I ship to Canada I ship to United Kingdom I ship to Australia I ship to Japan I ship to Belgium I ship to Germany I ship to Denmark I ship to Finland I ship to France I ship to Greece I ship to Italy I ship to Netherlands I ship to Norway I ship to Portugal I ship to Sweden I ship to New Zealand I ship to Spain I ship to Switzerland
Harley-Davidson Flathead 45 & 80 Books: over 10,000 copies sold
Famous Booklets

by

Jeffrey Diamond

“Harley-Davidson” name for reference purposes only.
Not affiliated with Harley-Davidson Motor Co.


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Your “obsolete” Harley-Davidson OHV & flathead V-twin, older British bike, Chrysler “poly” V8 engine, or older Chevrolet “stovebolt” OHV six-cylinder engine is capable of surprising speed & power, without loss of original appearance or reliability. Over 50 years of research and experience has gone into these booklets. They are the original, best, and most complete technical literature you can buy to get the most from your classic vehicle.
    Before making any decisions about modifying (or even rebuilding) your motor, get the best help available, and do it right the first time. In some cases, more details or a complete list of contents is available; click the booklet cover.
    Please note: these are not “coffee table books” or repair manuals, they are research tools for those who seriously want to improve the efficiency of their engines. They are all stapled paperback construction (except for .PDF and .xls files, as noted) to reduce printing costs.
    Click the subject category below, or click on any cover for a complete list of contents.
    The actual postage charged by U.S.P.S. for 1st Class Mail (or selected service) is the only addition to the price; there are no “handling charges”.

Harley-Davidson products

British motorcycle products

Automotive products

“Transmission Ratio Analyzer”

; is in Microsoft Excel .xls format. This product is available for many popular motorcycle transmissions including Triumph, BSA, Yamaha, Norton, and Harley-Davidson big twin & Sportster. It already includes the number of teeth on all gears and accepts engine RPM, sprocket choice, and wheel diameter as variable inputs, compares all possible internal ratio choices for RPM change on a shift (both in percentages lost and recovered, and the actual RPM in the new gear), lowest RPM reached in the entire range, speed in MPH reached in each gear, overall gear ratio including final drive sprockets, etc. Click the logo for a complete list of available products.

Transmission ratio calculator

Harley-Davidson products

“Breather Timing for High Performance”

; for all 1937-73 Harley-Davidson 45 & UL flathead engines. All 1954-73 KR, KHR, XLR, and early XR factory racing engines had very different breather systems than their flathead ancestors. Learn how they work, and how your factory parts can be modified to increase performance (sorry, the OHV big twins utilize the same basic system, but the parts are completely different, and no advice is offered for knucklehead, panhead, or shovelhead).

Breather Timing for High Performance

“The Linkert Book”

; is my complete booklet on the Linkert (L&L) bronze Model “M” carburetor, as used on all Harley-Davidson motorcycles 1933-56 (and some until 1964). This includes: Knucklehead 61” & 74” 1936-47; Panhead 61” & 74” 1948-64; VL Flathead 74” & 80” 1930-36; 45” Flathead solo, military & Servi-Car 1933-58; K, KH & KR Models 1952-65; U-Series Flathead 74” & 80” 1937-48 (sorry, not Sportsters).
    Although I’ve written this primarily for H-D models, the information is generally applicable to Indian Chief 74” & 80”, Scout 45”, Junior Scout 30.50”, Motoplane, 841 & 741 Military, and Four Cylinder. Click the cover picture for complete details.

Linkert Book for Harley-Davidson and Indian: over 10,000 copies sold

“45 Performance”

; is the complete edition of 45 power & speed booklets, subject titles including strokers, relieving, porting, factory hot parts, big valves, motor data, bore & stroke chart, sprocket ratio chart, transmission ratio charts, racing specs, service tips, more. Your “obsolete” 45” side-valve is capable of surprising speed & power, without loss of original appearance or reliability. Over 30 years of research and experience has gone into this booklet. It’s the original, best, and most complete do-it-yourself literature you can buy to get the most from your Harley-Davidson 45. Before making any decisions about modifying (or even rebuilding) your motor, get the best help available, and do it right the first time.

