Need more power!!!

[Dan Hodges]

Flame Out

Yeah I know all that Dan and most of the GOOD info I have and the mods that make the most difference I got off your posts.But if I post it then I will get flamed for doing something wrong or different.I don't care what people think but when I have to constantly explain myself it just takes the fun out of it and that's the reason I do it in the first place.(just for fun)Thanks for all your help.

Terry

When you post something on here it gets what I call peer review and some will question the benefits of whatever it is that you have stated but I don't believe you could call that getting flamed.

I've posted stuff myself that others questioned and if they had a basis for their difference of opinion I would listen however if whatever they were talking about was just an opinion and they had no hard evidence to substantiate or support their opinion/theory I shut up and moved on.

If I tell people that if you cut the cylinder head .028 the cam chain will be too long and that you will have to advance the cams to accomodate for same and they don't do it I could care less.

I've been building big block Chevrolets for over 30 years and messing with motorcycles longer than that and I'm still on a learning curve and one principle I've always adhered to and that is, listen to others, you might learn something and even I who should know it all but doesn't have learned a great deal from members of this forum.

I must admit that when I read some of these post I find them somewhat amusing and say to myself, that's the most stupid thing I've ever heard of but then I remember how steep my learning curve once was I can appreciate their befuddlement.

I always respect the opinions of others however if you tell me you can make a 100 hp to the ground with an XS by bolting on a set of Susuki carburetors and some kind of aftermarket exhaust without a dyno test I will tell you that you are full of baloney because I've been there and done that however I would not call that a flame job.

A motor is the sum total of it's parts, how it's machined and assembled and when it comes to making horsepower with a 2 valve head there are few secrets left in the bag.

Porting the head on an XS is not rocket science but you better know what you are doing and have a flow bench to check your work otherwise you will wind up with an expensive door stop.

There is nothing wrong with being different as long as you accomplish the required end result. Some guys use gapless 2nd. rings because they like to be different however they never actually test the results in an A to B test but insist they work better.

There is actually only one way to properly finish hone a block for the rings used in a Wiseco big bore kit but you can go on various web sites and find at least half a dozen.

One should not be afraid that someone might find fault with his opinions or judgement and I for one have never taken offense when someone disagrees with me but will ask for the basis of their disagreement.

Having you mods peer reviewed is a benefit to us all but you do what you think best.

[tw1980]

I will do what I think best,and thanks again Dan.

Terry

[trbig]

I will do what I think best,and thanks again Dan.

that's the most stupid thing I've ever heard of

Yeah, I crack me up.. and THAT is what really matters, right?


Tod

[kirmit77]

Easy HP addon

Well, after going to the local car shows around here I have found a good, easy and cheap way to add horsepower.....

STICKERS AND BODY KITS!!!!



Just think... those guys in civics are getting about 15 HP a sticker X 30 stickers = thats an easy 450 Hp


just think, those crotch rockets will be torn up if we just add a couple stickers


this is funny
http://images.wikia.com/uncyclopedia...50px-Ricer.JPG

[MindWebs]

Now i get it!!!!!!!!!!

i had a buddy that did that to his ricer..

Hee hee hee....

i smoked him with my 97 chevy 1/2 ton reg cab long box 4x4 auto..... 4.3L V6

he must have used the wrong body kit.....

oh, i remember now!!! he messed up and repainted the car and kit!!!

$2800 paint job on an 86 toyota celica(i think) with the original engine in it.. oh but he did have a fart can on it!!

anyway... back to the point gents..

These bikes are VERY powerfull!!
try this little expiriment..

roll into town in 5th gear and now slow the bike down till you are at 1000rpm
STILL in 5th gear, now accelerate.

i did this on mine and it pulled rate back up to speed.
No studders, no hickups, no "barfing", just rolled right back up to speed.

that takes power.

but like dan said.. these are 30 year old machines, cut them some slack!!!
the only 30 year old bikes that can compete with the rockets are the kawy H1/H2 500 and 750 triple 2 stokers, but they imploy VERY different technology to run, and they DO NOT corner!!!! and you will get sore riding them(real qwik at high rpm)

so gents i suggest you pick your street races carfully, these bikes are mighty but they have they're limits as well.

I'm sorry for pointing this out..
Webs

[yamahansolo]

katana 600's don't have 110 hp and they are very heavy. they only have around 60 hp and they weigh almost 500 pounds! the information is out there, just go look it up. i have about 50 motorcycle mags and there are all kinds of track numbers weights measurements etc...

cbr 600 rr's, r6, zx6's the new ones all run in the high 10's the 03 r6 according to a bike mag of mine only ran an 11.03 1/4 mile. the yzf600r i had would run 11.3 as well as the fz6,
katana's are boat anchors. if you got smoked by one your not launching right!

not trying to be rude but it has alot to do with the rider! as i said there are alot of write up's in the mags and the numbers will shock you.

sure if you go up against a super sport 600 you will probably be toast if the guy knows how to launch. but chances are they will be young and not be able to launch well.

go to bikez.com and look up different year bikes and there weights and hp and torque. the 600's only put about 40-48 to the crank.
and i am not saying you'll beat them in the twisties either... i can't keep up with my friends ninja 250 in the mountains but i can scream past him in a straight line very easy!
it also depends on your bike the 78's and 79's were the fastest. plus when you get rid of the heavy 4-2 exhaust and put on a light weight kerker and get rid of the huge airbox and stock rotors you can drop alot of weight.

