The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Era Specific and Model Specific > Ironhead Sportster Motorcycle Talk (1957-1985)
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

Active Threads
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 1 Minute Ago
Replies: 31,973
Views: 3,709,839
0 Keep & Kill
Last Post: DEEP DIVER
Posted On: 24 Minutes Ago
Replies: 24,526
Views: 1,448,303
0 How many Sporty seats ya got for one ass?
Last Post: Gold Member
Posted On: 56 Minutes Ago
Replies: 275
Views: 63,895
0 What kind of saddle do you use on your sporty?
Last Post: speedyrette
Posted On: 59 Minutes Ago
Replies: 317
Views: 104,220
12 Lets see the "C's" XLC's that is. Pics Please!
Last Post: 99-883-c
Posted On: 1 Hour Ago
Replies: 1,262
Views: 512,739
0 Starter Relay?
Last Post: Andy56
Posted On: 3 Hours Ago
Replies: 2
Views: 56
0 1982 rubber oil hoses
Last Post: Gravitas
Posted On: 5 Hours Ago
Replies: 4
Views: 333
0 harley davidson 1999 883 5 speed transmission installation
Last Post: Hippysmack
Posted On: 5 Hours Ago
Replies: 6
Views: 96
0 33.4mm fork bushings
Last Post: Staffords
Posted On: 5 Hours Ago
Replies: 4
Views: 411
0 1983 Roadster
Last Post: Iron Mike
Posted On: 7 Hours Ago
Replies: 6
Views: 147
0 Ride report: Wheels Through Time motorcycle museum.
Last Post: Iron Mike
Posted On: 7 Hours Ago
Replies: 2
Views: 161
0 help with stuck engine
Last Post: motorfish
Posted On: 7 Hours Ago
Replies: 39
Views: 2,117
0 09 883L starts but dies, new fuel pump
Last Post: motorfish
Posted On: 8 Hours Ago
Replies: 1
Views: 86
0 Q cams in 73 xlh ??
Last Post: Ferrous Head
Posted On: 8 Hours Ago
Replies: 25
Views: 1,224
0 Food porn
Last Post: iNSaNeSHaNe
Posted On: 9 Hours Ago
Replies: 2,481
Views: 573,062
0 Oil leaking :-(
Last Post: sportsterpaul
Posted On: 10 Hours Ago
Replies: 20
Views: 1,268
0 1974 sportster vin issues! what the heck did I buy?
Last Post: Gold Member
Posted On: 11 Hours Ago
Replies: 66
Views: 3,349
0 HELP!!! 2019 HD Iron 883
Last Post: shanneba
Posted On: 11 Hours Ago
Replies: 9
Views: 285
0 What song do you have stuck in your head?
Last Post: iNSaNeSHaNe
Posted On: 12 Hours Ago
Replies: 2,407
Views: 254,968
0 who has NOT had problems with the XL
Last Post: Mr Dream Merchant
Posted On: 12 Hours Ago
Replies: 769
Views: 219,843
0 Stroker pistons
Last Post: Ferrous Head
Posted On: 12 Hours Ago
Replies: 43
Views: 2,438
0 Would you buy a Sportster S?
Last Post: iBloke
Posted On: 14 Hours Ago
Replies: 21
Views: 1,566
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: iBloke
Posted On: 14 Hours Ago
Replies: 51,910
Views: 8,736,523
0 "The Blues" thread!
Last Post: Stairman
Posted On: 15 Hours Ago
Replies: 1,058
Views: 137,429
0 Dunlop K81 Roadmasters? Anyone?
Last Post: ZTatZAU
Posted On: 17 Hours Ago
Replies: 12
Views: 631
0 Exhaust question
Last Post: kitabel
Posted On: 21 Hours Ago
Replies: 8
Views: 360
0 Hot Rods, Rat Rods, and Customs.
Last Post: Stairman
Posted On: 21 Hours Ago
Replies: 4,716
Views: 906,088
0 video & pics
Last Post: cal43
Posted On: 23 Hours Ago
Replies: 405
Views: 41,419
0 This is gonna hurt.
Last Post: cal43
Posted On: 23 Hours Ago
Replies: 8,877
Views: 2,068,337
0 Electrical problems.
Last Post: Gravitas
Posted On: 1 Day Ago
Replies: 23
Views: 1,554
More...
Members Birthdays
Papatony, chedd (76), Nevar (71), nrbase (69), Smokin-Smitty (64), kbfarkas (62), Irondreads (52), Tim97509 (51), CCM0021 (50), wandrur, bikerusn5 (38)
Reply
 
Share Thread Tools Display Modes
  #1  
Old 3rd September 2021
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 7,188
Sportster/Buell Model: XLB, XLCH, Sporton
Sportster/Buell Year: 1962
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1966
Other Motorcycle Model: XLCH (Another one)
Other Motorcycle Year: 1966
Reputation: 2645278
Ferrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond repute
Default The Strociek Project

Recently I decided that I need to increase the speed of my work on my projects.

