather Motorcycle Right Left Side Saddle Bags Saddlebag Luggage Bag. The frame that the bags are mounted to is from Baxtercycle.com Look for the small metal racks for the Himalayan, I didn't want the larger racks for this bike. Easy to put on and work great with those bags. Wahoo!

[@soderholmd]

Where did this 462 kit come from?

[@forgottenmotorcycles]

I'm guessing Hitchcocks or Baxtercycle.com

[@blackeagle7765]

Why is there a ticking clicking clanking sound in high revs ?

[@forgottenmotorcycles]

Guess I didn't really notice that. This bike is still running and has also had a TEC cam added since this video was made. I'll pay attention to that next time I'm around that bike. Thanks

[@SCALE_SLOTCARS]

Your hearing something blowing against the mic or his helmet. Most likely helmet strap. It's not high revs problem your hearing its the wind blowing stuff at higher speed!

[@blackeagle7765]

@@SCALE_SLOTCARS I see

[@chanmoua]

I'm curious to how this affects top end cruising speed cause the low cruising speed is the only reason why I didn't go with this bike.

[@forgottenmotorcycles]

He has a lot more high end power and is actually thinking of raising the gearing to get more top speed. Feels that with the big bore and Tec Cam the bike has plenty of power to handle the higher gearing and speed.

[@BoatingBiker]

The big bore kit is a great addon! Did you forget your gloves?

[@forgottenmotorcycles]

The bike was a hoot to ride... Yes, forgot the gloves. Wahoo!

[@2005BobDole]

What is the new top speed? I could only get it to go to 73mph when I test drove it and I really want it to break 80 for me to buy it.

[@forgottenmotorcycles]

That is an interesting question with an ambiguous answer. I could get 76 mph over and over. I did get it to 78 a few times and to 81 once. Could not get it to do any more. Friend rode the same bike and had the same results. He was able to get it to 81 once but it was 76 consistently and 78 occasionally. One thing I'd say about this is that with the aftermarket exhaust it did get up to 76 without much problem. I'm a 220+ lbs rider. Wahoo!

[@2005BobDole]

@@forgottenmotorcycles thank you so much for that answer! I really like this bike but I just want a bit more power for the highways.

[@forgottenmotorcycles]

@@2005BobDole I would take a serious look at the Royal Enfield scram 411. That bike has about twenty percent more power and weighs about the same. After that maybe an Interceptor 650

[@2005BobDole]

@@forgottenmotorcycles so if I put the big bore kit and cam on a scram I shouldn't have much issue cruising around 80?

[@forgottenmotorcycles]

@@2005BobDole I'd try the cam and a taller gear on the sprocket. A lot of Himalayan people are doing that just for the speed. However, if really interested in cruising at 80 mph I'd take a serious look at those beautiful Interceptors. Probably easier to ride too. Wahoo!

[@steveogrady893]

Had thought about the kit a while back, but the cost balanced against how happy i was with stock engine put me off. That was then. In a shamefully moment of carelessness, I didn't check the oil and the cost me the engine... I figure I can either buy a used engine, or upgrade with the big bore and a tech cam.. Suddenly it doesn't look so unappealing.

[@forgottenmotorcycles]

Do it. You'll love it. Friend of mine bought that bike in the video and put the cam in it. It's a real hoot of a motorcycle now. Love it!

[@MrNoddy1983]

Does any changes in bhp?

[@forgottenmotorcycles]

We think there is a slight increase in horsepower. Enough to notice but not a lot. I know the new owner of this motorcycle and we're going to try to do some testing with it this summer. More videos to come :-)

[@forgottenmotorcycles]

Wahoo

[@guruprakash9290]

Hi I am from India I would like to know the power figures like how much horses and torque it produces compare to the stock

[@forgottenmotorcycles]

I'm not sure how much of an increase was produced with the kits. Would say that both torque and HP was up by as much as 10% maximum. You could feel it for sure. This bike would be faster than any stock Himalayan. Wahoo!

[@guruprakash9290]

@@forgottenmotorcycles so it can cruse at 120 kmph without much struggle am I right buddy ?

[@forgottenmotorcycles]

@@guruprakash9290 yes, I think that would work.

[@jfddelaney]

Hitchcock’s have a video mentioning the kit and show the dyno figures.

[@anthonyperkins6364]

How much is the complete big bore kit ???

[@forgottenmotorcycles]

Hitchcocks Motorcycles has the sleeve & piston kit for about $400. Here is the link: accessories.hitchcocksmotorcycles.com/43166?ref_page=Himalayan

[@sboy1955]

Need to have the cylinder machined to accept the kit sleeve.. that would cost a bit?

[@vorrdegard2176]

Great I can buy a used himi and upgrade it

[@forgottenmotorcycles]

Go for it!

[@JeffGillis1]

Called Baxter’s but they apparently have no voice mail nor answering service?

[@forgottenmotorcycles]

They can get pretty busy sometimes. Is this the number you called? [phone] I would say try again.

[@jeremypendergast9129]

Jeff, sorry we close at 5 CST. I'm usually there a little late but had to run my family bti the airport this evening so I wasn't around after 5. Give me a buzz tomorrow a.m. I'll be in at 8 a.m. CST. Thanks! - Jeremy

[@Mytwistedvoices]

I have the 462cc the gas in my neck of America isn’t the best. I find that my Himalayan likes premium. If you buy it, run it on regular a few months then give a tank of premium a try. I suspect that not just a bigger bore but increased compression is also a result.

[@sharathbhat7568]

Horsepower......?

[@forgottenmotorcycles]

We don't know but think its at least 10% more. Really added to the bike.

[@RonMorgan]

this bike is for sale?

[@forgottenmotorcycles]

Yes, it is. I actually had to push it out of the showroom to take it for the ride. Pretty good price. I think they want $4,500. Baxtercycle.com give them a call

[@JeffGillis1]

For $4500 bucks who do I call to buy it?

[@forgottenmotorcycles]

[phone]

[@sboy1955]

Is it sold?

[@jrgunshot3348]

we dont have big bore kit in india sad life

[@forgottenmotorcycles]

Dang

[@corychartier7961]

CEAT is stock Indian manufacturer tire

[@forgottenmotorcycles]

Good tires?

[@syedwahidi4640]

Not too good but good

[@PeterRobertHall-x6p]

9

[@forgottenmotorcycles]

Wahoo

[@TechnikMeister2]

It begs the question, why didn't the Indians make it a 500 in the first place? As an adventure bike, it ticks most boxes except for power. It might be ok for navigating hoards of peasants in India or pottering on country lanes in England, but for countries like. Australia you can get fined for not not keeping up to the open road and motorway speed limit. It's all over at about 100kph, specially when loaded up. You don't want a 150 ton road train overtaking you on an outback highway.

[@forgottenmotorcycles]

The new Himalayan 450 may have 40hp. Can't wait to take one out for a spin.