Harley-Davidson 45 Performance: over 2,000 copies sold

    This book is not a repair manual, but goes far beyond into fine tuning, improvements and modernization. Use it with your service manual for best results. Not an expert mechanic? You’ll still find many improvements you can make yourself with common hand tools. Click the cover picture for complete details.

“45 Performance” or “80 Performance” + “The Linkert Book”


Buy both at once and save money. Click a cover picture for complete details.

Linkert & 45 Performance Books for Harley-Davidson: over 10,000 copies sold Harley-Davidson 80 PerformanceLinkert + 45 Performance Books for Harley-Davidson

“80 Performance”

; is the complete edition of 1937-48 U-Series power & speed booklets, subject titles including strokers, relieving, porting, factory hot parts, motor data, racing specs, more. Your “obsolete” 80” side-valve is capable of surprising speed & power, without loss of original appearance or reliability. Over 30 years of research and experience has gone into this booklet. It’s the best do-it-yourself literature you can buy to get the most from your Harley-Davidson UL. Before making any decisions about modifying (or even rebuilding) your motor, get the most help available, and do it right the first time. This booklet is not a repair manual, but goes far beyond into fine tuning, improvements and modernization.

Harley-Davidson 80 Performance

    Use it with your service manual for best results. Not an expert mechanic? You’ll still find many improvements you can make yourself with common hand tools. Click the cover for details.

“45 Performance” + “80 Performance”


Buy both at once and save money. Click a cover picture for complete details.

45 + 80 Performance Books for Harley-Davidson45 + 80 Performance Books for Harley-Davidson: over 10,000 copies sold

“Mikuni Tuning for Harley-Davidsons”

(and Indian Twins); for the 30-44mm Mikuni round-slide “VM” type carburetor. Want more performance from your Harley-Davidson Knucklehead, Panhead, 45, etc.? Already have a Mikuni carburetor, but don’t know how to adjust it? Doesn’t run “right”, and won’t respond to the changes you’ve made? Can’t make any sense of the original Japanese “instructions”? Looking for an affordable alternative to replacing or rebuilding your tired Linkert? If you’ve considered using a Mikuni, you should read this. Click the cover picture for complete details.

Mikuni Tuning for Harley-Davidsons

“British Transmission Ideas for the Harley-Davidson 45”

; my comments, hints & shortcuts to installing an early non-unit British 4-spd. box from a Triumph, BSA, Norton, Royal Enfield, etc. in your 45 solo for hand-clutch & foot shift operation, better acceleration. Compares all four of the the stock and close-ratio H-D factory 45 transmissions 1934-73, with calculations. Also explores some possible complex mods including a medium-close 3-speed without using any factory WR parts, and constructing a 3-speed + overdrive transmission from the common 1941-* 3-speed. Click the cover picture for complete details.

45 Transmission Ideas

“The 45 Magnum”

my comments on installing 900cc 1957-71 iron Sportster cylinders & heads on 45 lower end for killer performance and appearance, very compex, requires heli-arc welding, machining and frame modifications. Includes dimensions, list of required parts, illustrations and diagrams. Click the cover picture for complete details.

Harley-Davidson 45 Magnum

British motorcycle products

“BSA M20 Performance”

; want more performance from your M20 or M21 sidevalve single? This product explores bore & stroke combinations, increased compression, improved breathing, new updraft intake port, alternate factory cams, tuned intake and exhaust lengths, megaphone design, selecting transmission ratios and much more. Click the cover for more details.
BSA M20 Performance

“Super-Tuning Amal Monobloc”

Carburetors and Intake Systems for British Motorcycles; want more performance from your 1955-68 AJS, BSA, Matchless, Norton, Royal Enfield, Triumph, or Velocette single or twin with Amal Monoblocs? Already have 375, 376, 389, or 689 carburetors, but don’t know how to adjust them? Doesn’t run “right”, and won’t respond to the changes you’ve made? Can’t make any sense of the xeroxed generic 50 year old “instructions”? This booklet will help you. Click the cover for more details.

Super-Tuning Amal Monobloc Carburetor

“Super-Tuning Amal Concentric”

Carburetors and Intake Systems for British Motorcycles; want more performance from your 1967-* BSA, Triumph, Norton or Royal Enfield single, twin or triple with Concentrics? Already have 626, 928, 930, &c. carburetors, but don’t know how to adjust them? Doesn’t run “right”, and won’t respond to the changes you’ve made? Can’t make any sense of the xeroxed generic 40 year old “instructions”? This booklet will help you; click the cover picture for complete details.