With that in mind I've turned my attention back to the Strociek engine I bought off eBay a few years back. Originally it was with the intention of using it in a Period 4 (pre 1972) racing sidecar.

I applied for and was given interim approval to use this engine in P4. Most of the engines in P4 currently are Honda 4's, bored and stroked to around 1180 cc's. They develop about 130 HP so Motorcycling Australia decided I had no unfair advantage over the Honda's. (antiquated design I think they said)

I can't locate the original pictures of the engine so these are pics I took about a month ago so you can see what I'm starting with.




The electronic ignition was picked up in a later purchase. I've used one of the Mallory's before and think it's suitable for this engine.

Also the rocker boxes were a later acquisition. Engine came without rocker boxes.




The generator too is a later acquisition. I am still unsure about racing this thing (I can no longer race) and am thinking it would make an extremely nice street bike for someone in an XR750 frame. Road race style.
__________________
"I know only too well the evil that I propose. But my inclinations get the better of me."
Reply With Quote
  #2  
Old 3rd September 2021
thefrenchowl's Avatar
thefrenchowl thefrenchowl is offline
XL FORUM TEAM MEMBER
 
Join Date: Nov 2006
Posts: 3,099
Sportster/Buell Model: KHK
Sportster/Buell Year: 1954
Sportster/Buell Model #2: IronHead XLH
Sportster/Buell Year #2: 1978
Other Motorcycle Model: XLRTT
Other Motorcycle Year: 1966
Reputation: 382345
thefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond repute
Default

Go for it, Gene!!!

Engine looks a tad taller than std, what will it fit in, framewise?

Patrick
__________________
Flat Head Forever
Reply With Quote
  #3  
Old 3rd September 2021
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 7,188
Sportster/Buell Model: XLB, XLCH, Sporton
Sportster/Buell Year: 1962
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1966
Other Motorcycle Model: XLCH (Another one)
Other Motorcycle Year: 1966
Reputation: 2645278
Ferrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond repute
Default

When I first saw this engine for sale I was a little concerned about the missing rocker boxes. With obviously non original heads I was unsure that stock boxes would fit and thought hard about having to fabricate a set of rocker boxes.

The man I bought this from had zero knowledge of even what the engine was. He had no idea where it came from, who built it or what was inside. Real "pig in a poke" thing.

I think his description was something like "Complete Harley engine".

Well, obviously not complete and nobody else was interested in this weird thing. I was the top bidder basically because I was the only bidder.

But the minute I saw it I thought I knew what this was. There are no Harley engines built with both the intake and the exhaust on the left side of the engine.

It's quite nonsensical isn't it ?
Reply With Quote
  #4  
Old 3rd September 2021
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 7,188
Sportster/Buell Model: XLB, XLCH, Sporton
Sportster/Buell Year: 1962
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1966
Other Motorcycle Model: XLCH (Another one)
Other Motorcycle Year: 1966
Reputation: 2645278
Ferrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond repute
Default

Hi Patrick.

Yes, I had a panic attack just a few days ago as I already have a frame for this thing and it dawned on me I hadn't done a measure. Didn't matter originally as I thought I was building a frame for it.

Whew ! Stroke of luck. Quick use of just a tape measure tells me I'm OK. I even bought some 79 engine mounts to do a quick install into the frame to see what's what.

(Top rear won't work due to the central plug location)
Reply With Quote
  #5  
Old 3rd September 2021
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 7,188
Sportster/Buell Model: XLB, XLCH, Sporton
Sportster/Buell Year: 1962
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1966
Other Motorcycle Model: XLCH (Another one)
Other Motorcycle Year: 1966
Reputation: 2645278
Ferrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond repute
Default

I am hoping others will chime in as I may need some help with this.

While the engine is mostly complete the valve train isn't.

It cam without rocker boxes (or shafts and arms) lifter blocks, push rods, tubes etc and no valves or springs.

Oddly, it did come with cams installed. I say oddly because they are "XL" cams.

Now, everyone knows XL cams are the mildest available for an Ironhead. Makes no sense in a performance engine.
I did a measure on a set of Xl's years ago and they really aren't that different to the "P's". Certainly not enough to get excited about

And the cams worried me. I was thinking Strociek hadn't got that far down the track with this engine and they were just "place holders."

Or maybe someone else swapped out the "good ones" and stole the rocker boxes to boot.

But yesterday I was cogitating on the heads which have a shallower valve angle.

