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Thread: Upgrades and add-ons for r75/5

  1. #1
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    Upgrades and add-ons for r75/5

    Hi
    Having a full service done on my 73 lwb r75/5. This is my favorite bike, I have 7. Bob Clement from Montana found this bike for me from one of his costumers after reading my wanted ad in the news back in 04. Bob did a full service along with taking care of the sale and shipping. I have done tires, fluids, battery, and some seals over the last fifteen years. I could do more but shy away from working on the engine and electronics, to sensitive for me. Anyways Im having the front end and head bearings done so new fork boots "since-ya". Full engine tune up and pulling jugs to replace pushrod seals "Since-ya" in there. Pulling tranny and rear end to service splines and "since-ya " in there should I do things or make improvements that make sense "since-ya" have it apart. Most rubber bits will be replaced along with cables. Im keeping this one stock as far as electronics and do not want any performance mods, but do you guys suggest any improvements I should not ignore "Since-ya" in there working on it.
    Thanks
    Brian

  2. #2
    Liaison 20774's Avatar
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    Brian -

    Sounds like the bike is a keeper! How many miles on it? With the transmission out, makes me think about the various seals in that area...unless Bob did them. Namely the transmission input seal as well as the rear main seal and oil pump cover. Those last two means more work in terms of pulling the clutch and flywheel (be sure and block the crankshaft from moving forward!). But if you're not really seeing issues with leaks in these areas, maybe leave it alone. If many miles on the clutch, time to replace it??

    How's the bike's performance? Oil usage...gas mileage? Does the bike still have good compression? These issues tend to be high mileage or abused type of symptoms.
    Kurt -- Forum Liaison ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  3. #3
    Airmarshal-IL James.A's Avatar
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    I also own a 1973, LWB R75/5. It is my favorite airhead as well. I am the 3rd owner. My wife bought the bike in 1989 when I was at work on a saturday. I guess that would make her the actual owner.

    When the transmission is out, it would be advised to look for evidence of leakage in the area of the flywheel, and consider replacing the rear main seal and oil pump O-ring and maybe the transmission input seal as well.

    Please consider joining the Airheads Beemer Club. www.airheads.org
    There are a great many Airhead members in your area, and the MA Airmarshal, Tim Hille, is very active in the club.
    1973 R75/5

  4. #4
    Fortis Fortuna Adiuvat Omega Man's Avatar
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    Quote Originally Posted by James.A View Post

    Please consider joining the Airheads Beemer Club. www.airheads.org
    There are a great many Airhead members in your area, and the MA Airmarshal, Tim Hille, is very active in the club.
    Tim also announces Airhead Tech days on the Yankee Beemer forum- http://www.kenspring.com/ybforum/forum.php
    Gary
    "You can do good or you can do well. Sooner or later they make you choose." MI5
    Mod Squad
    2009 F800GS 1994 TW200

  5. #5
    Registered User
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    Quincy MA
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    Upgrades and add-ons

    Hi again
    To answer a few questions. I'm an airhead and know Tim and have been to his tech days and swap meets. All beneficial and educational. As mentioned I will do basic nut and bolt service but shy away from major service, tuning, and electronics. When parts are removed will consider rubber bits and seals as in fork and driveshaft boots and seals when tranny is out. Right now the bike is fine, its just been fifteen years since the last major service. I have a good feel for what is needed on a major service, I just was wondering if there was a modern upgrade I should consider at this time.
    One specific question I have is shocks. I bought a pair of reproduction shocks in 2007 from bobs ( for another /5 I have) that have the adjusting lever and aluminum cover. They do not have them now. What would you recommend for shocks that look stock.
    Thanks
    Brian

  6. #6
    Liaison 20774's Avatar
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    I'm not aware of another version of the stock /5 shocks with the "can" over the spring. Back in the day, Koni (now Ikon) was a reasonable replacement...don't know if the "can" can be transferred. Past discussions on shocks have been on the forum. Tom Cutter on the east coast and Ted Porter on the west coast can supply shocks that are specific to your configuration and riding style.
    Kurt -- Forum Liaison ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  7. #7
    "Since-ya" pulling the tranny, check for spooge from the rear main seal and check the clutch plate thickness. If the flywheel comes off "Since-ya" in there, change the oil pump o-ring.
    Lee A. Dickinson - Danielsville, GA USA
    Airheads #3480 | Iron Butt Assn. #8914
    1992 R100RS - 1993 K1100RS - 2013 R1200GS

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