Cams-are-us!

A spot for any one considering making or selling reproduction parts-please put parts for sale in the vendors ad section

Moderators: notoptoy, S Allen, Solex68

Post Reply
JT68
Talented Enthusiast
Posts: 2920
Joined: Sun Jan 27, 2013 9:43 am
Location: Cumming, GA

Cams-are-us!

Post by JT68 »

Lots of great choices for you1

https://www.datsunrestorationproducts.com/shop-13

BEST, JT
LT/JT
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
User avatar
bakerjf
Site Supporter
Posts: 1383
Joined: Wed Sep 07, 2011 5:48 pm

Re: Cams-are-us!

Post by bakerjf »

Good deals!
J. Baker
Lafayette, CA
'69 2000 (Solex)
User avatar
2mAn
Roadsteraholic
Posts: 2208
Joined: Mon Jan 09, 2017 5:02 pm
Location: Inglewood, CA

Re: Cams-are-us!

Post by 2mAn »

Whoa!! Tell me about the RB Cam! Which would be better to take advantage of my oversized header ?
Simon
Current Cars:
-1999 Porsche 911 4/98-build, 3.8L M96
User avatar
spyder
Roadster Fanatic-Site Supporter
Posts: 2206
Joined: Tue Apr 12, 2005 1:43 am
Location: Live Oak, TX.
Model: 2000
Year: High Windshield-68-70

Re: Cams-are-us!

Post by spyder »

How is the duration measured? Total duration or measured at .050
JT68
Talented Enthusiast
Posts: 2920
Joined: Sun Jan 27, 2013 9:43 am
Location: Cumming, GA

Re: Cams-are-us!

Post by JT68 »

That's a really good question. First these are all street/autocross cams with the RB and the C being the most radical. None are full race cams.

As the link says, the A,B and C cams are exact copies of Nissan cams. The numbers displayed for the Nissan Cams are measured more like Nissan did which was somewhere in the .010-.025 ~.017" lift point.

So if using the "american standard" of duration at .050 the Nissan grinds would be 25 or 30 degrees less give or take.

The RB and the C pretty similar and are the lumpiest, with about 250-260 degrees at .050". Their total duration is over 330 and lobe lift is similar.

To answer Simon's question, yes the RB would be a fine choice with solexes and his setup. The larger primary tubes moves the optimal rpm range up by 1000 or so rpms so you would want the cam to be "on" (dialed in) for 7.5k-8k+ operation.
LT/JT
https://www.datsunrestorationproducts.com/
Only the very BEST parts for your Datsun- 10000's of items in stock
New, Used and Reproduction!
User avatar
jrusso07
Roadsteraholic
Posts: 1691
Joined: Sat Aug 02, 2008 9:02 am
Location: Penn Yan, NY
Model: 2000
Year: High Windshield-68-70

Re: Cams-are-us!

Post by jrusso07 »

...must stop salivating.
Joe

1969 SRL311 - Solex
1970 SPL311 - U20 mod
1970 SRL311
User avatar
Gregs672000
Roadster Fanatic-Site Supporter
Posts: 8923
Joined: Fri Aug 07, 2009 11:47 pm
Location: Tacoma, WA

Re: Cams-are-us!

Post by Gregs672000 »

Thanks for clarifying the duration specs as I was looking at my Isky noting a 248 duration at .50, which is exactly where I want it, and wondering why the B and C cams had such different durations vs this cam. The Isky has a lot of lift though, .536 (according to the website, it's .499, but per Delta and their cam doctor it was .536). We'll see if the rockers can handle that, the springs are tight but are not coil binding per feeler gauge...
Greg Burrows
'67 2000 #588
Tacoma, WA
Post Reply