When I first got my hands on the engine the head hadn't been torqued down so they immediately cane off. They look like this.



At first glance, not that much different to a stock Ironhead. Right ?

And I figured I was going to have to work out the valve train and thinking my Trock valve travel checker would come in handy.

But of course, this doesn't fit. The ends of the valve tips are not in the same place as they would be on a stock Ironhead.
Reply With Quote
  #6  
Old 3rd September 2021
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 7,188
Sportster/Buell Model: XLB, XLCH, Sporton
Sportster/Buell Year: 1962
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1966
Other Motorcycle Model: XLCH (Another one)
Other Motorcycle Year: 1966
Reputation: 2645278
Ferrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond repute
Default

So, now I have to wonder what Ivan was thinking. Or did.

My first best guess is rocker arms with a different length on the valve side. This would alter the arm ratio and effect cam lift.

Or he might have made or considered shafts in a different location.

I would dearly love to be able to ask him.
Reply With Quote
  #7  
Old 3rd September 2021
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 7,188
Sportster/Buell Model: XLB, XLCH, Sporton
Sportster/Buell Year: 1962
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1966
Other Motorcycle Model: XLCH (Another one)
Other Motorcycle Year: 1966
Reputation: 2645278
Ferrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond repute
Default

The engine came minus the primary drive. Tranny is installed and feels good.

I suspect someone might have "robbed" the primary from the engine. Fortunately I think I have everything necessary to install a primary setup.

It has been set up for a remote starter and I will keep that. Just missing the seal and seal holder as well as the crank nut. Although my plan includes a Techcycle starter and a battery big enough to spin this thing.

Also wanting to use a compensating sprocket so the remote setup might not be doable with that. We'll see.
Reply With Quote
  #8  
Old 3rd September 2021
kitabel kitabel is offline
Land Speed Record
 
Join Date: Oct 2019
Posts: 728
Sportster/Buell Model: 883 Evo
Sportster/Buell Year: 1989
Reputation: 169824
kitabel has a brilliant futurekitabel has a brilliant futurekitabel has a brilliant futurekitabel has a brilliant futurekitabel has a brilliant futurekitabel has a brilliant futurekitabel has a brilliant futurekitabel has a brilliant futurekitabel has a brilliant futurekitabel has a brilliant futurekitabel has a brilliant future
Default

The stem ends not in the OEM position can be due to different stem angle, or simply to stem length. I would consider this job #1: what's the angle (and are they mirror images)?
Reply With Quote
  #9  
Old 3rd September 2021
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 7,188
Sportster/Buell Model: XLB, XLCH, Sporton
Sportster/Buell Year: 1962
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1966
Other Motorcycle Model: XLCH (Another one)
Other Motorcycle Year: 1966
Reputation: 2645278
Ferrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond repute
Default

Somehow, I have lost my original notes on this thing (I'm old) and couldn't remember what size it was so did a quick check again on the flywheel numbers.

-6 S&S. 4 5/8ths.

But that got me thinking about what rods were used and thinking they would be S&S (why not ?) I decided to lift one cylinder just a bit to confirm this.

Well, that didn't confirm that. I saw this:



Looked like nothing I recognised. Had me dumbfounded.

For a start they looked too skinny to me. And the surface finish was a weird texture. (Well, to my eyes). Not forged, not fabricated, bot shot peened, not polished.

Luckily for me there are smarter guys here than me.

Brucstroudt picked it up first. MrMom and Iron Mike then confirmed them as "boxed" rods with an explanation of why he used them. Thanks Guys.
Reply With Quote
  #10  
Old 3rd September 2021
thefrenchowl's Avatar
thefrenchowl thefrenchowl is offline
XL FORUM TEAM MEMBER
 
Join Date: Nov 2006
Posts: 3,099
Sportster/Buell Model: KHK
Sportster/Buell Year: 1954
Sportster/Buell Model #2: IronHead XLH
Sportster/Buell Year #2: 1978
Other Motorcycle Model: XLRTT
Other Motorcycle Year: 1966
Reputation: 382345
thefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond reputethefrenchowl has a reputation beyond repute
Default

Thinking sideways here, Gene....

Rockers... Valve angle on your engine is smaller than stock 90 deg heads?

So valve tips are nearer the rocker arms axis?

If so,o, shorten length of rocker arm over the valve sides, or cut arm and reweld with smaller arms...

Then rocker ratio might well be 1 or less, so would require a taller cam lobe than std to lift valve enought...

Mine field!!! I would rather move the rocker axis nearer the centre of the head to keep inertia low as on std rockers...

So shorten both arms of each rocker to keep 1.5 ratio...

More work indeed!!!

Patrick
Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT +1. The time now is 12:18.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC