Winston's Memoirs

Discussion in 'New Zealand' started by trustme, Dec 12, 2012.

  1. innathyzit

    innathyzit AKA Woodman

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    :deal:deal:deal

    Cut out some emery paper the same diameter of your valves and superglue it to the top of the valve head.

    Install barrell and pistons and bring the pistons up to TDC.

    Slip valves into guides with the sandpaer on them, but do not fit springs.

    Install head and slightly tighten down.

    Get electric or air drill and put the protruding valve stem in the chuck and and slowly bear down on top of the piston with drill on a slowish speed to cut valve reliefs on pistons.

    Be careful it works surprisingly well and you don't wanna take too much out of the piston.
    #21
  2. Mark_S

    Mark_S Fair Weather Faggot

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    wouldnt just be caused by slightly soft valve springs would it?
    #22
  3. trustme

    trustme Long timer

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    Hi Motu Hi Inathzzz
    Thanks a lot for your input & I'm sure I will need more advice but the plot thickens so maybe we will wait a bit before deciding what to do.



    BUDGET WOT BUDGET or how a simple low cost mod turns into a minefield

    I figured that I would buy a set of hi comp pistons to suit the existing bore, There was bugger all wear , hone marks still there , easy peasy.

    The bore size did not make sense , it sat somewhere between 20 & 40'. Tim at british spares had nothing to suit so he suggested I try MAP Cycles
    [ www.mapcycle.com ] in the US. Marino , my new second best friend could make no sense of it either. Upshot of all this

    1/ Rebore to 40 thou , max oversize, risk of distorted barrels, have to make a torque plate before reboring to stop distortion, barrels not strong very
    2/ Resleeve the barrels to std , spendy but problem solved.
    3/ Buy new barrels, over $ 1000 when you include new pistons
    4/ Do a long rod conversion
    New alloy nikasil barrel
    forged pistons 10.5 / 1
    billet rods longer than standard for more punch out of corners
    longer push rods
    new push rod tubes
    alloy tappet nuts
    alloy clutch plate\

    You know what I did :nod. I was in too far so I figured I might as well do it once & do it right. I did baulk at the billet crank
    The bits are ordered , hopefully the rods ,pistons arrive first so I can get it dynamically balanced to 76% then put the bottom end back together prior to the barrels arriving in 4 weeks. HD on the 7th Feb will be a close run thing

    Mean time back at the ranch

    The welder & I spent quite some time pressurising the frame & splashing soapy water around looking for bubbles before we were satisfied we had all the leaks. The factory welding was not brilliant

    Before

    [​IMG]

    [​IMG]

    After

    [​IMG]

    [​IMG]

    I'll do a better a better paint job later ! Yeah right

    Twin discs fitted

    [​IMG]

    I will clean up the over spray, no really , I will
    #23
  4. trustme

    trustme Long timer

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    Flash brand new Kibblewhite valve springs so I think that is unlikely. we'll check
    All the valves , springs , guides & seats are new & pretty good stuff.
    #24
  5. Padmei

    Padmei enamoured

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    Interesting stuff trusty. Wish I could offer up some advice but i'm still sulking since the war:D
    #25
  6. trustme

    trustme Long timer

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    Hurry up & wait

    Bugger all progress, the wheels are back on , the new RH fork leg is fitted but I am still waiting for the new caliper supposed to be here any day

    The motor is a whole different can of worms. Mr MAP sent an email just after xmas, the pistons he had for me were sold by one of his staff so new pistons are 3/4 weeks away, barrel is at the nikasil man . There was an alternative but it would require a bit of machining & the motor would be good for little but racing, with all the shagging around it was probably not going to be much quicker than waiting for the replacement pistons
    I've asked them to send everything they can so I can make a start, hopefully stuff will arrive in the next week or so.

    Can't see me getting to the festival of speed, can't see the point in putting it back together to pull it down again, it was going to be tight but doable , not very likely now.

    Very frustrating
    #26
  7. trustme

    trustme Long timer

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    The day before racing & finally the first instalment of bling arrives, not much really but at least I can do a bit now.

    Breather kit

    [​IMG]

    I can now drill the front of the crank case & tap for the fitting . I could use the timing plug at the rear of the crankcase & save drilling but the crank rotation kicks oil up the breather pipe, not ideal

    Spoofy Alloy Pressure Plate

    [​IMG]

    I can now shorten the clutch push rod & reharden

    Bearings

    [​IMG]

    Cam , mains & big ends, athough only 1 x main, I'll source the other locally.

    Stuff

    [​IMG]

    Including alloy tappet lock nuts, lighter , more revs doncha know.

    Pushrods

    [​IMG]

    I had just put in a set of 750 rods but they are too short for the new barrel, rats !!

    Catch bottle

    [​IMG]

    I scoured the camping stores for the right one , in the end my better half found some thing close in a book shop. I have no idea why I did not think of that, Rubbed the blue coating off , drilled holes & coated with POR15 clear coat. You do dumb stuff like that when waiting for parts.

    Still no caliper that would be here by Xmas, Barrels are being coated, pistons are being machined , rods, had too upgrade, Some numpty in the US had a problem with the original rods I ordered, they are sure it is operator error but were reluctant to send them until it was all checked out, so they talked me into a new flasher more up spec version,. More money of course but I am getting a good deal on them

    It aint much but it is progress
    #27
  8. motu

    motu Loose Pre Unit

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    Wow,nice stuff - I could've bought a nice car with what you spent there. I converted the R65 to open breather today. What do you want the reed valve for ? Triumph got rid of the timed breather in the early '70's and used the chaincase as a breathing chamber. Oh yeah, duh - belt drive primary. The BMW has a reed valve, I'm just using a road tube...I don't like my engines to consume their own waste products.
    #28
  9. trustme

    trustme Long timer

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    You are right , costs have got out of hand. I could bugger about & be frustrated with progress or I can spend some pingers up front & build a nice strong reliable motor , still not super powerful but with an ounce of luck it will hold together.
    #29
  10. Voltaire

    Voltaire Titanium and Ceramic Hipster

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    The two Englander bikes I did battle with at the back of the grid were 650 Triumphs.....you can see one that Bender put up with smoke coming from it.....is it normal mit der English bikes to take the gearbox apart at a race meet?

    Looks like yours will be a strong one when its back together.:evil

    The Kapiti lads had a good day but they went down on a oil slick ( not mine as I confessed as was in the clear)...
    They got it going with begged bits.
    #30
  11. trustme

    trustme Long timer

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    The Kapiti iKids are hard shot :lol3. Brent was telling me another rider was already down on the same corner , his gearbox had lunched & left it's contents on the track . I suspect they are not real good mates.:eek1
    #31
  12. trustme

    trustme Long timer

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    All this waiting has given me time to rehash the starter.

    Mark 1 was a little less than successful

    [​IMG]

    I used a set of boat trailer rollers but only 1 was driven. The motor would hit compression & stop while the driven roller kept spinning & sending a shower of roller rubber out the back. Back to the drawing board

    Mark 2 sort of grew organically , this means I made it up as I went along

    [​IMG]

    [​IMG]

    Spacing of rollers increased, both driven , steel rollers coated with por15 & sand then some black deck liner pooh over the top. Guards were a kind of adhoc after thought

    [​IMG]

    Yeah Baby.