[trbig]

and get rid of the huge airbox...

I've heard of a couple reasons to get rid of the airbox, but to drop something that weighs, what... a pound maybe for weight purposes? You'll get the best performance with an airbox that is flowing correctly, so you're better off going and taking a dump before you race.


Tod

[aussixs11G]

leave the airbox alone

I'm with trbig on this one - my mates who have gone the pod have found that its ok at rest but when the air moves over the pods at different angles difficulties occur - fixed mostly be replacing the airbox shell to provide still air around the pods - the vector sum of the gain (with pods) being zero of close to it.

[foreda]

Crotch Rocket Race

Here is my $.02 worth again... These bikes (at least mine are) are 30 yrs old and older. In their day, they were king if the hill. Technology has changed that and the technology used 30 yrs ago is pretty much what limits the amount of horsepower one can get out of an XS 11 engine. My point is, if you want to race the modern day rockets with a thiry year old machine, you better have plenty of money to lose!!

[aussixs11G]

I concur..

Feroda is correct - the only place where our machines shine is in the company of similar vintage machinery - my Club Laverda mates have grudging respect for my machine as it is more reliable (touch wood), more powerful (by a large measure) and (now) handles as well as theirs - the limitation is in the rider.
Having said that, on a run, I still blow away and out handle a lot of more modern machinery (and younger riders)
some of my mates are anal about "Italian" vs basically "the rest"
it's fun to bring them down to earth now and then.

[DGXSER]

Really, I like to twist the grip and I do take mine for the occasional run into the upper rpms. I will say that I was on the highway next to a GSXR 1000. We got stopped in traffic and chatted a bit while waitign for things to clear. When it cleared up I was ahead of him so I hit the throttle pretty solid all the way up to about 7k or so in 5th with the 750 FD. He was back a bit by that point....lurking....waiting for me to top out I think....then he blew past like I was sitting still.

I do not care what you do to that bike, it ain't gonna gain THAT much. JMHO, and no Dan, I do not have numbers or facts to back it up Just gut feel after running alot of different cars and seeing several peek out on what you can do with en engine.

I just like knowing my bike looks SO much better (to me) than those plastisized things and I can ride for hours with no back issues, he was complaining about 30-40 minutes. That and to me, mine sounds SOO much cooler.

[madmax-im]

Dan...I always appreciate people who share their knowledge and encourage honest discussion of the topic at hand...to me that is the true spirit that reflects the majority of people here. Others who pprefer to keep things to themselves do so and their contribution to the collective knowledge is neglegible. No one should be in fear or criticism when its done in a constructive manner...as long as one has an open mind..its all good!

[yamahansolo]

ok the airbox is alot more than a pound. i have it and the many parts sitting on my shelf in the garage.

and just because the bike is 30 years old doesn't mean anything. mine had about 8000 miles when i got it. i have now got about 23,000 miles on it. i have personally smoked several 600cc crotch rockets. the stock 1/4 mile times were like 11.7 so do you people really think if you take an 11.7 second bike. drop about 40 pounds of weight. do a rejet and pods and it will net you 13 sec 1/4 mile runs? i ride mine everyday i can and it's very streetable. it pulls really hard from start to redline! so i guess you boys with old chevy chevelle's better watch out for the sticker rice boys out there because they have new tech stuff! i am sad by all this... have none of you read bob's book?

[trbig]

Nobody said anything about 40 pounds. What we (Or me anyway) talked about was the air box, and no, the thing isn't very heavy. BUT.. you'll have a heck of a time achieving that 40 pounds. The 40 pounds you want to lose is what gives the best performance.. stock exhaust.. airbox.. etc. As I said.. skipping a meal will get you about the same results. The HP you LOSE by removing the airbox and going to pods, more than negates any weight you're taking off with it.

Yup.. read Bob's book. The XS is a great all-around bike. I don't think there's anything else out there still that compares to them. Yeah, they were fast/strong in their day, and still aren't slouches, but all things equal, from stop light to stop light, most modern sport bikes are going to smoke you. Sure, you'll beat some, but when many of the bikes nearly half our CC displacement are cruising the 1/4 mile a full second or better than your 11.7 time.. .I don't understand what your disappointment is all about. Facts are facts whether you happen to like them or not?

As stated, one rider on a slower bike can beat one with less experience on a faster bike sometimes.. but all things equal, our bikes just can't hang with the big boys any more. Doesn't mean they aren't still fun or won't still beat up on a lot of bikes out there (Namely V-twins), but no.. they aren't that bad any more. Anyone who thinks they have even a slight chance against anything in the 1000cc range or more sport bike is in absolute denial. My neighbor's GSXR 1000 can do my max speed in FIRST GEAR, and have enough HP to easily flip it over backwards at any point in between. And most of the sport bikes that are out there are close to half the weight of our bikes. Even though they(600cc class) may have a few less HP.. half the weight with a young skinny rider is going to make up alot o fthat HP difference. My neighbors GSXR has a dry weight of @ 390 pounds... About equal to my bike with the engine out of it!


Tod

[foreda]

Crotch Rockets

Well put TR.. Exactly the point I was trying to make in my earlier post. In it's day my 78E was the baddest motor around my part of the country. That was then, this is now. I have put out a lot of money restoring my machines and I ride them like a 55 year old which is what I am, a 55 year old. My macho racing day's are over. So if you want to pass me, come on by.