|
View unanswered posts | View active topics
Author |
Message |
618F1
|
Post subject: Re: cam help Posted: Fri Jul 22, 2016 10:31 am |
|
Joined: Thu Oct 14, 2010 11:23 am Posts: 1826
|
Morning Cranky. Even with my glasses on i cannot read the markings on these! Late night was it? MikeV
Thank you Cranky. I can see clearly now......
MikeV
Last edited by 618F1 on Sat Jul 23, 2016 9:15 pm, edited 1 time in total.
|
|
Top |
|
|
618F1
|
Post subject: Re: cam help Posted: Fri Jul 22, 2016 12:46 pm |
|
Joined: Thu Oct 14, 2010 11:23 am Posts: 1826
|
Some cams for the Pantah/F1 engine. NCR7; found with, and without holes: Attachment:
cams NCR 7.jpg [ 16.17 KiB | Viewed 1447 times ]
Attachment:
cam NCR7 a.jpg [ 18.4 KiB | Viewed 1447 times ]
GCM; usually with holes: Attachment:
cams F1 GCM 1.jpg [ 25.54 KiB | Viewed 1447 times ]
Attachment:
cams F1 GCM c.jpg [ 58.97 KiB | Viewed 1447 times ]
Montjuich, and listed as original Pantah race cam according to Falloon, usually without holes: Attachment:
cams Mont b.jpg [ 20.01 KiB | Viewed 1447 times ]
Finally, ORSP also sells "F1" race cams. Perhaps I will add a photo later; now installed in a working set of heads. They quoted timing like the Montjuich, I think. Their timing and lift suggests something like all those above. MikeV
|
|
Top |
|
|
618F1
|
Post subject: Re: cam help Posted: Fri Jul 22, 2016 12:55 pm |
|
Joined: Thu Oct 14, 2010 11:23 am Posts: 1826
|
Some reverse-V head cams: GCM for 750/900: Attachment:
cams GCM 750SS 1.JPG [ 488.51 KiB | Viewed 1444 times ]
Attachment:
cams GCM 750SS 2.JPG [ 518.75 KiB | Viewed 1444 times ]
ST2 cams: Attachment:
cams ST2 b.jpg [ 18.83 KiB | Viewed 1444 times ]
And, now on US ebay, a set listed for the 750/900 (note the numbers on the H cam---same as the Pantah race/Montjuich part: Attachment:
cam h 900 montjuich.jpg [ 159.33 KiB | Viewed 1444 times ]
Attachment:
cam v 900 montjuich.jpg [ 152.14 KiB | Viewed 1444 times ]
Some 900SS (OHT & VHT, big and small letters) cams installed in Pantah heads: Attachment:
IMG_0762.JPG [ 3.4 MiB | Viewed 1441 times ]
MikeV
|
|
Top |
|
|
618F1
|
Post subject: Re: 900SS cams in Pantah heads Posted: Fri Jul 22, 2016 1:35 pm |
|
Joined: Thu Oct 14, 2010 11:23 am Posts: 1826
|
900SS cams installed in Pantah heads with 41/35mm valves (Carlo Leoncini work). The valves are still the stock 4.5mm apart, and at closest lift they are about .055" apart---just fine. Yes, I know the valves are "shrouded" now. Stock valves are "bolt-ins" --- love those last two words; ask Paul Ritter, famed bevel racer, and see what he says about them. But, if you use the race cams (NCR, GCM, Mont/Pantah P cams, ORSP, etc.) then they must be about 6.0mm apart or the valves will crash together at overlap. That is when the chamber really needs to be made much bigger to get anywhere near .050" or .060" without the dreaded shrouding. No where near bolt-ins except for F1B heads with stock 41/35 valves (with NCR 7s, for example). MikeV Attachment:
IMG_0759.JPG [ 4.3 MiB | Viewed 1441 times ]
Attachment:
IMG_0760.JPG [ 3.66 MiB | Viewed 1441 times ]
Last edited by 618F1 on Sat Oct 29, 2016 11:45 am, edited 1 time in total.
|
|
Top |
|
|
CrankyRoller
|
Post subject: Re: cam help Posted: Sat Jul 23, 2016 8:59 am |
|
Joined: Tue Oct 05, 2010 9:21 am Posts: 276 Images: 0
|
618F1 wrote: Morning Cranky. Even with my glasses on i cannot read the markings on these! Late night was it? MikeV Hay Mikey Clear? It is on this end. Must be you and that "West Coast" haze.
Attachments: |
DSCN0636[1].JPG [ 1.74 MiB | Viewed 1422 times ]
|
|
|
Top |
|
|
CrankyRoller
|
Post subject: Re: cam help Posted: Sat Jul 23, 2016 9:03 am |
|
Joined: Tue Oct 05, 2010 9:21 am Posts: 276 Images: 0
|
Another one for referance
Attachments: |
DSCN0637[1].JPG [ 1.69 MiB | Viewed 1422 times ]
|
|
|
Top |
|
|
Dick le Dog
|
Post subject: Re: cam help Posted: Thu Oct 27, 2016 6:16 am |
|
Joined: Wed Nov 03, 2010 1:29 pm Posts: 337 Images: 0
|
Attachment:
2011 02 mars Rutter Harris Ducati F1 008.jpg [ 1023.35 KiB | Viewed 1287 times ]
Primo, thanks for the replies .........have only just seen them .......must have been distracted with the Assen weekend . Secundo , I've got 'P' cams in my F1 engine ( natch) and looking at Brad's chart can see that they have wicked overlap !
|
|
Top |
|
|
Who is online |
Users browsing this forum: No registered users and 5 guests |
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum
|
|
|