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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Fot\]\s+roller\s+rockers\s+and\s+head\s+flow\s*$/: 17 ]

Total 17 documents matching your query.

1. Re: [Fot] roller rockers and head flow (score: 1)
Author: "Terry and Cindy" <roadandtrack@bigpond.com>
Date: Wed, 2 Jan 2008 15:17:07 +1000
I have yet to trial any roller rockers but it is planned for the in-progress rebuild of our race GT6 engine. I can however offer some real-world comments on head flow and related matters that might c
/html/fot/2008-01/msg00012.html (9,988 bytes)

2. Re: [Fot] roller rockers and head flow (score: 1)
Author: "Bill Babcock" <BillB@bnj.com>
Date: Wed, 2 Jan 2008 07:48:18 -0800
wow, great data. I don't have a dyno yet, and my flow bench is still just a set of plans. But when I do, we'll certainly talk. I have yet to trial any roller rockers but it is planned for the in-prog
/html/fot/2008-01/msg00019.html (7,288 bytes)

3. Re: [Fot] roller rockers and head flow (score: 1)
Author: William G Rosenbach <wgrosenbach@juno.com>
Date: Wed, 2 Jan 2008 09:09:04 -0700
Interesting stuff. But one question. You state: Because these engines are so restricted by the valve & seat, then the only way to improve them is by having very fast lifting cams and therebye having
/html/fot/2008-01/msg00022.html (7,530 bytes)

4. Re: [Fot] roller rockers and head flow (score: 1)
Author: "Jack W. Drews" <vinttr4@geneseo.net>
Date: Wed, 02 Jan 2008 10:59:56 -0600
Terry, thanks for sharing this with us. I found the same thing with my flow bench work on both Spitfires and TR6's. Thanks for telling us about the straight port experiment - you saved me all the wor
/html/fot/2008-01/msg00028.html (8,732 bytes)

5. Re: [Fot] roller rockers and head flow (score: 1)
Author: Richard Good <goodparts@verizon.net>
Date: Wed, 02 Jan 2008 16:44:27 -0500
Rocker ratio has everything to do with valve velocity. Lifter velocity times rocker ratio equals valve velocity. Boring the block and installing .874" Ford lifters instead of .800" stock lifters allo
/html/fot/2008-01/msg00037.html (8,283 bytes)

6. Re: [Fot] roller rockers and head flow (score: 1)
Author: "Bill Babcock" <BillB@bnj.com>
Date: Wed, 2 Jan 2008 16:44:17 -0800
Years ago a sharp machinist in Long Beach, CA did what he called a spherical seat on the intake of my Matchless G80CS desert sled (single cylinder 500cc motorcycle) Gave it a noticeable power boost w
/html/fot/2008-01/msg00045.html (9,669 bytes)

7. Re: [Fot] roller rockers and head flow (score: 1)
Author: <roadandtrack@bigpond.com>
Date: Thu, 3 Jan 2008 14:13:10 +1100
I stand correcting......... for any given camshaft, the average valve velocity will change with a rocker ratio change. For example, if changing the rocker ratio increases valve lift to say 16mm inste
/html/fot/2008-01/msg00050.html (8,573 bytes)

8. Re: [Fot] roller rockers and head flow (score: 1)
Author: Ted Schumacher <tedtsimx@bright.net>
Date: Thu, 03 Jan 2008 15:33:17 -0500
Richard is correct. The caution is boring out the lifter bore.These are on a 4.5 degree slant so you can't run straight into the block and overbore the lifter bores. Ted -- Ted Schumacher tedtsimx@br
/html/fot/2008-01/msg00066.html (10,240 bytes)

9. Re: [Fot] roller rockers and head flow (score: 1)
Author: "U K MOTORSPORTS" <tr6racer21@earthlink.net>
Date: Thu, 3 Jan 2008 16:52:38 -0500
On our current race motor for the TR6 we bored the lifter holes for ford lifters...Ted is correct...the lifter bores are not perpendicular to the block face....What we did is used a CNC machine and w
/html/fot/2008-01/msg00068.html (12,289 bytes)

10. Re: [Fot] roller rockers and head flow (score: 1)
Author: Robert Lang <lang@isis.mit.edu>
Date: Thu, 3 Jan 2008 16:57:25 -0500 (EST)
Okay - I'll bite on this one. What's the source for the .875 lifters? rml -- Bob Lang Room N42-140Q | This space for rent Consultant MIT IS&T unix-linux-help | Voice:617-253-7438 FAX: 617-258-9535 |
/html/fot/2008-01/msg00070.html (8,061 bytes)

11. Re: [Fot] roller rockers and head flow (score: 1)
Author: Larry Young <cartravel@pobox.com>
Date: Thu, 03 Jan 2008 16:54:49 -0600
A couple years ago I had a stock cam and 5 high performance TR4 cams run on a Cam Doctor. This is a very accurate machine to measure the cam lift curve. Of course, you can measure the curve with a de
/html/fot/2008-01/msg00072.html (10,016 bytes)

12. Re: [Fot] roller rockers and head flow (score: 1)
Author: <roadandtrack@bigpond.com>
Date: Fri, 4 Jan 2008 10:48:54 +1100
thanks for the info about the lifter bores. Can you or Ted confirm if the non-verticality is a factory machining error or deliberate. I have never done this on TR blocks, so I've never had cause to
/html/fot/2008-01/msg00073.html (8,770 bytes)

13. Re: [Fot] roller rockers and head flow (score: 1)
Author: Tony Drews <tony@tonydrews.com>
Date: Thu, 03 Jan 2008 20:23:08 -0600
Is that true for the TR-4 as well as the GT-6? - Tony _______________________________________________ http://www.team.net/donate.html Fot mailing list Fot@autox.team.net http://autox.team.net/mailman
/html/fot/2008-01/msg00075.html (8,492 bytes)

14. Re: [Fot] roller rockers and head flow (score: 1)
Author: "U K MOTORSPORTS" <tr6racer21@earthlink.net>
Date: Thu, 3 Jan 2008 21:32:51 -0500
If you look at the TR6 block from the front with a stock lifter installed in #1 with out the cam installed you will see that the cam bore is inboard somewhat and the lifter tilts in toward it. I will
/html/fot/2008-01/msg00076.html (9,699 bytes)

15. Re: [Fot] roller rockers and head flow (score: 1)
Author: Allen Washatko <awashatko@wi.rr.com>
Date: Thu, 3 Jan 2008 21:11:28 -0600
This would be greatly appreciated. I'm about to add this modification to my TR6. The new Ford 40 uses a .875 tappet that would work well. Allen Allen & Jody Washatko 1971 TR6 - Number 6 ____________
/html/fot/2008-01/msg00077.html (10,464 bytes)

16. Re: [Fot] roller rockers and head flow (score: 1)
Author: Tony Drews <tony@tonydrews.com>
Date: Thu, 03 Jan 2008 21:23:36 -0600
Here's some solid lifters at Comp cams: http://www.compcams.com/catalog/257.html (pictures show hydaulic lifters, though) - Tony _______________________________________________ http://www.team.net/do
/html/fot/2008-01/msg00078.html (8,233 bytes)

17. Re: [Fot] roller rockers and head flow (score: 1)
Author: MARK J WEATHERS <markjwea@msn.com>
Date: Fri, 4 Jan 2008 13:19:11 +0100
I seem to remember having to move the centerline of the bore next to the distributor gear over by .010 for clearance when I put .875 lifters in my TR6, might want to check this. Mark Weathers> From:
/html/fot/2008-01/msg00081.html (10,106 bytes)

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