Amal Concentric Carburetor Tuning

“Super-Tuning Amal Concentric Carburetors” + “Super-Tuning Amal Monobloc Carburetors”

and Intake Systems for British Motorcycles: buy both at once and save money. Click either cover picture for complete details.

Super-Tuning Amal Concentric CarburetorsSuper-Tuning Amal Concentric Carburetors

“Tuning Mikuni VM”

Carburetor and Intake Systems for British Motorcycles; for the round-slide carburetors. Want more performance from your older Triumph, BSA, Norton, Royal Enfield or Matchless? Already have Mikuni VM carburetors, but don’t know how to adjust them? Doesn’t run “right”, and won’t respond to the changes you’ve made? Can’t make any sense of the original Japanese “instructions”? Looking for an affordable alternative to replacing or rebuilding your tired Amal Monoblocs or Concentrics? This product will help you. Click the cover picture for complete details.

Mikuni Tuning for British Twins

“Amal GP”

Carburetor Tuning; want more performance from your B.S.A., Triumph, Norton, Royal Enfield, or Velocette with a GP carburetor? Already have a GP carburetor, but don’t know how to adjust it? Doesn’t run “right”, and won’t respond to the changes you’ve made? This product is a collection of all 13 GP original Amal factory documents, reproduced in .PDF format, which will help you. Click the cover for a larger picture on a separate page. Click the button below to purchase these files by PayPal for $9.95:
.
    This is not an actual, physical carburetor booklet, but 13 .PDF files which you can read and print from any computer or lap-top using “Acrobat Reader”.

Amal GP Carburetor Tuning
    The PDF format offers advantages over a printed product: the printed text and illustrations may be zoomed much larger permitting close inspection of fine detail. You can read and print it anywhere (doctor’s office, train station) on your smart phone or tablet.
    A download link will be e-mailed to you within 24 hours of receipt of payment. There is no tracking number. You must set your e-mail spam filters and preferences to accept mail from jdiamond@optonline.net. If you do not receive the file immediately, the problem is your e-mail. If you don’t understand what this is, don’t purchase it, there are no refunds.

“Amal GP2”

Carburetor Tuning; want more performance from your B.S.A., Triumph, Norton, Royal Enfield, or Velocette with a GP2 carburetor? Already have a GP2 carburetor, but don’t know how to adjust it? Doesn’t run “right”, and won’t respond to the changes you’ve made? This product is a collection of all 9 GP2 original Amal factory documents, reproduced in .PDF format, which will help you. Click the cover for a larger picture on a separate page. Click the button below to purchase these files by PayPal for $9.95:
.
    This is not an actual, physical booklet, but 9 .PDF files which you can read and print from any computer or lap-top using “Acrobat Reader”.

Amal GP Carburetor Tuning
    The PDF format offers advantages over a printed product: the printed text and illustrations may be zoomed much larger permitting close inspection of fine detail. You can read and print it anywhere (doctor’s office, train station) on your smart phone or tablet.
    A download link will be e-mailed to you within 24 hours of receipt of payment. There is no tracking number. You must set your e-mail spam filters and preferences to accept mail from jdiamond@optonline.net. If you do not receive the file immediately, the problem is your e-mail. If you don’t understand what this is, don’t purchase it, there are no refunds.

“Amal Spitfire GP2”

Carburetor Tuning; want more performance from your B.S.A. Spitfire equipped with the GP2 carburetor? Already have a Spitfire carburetor, but don’t know how to adjust it? Doesn’t run “right”, and won’t respond to the changes you’ve made? This product is a collection of all 10 original BSA factory documents, reproduced in .PDF format, which will help you. Click the cover for a larger picture on a separate page. Click the button below to purchase these 10 files by PayPal for $9.95:
.
    This is not an actual, physical booklet, but 10 .PDF files which you can read from any computer or lap-top using “Acrobat Reader”.

Amal B.S.A. Spitfire Carburetor Tuning
    The PDF format offers advantages over a printed product: the printed text and illustrations may be zoomed much larger permitting close inspection of fine detail. You can read it anywhere (doctor’s office, train station) on your smart phone or tablet.
    The file will be e-mailed to you within 24 hours of receipt of payment. There is no “hard copy”. There is no “print-out”. There is no tracking number. You must set your e-mail spam filters and preferences to accept mail from jdiamond@optonline.net. If you do not receive the file immediately, the problem is your e-mail. If you don’t understand what this is, don’t purchase it, there are no refunds.

