| Author | Message | ||
     Sambodean |
correct, I meant the heads w/rocker arms etc all installed. And gotcha.Just didn't know if i needed a dial indicator to be precise on finding tdc and installing the rocker box. | ||
| Lynrd |
I have used a wooden dowel down the spark plug hole - no dial indicator. Right or wrong, with hydraulic lifters I did not consider it all that critical - just somewhere in the range where the piston will not come up any higher and has not yet started to come down. and wood because If I am going to stick something down the apart plug hole, I want it to be softer than the aluminum pistons it will be contacting. Go slow, though - breaking the dowel would be a drag (I've never done it...but I can imagine). | ||
| Sambodean |
Thank you again for all the helpful information. I'm assuming with installing all this newish stuff, I need to toss my old pushrods, and invest in some adjustable ones? I'll be using the stock top end rebuild kit from harley. Any suggestions on what adjustable pushrods to get? | ||
| Lynrd |
Mark the stock pushrods as they come out. If you put them back in, make sure they go in the same holes. Roll them on a sheet of glass and verify that they are straight. If they are, they can be re-used. Adjustable pushrods + hydraulic lifters - that way madness lies, and on the way also comes multi piece push rod covers. There was just a thread regarding same - not a lot of fans of adjustable pushrods with hydraulic lifters. | ||
| Phelan |
adjustable pushrods add weight and lack strength in comparison to regular ones. They would be handy in a shop for measuring the right size pushrods for a custom height build to order new non-adjustable ones, but otherwise are a waste IMHO | ||
| Sambodean |
so basically, if they are not bent, i can reuse them with the new setup and stock gaskets? Awesome  | ||
| Lynrd |
Yep - just remember to let the lifters leak down every time you turn the engine at all. If the pushrods are bent - that is how they got that way. | ||
| Sambodean |
I have to say, I'm loving the support community for buells  . The only other community thats come close, was for my old Honda xl600, but thats a whole different animal in itself. | ||
| Rocket_in_uk |
I am a fan of adjustable pushrods which is why my Buell has these. http://www.riveraprimoinc.com/Taperlite_Evo_instru ctions.pdf They're superb for a number of reasons, but not necessary over stock without good reason. No need for fancy covers with them either. You can use the collapsible Sportster ones. Rocket in England | ||
| Sambodean |
So, in going through my electrical connections, I found one thats been screwed with. I'm trying to figure out what it went to, and if its important or not (it wasn't connected). Someone spliced into it, but then cut it and never used it. The factory colors on the wires are black, and yellow/green.Any ideas?  | ||
| Sambodean |
Ps, thanks for the info rocket! | ||
| Sambodean |
Additional update. Took the heads with pistons to hannans. Bill, told me that the compression is going to be way too high, and I should opt for stock 10deg thunderstorm pistons. Anyone have some laying around so I don't have to shell out 300 for some new ones?also, he wanted to know what cams were in it, I just told him what I read, which was they have se cams? Anyone know what exact cams the s1's came with? Thoughts and input on this? | ||
| Lynrd |
Paul will want to know the lift on the cams, mostly, so they can make sure the springs won't bind. I do not know that number - it MAY be published in the service manual. | ||
| Sambodean |
N4 Grind Cam Intake: Open: 30 degrees Close: 46 degrees Duration at .053: 256 degrees Valve Lift: .490 Exhaust: Open: 52 degrees Close: 24 degrees Duration at .053: 256 degrees Valve Lift: .490 Can I get confirmation on this? | ||
| Phlegm |
That electrical connection may be the kickstand switch. | ||
| Rocket_in_uk |
Bill, told me that the compression is going to be way too high, and I should opt for stock 10deg thunderstorm pistons. Sounds like you've got a mechanic who knows what he's doing. These would suit if you get those heads sorted, or choose to clean up your damaged one and go with your originals. http://www.ebay.co.uk/itm/Harley-Buell-S1-White-Li ghtning-Wiseco-Pistons-96-98-3-498-10-1-/390397368 021?pt=Motorcycles_Parts_Accessories&hash=item5ae5 7f16d5 Rocket in England | ||
| Lynrd |
Rocket, I think you'd like the guys at Hannan's. They are the real deal. Of course, they are not as sensitive to other peoples feelings as you are.... Paul's shop motto - "Basics no bullish*t" | ||
| Sambodean |
Rocket, he said he could get me the same type of pistons for around the same price. I still haven't talked to Paul yet. Bill seemed pretty cool though, I'm assuming he'll ask for Paul's opinion, and thats when ill get a call back. Bill seemed skeptical about being able to machine those and even making those heads work with slightly domed pistons, and that i might have to end up using flat top pistons. One question, Did the thunderstorms originally have 10deg or 15deg domes? | ||
| Rocket_in_uk |
My memory isn't that good, lol. I've not seen a TS piston for something like a decade or more. A quick Google tells me the TS head has a 15 deg angle. Someone in the know will pipe up and confirm. Your engine builder will sort all the tech stuff, so you shouldn't need to concern yourself other than perhaps to say what power you want and where you want it. Rocket in England | ||
| Rocket_in_uk |
Of course, they are not as sensitive to other peoples feelings as you are.... What can I say. I'm a lover not a fighter  Rocket in England | ||
| Sambodean |
Still waiting to get word back from the machine shop, in the mean time I'm doing a lot of little things, one of them is converting the bike back to the stock pulley system (guy before me put a chain drive on the bike). I got a rear pulley and belt from a thunderbolt but still need to get the front pulley. Anyone have any idea what years are compatable with the s1(will an xb work)? Any input on number of teeth? My commute is mostly highway, and in cali, you can split lanes, so ill rarely be starting off from a complete stop. | ||
| Lynrd |
The stock one is 29T - and any Sportster from 91-2004 had the same pulley. HD part # 40202-91A | ||
| Sambodean |
Just spoke with hannans. They'll be able to machine the heads to fit the original 30deg domed pistons i bought. hopefully, the starter and battery will be up for the job. The bore on the cylinders was 13 over? retarded...obviously ill be boring it out to 20 over and getting rings to match. All thats left is the inspection (hopefully valves and everything come out good) and actual work. I'm assuming I talked to "paul" this time. He spoke more confidently and was less questionable on whether the application would work together. | ||
| S1owner |
Stock s1 is 27 t not 29. If you need a 29 I have one | ||
| Phelan |
Thunderstorm motors had 15* squish bands in the heads with 10* squish on the pistons, due to the castings not being the most accurate. | ||
| Rocket_in_uk |
They'll be able to machine the heads to fit the original 30deg domed pistons i bought. With those pistons and good head flow (have you asked about how much the heads are flowing as now is the time to port them if the numbers need improving) you're only a few components from having a very torquey and powerful motor. A good choice of cams, 42mm Mikuni and a good pipe will have you around 100rwhp you know! Rocket in England | ||
| Sambodean |
Rocket, i can't wait! anything will be an improvement on how the bike was. Im used to a bike at least doing a power wheelie in first gear, most in second if i snap the throttle, but this one never could? I'm guessing there was a lot more wrong with the bike than I originally thought. Anyways, the heads were a lot smoother (at least on the intake side) than stock, and paul noted that they were already ported, but said the job could be done better, and that option was left on the table to talk about later. What kind of cams are a modest upgrade from the andrews n4? i like torque more than anything, and from my understanding, the n4 cams do a pretty good job in both worlds, but allowing it to rev to 7k. | ||
| Sambodean |
thanks for the info phelan, I was having trouble finding accurate information on the squish band. I'm a little confused though, didn't the pistons have reliefs cut for the valves just for the reason you were talking about? or is that only aftermarket pistons? | ||
| Rocket_in_uk |
I'm well out of touch with cams available today Sam. I went with N9's and like them 15 years later! Your engine man will have some idea of what's best with those pistons, and how and where you want the performance. No doubt you'll find great info archived here on BadWeB and someone far more knowledgeable than I will likely chime in. Rocket in England | ||
| Brother_in_buells |
Here is some info about squish bands and cams. http://www.ukbeg.com/forum/viewtopic.php?f=7&t=114 66&hilit=Son+of+the+grenade |