    Now for some paint
    #32
  13. Voltaire

    Voltaire Titanium and Ceramic Hipster

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    Its a Hinckley Triumph...does it not have electric start :rofl
    seriously though good stuff. I like 'organic' :clap
    #33
  14. trustme

    trustme Long timer

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    ' An Exercise in Futility '

    I've been waiting & waiting for over 3 months now for bits that were to take 4 to 6 weeks . Last week I was told the pistons & rods were ready so I asked for them to be shipped so I could get the crank dynamically balance & rebuild the bottom end while waiting for the barrels.
    By Tuesday there was no shipping notice so more phone calls & an email came last night. :huh
    The barrels had arrived back from the plating co & are a complete stuff up , either sleeve them or start again which is another 3/4 weeks. :becca:becca: I suspect they have somehow ended up being over sized in the bore but could not be bothered asking. I've told them to keep the pistons & rods until the barrel is complete then send the lot.
    Meantime I shall put the motor back together in pretty much standard form except for the new cams & run it till the new gear arrives.
    Frustrating, very frustrating.:pissed

    Mean time the twin disc is all set up & I have been polishing the rockers, while I have been quietly going off mine.
    I'll stick up pics over the next couple of days as things start to go back together ready for Taupo on April 20.

    Shit happens , gotta keep going
    #34
  15. Padmei

    Padmei enamoured

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    Bummer TM:(:
    I know what it's like waiting eagerly for stuff. Here's hoping Winston runs well in April.
    #35
  16. Voltaire

    Voltaire Titanium and Ceramic Hipster

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    Must be due for a Winston update :cob
    #36
  17. trustme

    trustme Long timer

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    As you probably picked up from Volty's classic racer thread, Winston got put back together in standard form for Taupo. It was all extremely last minute & late nights as I was away a fair bit with work so had no time. Winston got started up 2 nights before the Taupo meeting, clouds of smoke every where. I figured , ' bugger it we'll go any way , maybe it will bed in ' , I knew this was a forlorn hope.
    Saturday & I started him up for the first practice & almost immediately shut him down, the smoke was so bad I could not see the point in carrying on with the possibility of causing real damage
    Graeme Cole who has forgotten more than I will ever know about building race motors was of the opinion that the new rings I had fitted were of dubious quality. The old oil ring was a 3 piece ring, the replacement a 1 piece & this was the problem.
    Strip down has revealed no broken rings, if I fit one of the rings into the barrel , the end gap is corrrect & when held up to the light ring seems to seal in the barrel, ultimately buggered if I know & it no longer matters.

    It has only taken 5 months but the new gear is ready for shipment, we are down to discussing whether the barrels should be secured with bolts or studs & nuts, should be shipped out this week, Well here's hoping.

    Once it arrives I'll get re enthused & start doing pics & a detailed rebuild
    #37
  18. motu

    motu Loose Pre Unit

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    Studs and nuts - you don't want to be winding bolts in and out of an alloy crankcase every week. Years ago talking to an old guy (???) who used to build race engines - he never used oil rings, the 2nd ring is called a scraper ring for a reason. I presume he won because no one could see to get passed. I like a 3 piece in worn engines, a 4 piece doesn't float in the groove....but they are hard on bores. For that reason I never used them in British bikes....who needs increased bore wear ? Never really had a problem with one piece oil rings, there was always another cause for oil burning. You could use an expander behind the ring, but like a 4 piece it's brutal and won't float in the groove.
    #38
  19. trustme

    trustme Long timer

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    Bits are leaving US today so I'm told.

    In the spirit of watching grass grow I have cleaned up the rocker gear

    Unpolished & fat 104 gms

    [​IMG]

    The lightest unpolished rocker was 92 gms

    It got a light going over with the dremel to remove sharp edges & a light polish

    [​IMG]

    Work in progress

    [​IMG]

    Rockers are now between 92 & 94 grammes

    Those nasty Thackery washes that create friction were replaced by hardened shims, took lots of dressing on the stone ,fitting , checking for side play & smooth rotation of rockers on spindles & then repeat & repeat & repeat.

    [​IMG]

    [​IMG]

    Back together

    [​IMG]

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    Surprising the variation in weight for standard parts ,10% . Quality control was never their strong point

    Probably around 10 or 12 hours labour in that lot. Sure felt like watching paint dry
    #39
  20. trustme

    trustme Long timer

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    Ain't no stopping me now

    [​IMG]

    [​IMG]
    #40