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Project New acquisition - Honda Spada

Discussion in 'Your 250cc Projects' started by jmw76, Jan 27, 2020.

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  1. jmw76

    jmw76 Well-Known Member

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    Frame basically ready and waiting for engine now. DSCF5048.JPG DSCF5049.JPG DSCF5050.JPG DSCF5051.JPG DSCF5052.JPG
     
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    jmw76, Apr 19, 2020
    #61
  2. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Punch a hole in the gasket.
     
    Murdo, Apr 19, 2020
    #62
  3. jmw76

    jmw76 Well-Known Member

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    @Gen Have checked the oil pump and pressure relief valve.
     
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    jmw76, Apr 19, 2020
    #63
  4. jmw76

    jmw76 Well-Known Member

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    The head gaskets are missing material over the oil gallery. Can not simply just punch a hole.
     
    jmw76, Apr 19, 2020
    #64
  5. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Is there an O ring or seal supposed to go in there?
     
    Murdo, Apr 19, 2020
    #65
  6. Gizziracer

    Gizziracer Well-Known Member Contributing Member

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    • Agree Agree x 1
    Gizziracer, Apr 19, 2020
    #66
  7. jmw76

    jmw76 Well-Known Member

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    @Murdo No O ring. Just sealed by the metal shim head gasket. The gasket has a hole that acts as a pressure reducing orifice for the camshaft oil feed. The gasket that I purchased for a VT250 is a much thicker composite material and it does not cover the oil gallery feed.
     
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    jmw76, Apr 19, 2020
    #67
  8. jmw76

    jmw76 Well-Known Member

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    Wemoto do not appear to have a listing for the head gaskets.
     
    jmw76, Apr 19, 2020
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  9. Gizziracer

    Gizziracer Well-Known Member Contributing Member

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    I’d give wemoto a call in the morning.. but sometimes they do have to import parts.. I doubt Honda will have any in Australia but if they do I’d just bite the bullit and buy them. With almost no international flights moving any ones guess how long parts from os will take to arrive.. I’m into the 6th week waiting for an express post Guzzi part from the USA
     
    Gizziracer, Apr 19, 2020
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  10. jmw76

    jmw76 Well-Known Member

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    Here is an image showing the new gasket laid on the old. The problem are is the section that protrudes into the cam chain area. I am tempted to clean up the old shim gaskets and through them back in with Hylomar sealant. I have had good success with Hylomar in the past.
    VT250-gasket-diff.jpg
     
    jmw76, Apr 19, 2020
    #70
  11. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Check the price of some Genuine gaskets first... the differences in gaskets, though small, can be very important, especially with oil and water galleries. What appears to be a restriction may be required for effective cooling or oil flow/pressure.
     
    Linkin, Apr 19, 2020
    #71
  12. jmw76

    jmw76 Well-Known Member

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    Yes I am aware of that. I am not planning on using the new composite gaskets which are incorrect. The quick bit of research I did on the OEM gaskets is that they are about $50 ea, if you can actually get hold of them. Hence my thoughts on using the old shim style head gaskets with Hylomar sealant.
     
    jmw76, Apr 19, 2020
    #72
  13. Gen

    Gen Well-Known Member

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    Gen, Apr 20, 2020
    #73
  14. jmw76

    jmw76 Well-Known Member

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    Now lets put this into perspective. I was not intending to pay more for the head gaskets than I paid for the bike!!!
     
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    jmw76, Apr 20, 2020
    #74
  15. jmw76

    jmw76 Well-Known Member

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    It looks like my bearings and piston rings have finally hit customs in Sydney. Probably another week or so before I see them.
    Wow, what a long journey for an order placed in Early feb. So it looks like I might have a chance of getting the Spada on the road before the end of May.
     
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    jmw76, Apr 28, 2020
    #75
  16. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    This guy does Copper replicas of your original gaskets.

    http://coppergaskets.com.au/
     
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    Frankster, Apr 29, 2020
    #76
  17. Gen

    Gen Well-Known Member

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    Gen, Apr 29, 2020
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  18. jmw76

    jmw76 Well-Known Member

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    Found the correct head gaskets and ordered them a little while ago. Just waiting on delivery now.
    Thought I would start be assembling the bottom end over the weekend.
    Spent ages cleaning the cases, etc up and getting rid of all the old gasket material. A slow job.
    I honed the cylinders and they have come up well.
    I linished the crank and it also come up pretty good.
    Dropped the cheap AHL main bearing shells into the upper case half ready to fit the crank. Fit seems ok.
    Went to fit up the piston rings (again AHL) and it appears the oil ring set is designed for a slightly wider groove. Oh well, just run with the old oil rings (which were on the upper end of the end gap limit but usable).
    Went to fit the conrod bearings into the rods. Bugger, they are a bit of a loose fit. Looks like I have been sent the wrong shells.

    Does anyone know of some local stock of standard size conrod bearing shells for a Spada????


    Peter.

    SAM_4043.jpg SAM_4045.jpg
     
    jmw76, May 17, 2020
    #78
  19. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Why not use your original oil expander with the new rings?
     
    Murdo, May 17, 2020
    #79
  20. jmw76

    jmw76 Well-Known Member

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    Yes. I have had to use the original oil ring set (expander and 2 x side rails). a 3 parts are different on the Spada.
    It looks like I hve been sent parts for an earlier VT250F and not the Spada (VT250L).
    The crank pin on the 250F is 1mm smaller in diameter as is the big end on the conrods. No way to make the 250F big end bearings work.
     
    jmw76, May 17, 2020
    #80
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