Virgin DG1900 Stripdown With Photos. Oooer!

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maxstu
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

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ajsimmo wrote:It's not ideal to use old lifters, but they'll do a lot better on a new cam than on a wrong used one. If you're swapping gears then I'd say use your existing cam. I suggested the new one as an alternative to a swapped gear frankencam. Have the old lifters been kept in order?

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Lifters look good and flat. And kept in order. :ok
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

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itchyfeet wrote:looking at the case that's appart ( not sure why you buy an engine stand and work on the floor

Its on a old garden table under blue blanket
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

Post by itchyfeet »

ajsimmo wrote:frankencam.
:rofl

Why didn't you fit that Chinese cam yourself Andrew?
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

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maxstu wrote:
Its on a old garden table under blue blanket

:ok nothing wrong with a garden table, can't you send the stand back and buy some tools?
1988 DG WBX LPG Tin Top
1989 DJ digijet WBX Holdsworth Villa 3 Pop Top
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

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itchyfeet wrote:
need to get a better picture of the rod bolt nuts, I think non stretch bolts have what looks like a washer as part of the nut I assume to reduce friction
Andrew can you confirm?
this would tell you if you can release them to check without the cost of new bolts.

Stretch have long threads Right hand side of pic

ImageP1050729 by Paul_Barr, on Flickr

Pistons 2&3.

Image
MaxStu
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1987 DG1.9 LPG Auto Autosleeper
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maxstu
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

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One and four are different: Here is number one

Image
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

Post by maxstu »

So lm after a replacement camshaft or gear ring.
Gear ring is -5
On shaft read 070. Then further along 7. Opposite side to 7 is a five
What do the four mumbers in left corner denote?
Image

Image
Last edited by maxstu on 17 Feb 2019, 19:30, edited 2 times in total.
MaxStu
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1987 DG1.9 LPG Auto Autosleeper
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maxstu
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

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itchyfeet wrote:
maxstu wrote:
Its on a old garden table under blue blanket

:ok nothing wrong with a garden table, can't you send the stand back and buy some tools?

True. But lm one year from 60. The stand is an affordable luxury and well worth it. Rotating engine through 360 makes spannering a pleasure. By coincidence the table is perfect height and width to accommodate engine when attached to stand. Just 5mm above table.
Table will end up as firewood shortly if my unemployed status continues into next winter :oops:
MaxStu
1989 DJ 2.1 Auto Leisuredrive rusty bucket.
1987 DG1.9 LPG Auto Autosleeper
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maxstu
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

Post by maxstu »

maxstu wrote:This came out of the sump. Nothing missing from crank l think? Pistons (Standard) and rings all good. Nothing missing from heads or valve train. Going back to carb. Will dig it out tomorrow. Hang in there while l add more.
Image

Anyone recognise these mangled remains? Found in sump...
MaxStu
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itchyfeet
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

Post by itchyfeet »

maxstu wrote:
maxstu wrote:This came out of the sump. Nothing missing from crank l think? Pistons (Standard) and rings all good. Nothing missing from heads or valve train. Going back to carb. Will dig it out tomorrow. Hang in there while l add more.
Image

Anyone recognise these mangled remains? Found in sump...

looks like bits of an oil scraper ring to me
1988 DG WBX LPG Tin Top
1989 DJ digijet WBX Holdsworth Villa 3 Pop Top
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maxstu
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

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Now its been given a quick clean out. Cam and crank, despite two knackered teeth on gear ring to cam, run very smoothly

Image
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maxstu
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

Post by maxstu »

itchyfeet wrote:
maxstu wrote:
maxstu wrote:This came out of the sump. Nothing missing from crank l think? Pistons (Standard) and rings all good. Nothing missing from heads or valve train. Going back to carb. Will dig it out tomorrow. Hang in there while l add more.
Image

Anyone recognise these mangled remains? Found in sump...

looks like bits of an oil scraper ring to me
Checked all rings on all pistons. Will recheck in casecl missed something.
Furthermore all the liners are not damaged. Neither sides or skirts of pistons. Perhaps on a previous top end rebuild a ring may have snapped when removing liners?
Wish l had old carb here. Its a real mess.
Last edited by maxstu on 17 Feb 2019, 20:17, edited 1 time in total.
MaxStu
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itchyfeet
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

Post by itchyfeet »

maxstu wrote:So lm after a replacement camshaft or gear ring.
Gear ring is -5
So Andrews -6 gear cam might be just the ticket but you need a different crank gear and they go hand in hand so no guarantee with a different crank gear you need a -5
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

Post by itchyfeet »

ideally take con rods off the other crank too but make sure everything is marked as to where it came from, you have a real mix of con rods there probably repaired before with odd bits. the other crank may have all non stretch bolts. You can't reuse stretch bolts with long threads.

those bits could be left over from a previous repair
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maxstu
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Re: Virgin DG1900 Stripdown With Photos. Oooer!

Post by maxstu »

itchyfeet wrote:
maxstu wrote:So lm after a replacement camshaft or gear ring.
Gear ring is -5
So Andrews -6 gear cam might be just the ticket but you need a different crank gear and they go hand in hand so no guarantee with a different crank gear you need a -5

Sorry for the numpty question, Paul. Please explain this? Gear ring is -5. Why suggest -6? Perhaps to do with wear or 'lash'.....whatever that means.
If l replace camshaft gear ring like for like, will it mesh with crank ring without issue?
Thanks
Stuart
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1987 DG1.9 LPG Auto Autosleeper
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