“Amal TT”

Carburetor Tuning; want more performance from your BSA, Triumph, Norton or Royal Enfield with a high performance TT carburetor? The TT carburetor is the descendant of the “RN” (= “remote needle”) model carburetor, and the ancestor of the famous “GP” model carburetor. Already have a TT carburetor, but don’t know how to adjust it? Doesn’t run “right”, and won’t respond to the changes you’ve made? This product is a collection of 9 original Amal factory documents, reproduced in .PDF format, which will help you. Click the cover for a larger picture on a separate page. Click the button below to purchase these files by PayPal for $9.95:
.
    This is not an actual, physical booklet, but 7 .PDF files which you can read from any computer or lap-top using “Acrobat Reader”.

Amal TT Carburetor Tuning
    The PDF format offers advantages over a printed product: the printed text and illustrations may be zoomed much larger permitting close inspection of fine detail. You can read it anywhere (doctor’s office, train station) on your smart phone or tablet.
    The file will be e-mailed to you within 24 hours of receipt of payment. There is no “hard copy”. There is no “print-out”. There is no tracking number. You must set your e-mail spam filters and preferences to accept mail from jdiamond@optonline.net. If you do not receive the file immediately, the problem is your e-mail. If you don’t understand what this is, don’t purchase it, there are no refunds.

“Amal Standard”

Carburetor Tuning; want more performance from your B.S.A., Triumph, Norton or Royal Enfield with a pre-Monobloc “Standard” (4/74/274, 5/75/275, 6/76/276, 29/89/289 &c.) carburetor? Already have a Standard carburetor, but don’t know how to adjust it? Doesn’t run “right”, and won’t respond to the changes you’ve made? This product is a collection of the original Amal factory documents, reproduced in .PDF format, which will help you. Click the cover for a larger picture on a separate page. Click the button below to purchase this combined file by PayPal for $9.95:
.
    This is not an actual, physical booklet, but 7 .PDF files which you can read from any computer or lap-top using “Acrobat Reader”.

Amal Standard Carburetor Tuning
    The PDF format offers advantages over a printed product: the printed text and illustrations may be zoomed much larger permitting close inspection of fine detail. You can read it anywhere (doctor’s office, train station) on your smart phone or tablet.
    The file will be e-mailed to you within 24 hours of receipt of payment. There is no “hard copy”. There is no “print-out”. There is no tracking number. You must set your e-mail spam filters and preferences to accept mail from jdiamond@optonline.net. If you do not receive the file immediately, the problem is your e-mail. If you don’t understand what this is, don’t purchase it, there are no refunds.

Automotive products

“Chrysler Poly Performance”

is my comprehensive illustrated booklet on obtaining the best performance from your 1955-66 Dodge, 1955-58 Chrysler, 1955-66 Plymouth, or 1955-58 DeSoto wide-block “poly” motor. Your “obsolete” poly is capable of surprising speed & power, without loss of reliability. It’s the most complete do-it-yourself literature you can buy to get the most from your poly motor. Before modifying (or even rebuilding) your motor, get the best help available, and do it right the first time. Click the cover picture for complete details.

Chrysler Poly V8 Performance

“Chevrolet Stovebolt Six-Cylinder Performance”

; want more performance from your 1937-63 stovebolt? Rather than merely summarize and repeat what you’ve already read in “California Bill” Fisher, Roger Huntington, Frank McGurk, etc. this booklet will focus on more advanced and complex information beyond what’s currently on the market, but it’s still in progress, expected completion later in 2022. Please note: this will not cover the 1939-63 G.M.C. or 1963-* Chevrolet 194, 230, 250 or 292 later model engines. Click the cover picture for complete details.

Chevrolet Stovebolt Six Cylinder Performance

I’m trying to locate some people I used to know; please click the button below for a complete list of contents. Thanks!

45 & UL
Parts

Big Twin
Parts

K & Sportster
Parts

VL
Parts

Victory Tech
Papers

U.S. Booklet
Order Forms

Foreign Booklet
Order Forms