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TexasTom
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« Reply #300 on: October 11, 2009, 03:31:58 am » |
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What ratio you runnin Jeff, 1.7s? What are you lookin for for max lift, .750" ... crazy!  It very much surprised me to hear the stainless steel rockers by Crower have a lower moment of inertia than aluminum ... I have no way of proving that statement, but it would be interesting to know the truth. Will the block under the rocker bolt in or weld in? Looks like the Angleflos have plenty of meat for darn near any rockers. Looks like fun what you were playing with ... I spent my Saturday getting my 2276 longblock back together. Compression should be right this time. Yeah Tim, I know ... going backwards!  Looking forward to shoehorning the 4"/Angleflo monster in it's place!!! |
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Work, work, WORK!
Modesty accepted here ...
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ugly duckling
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« Reply #301 on: October 11, 2009, 04:17:13 am » |
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hey tom. there 1.62 should have 760. small lift compared to some. i wanted to thure bolt the hole thing but with the gussets on the bottem i may have to do some tigen. UD .
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Marty
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« Reply #302 on: October 11, 2009, 18:42:45 pm » |
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I think the weld-in option is the best. It should make the whole rocker box area much stronger and up to the abuse of any valve spring.  |
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ugly duckling
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« Reply #303 on: October 11, 2009, 23:17:17 pm » |
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how much warpige did you get if any. i would think it would try to pull the end valve cover rails in even when welded slowly. UD .
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Fiatdude
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« Reply #304 on: October 12, 2009, 05:57:05 am » |
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Preheat the head (a lot) no warpage
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« Last Edit: October 12, 2009, 23:20:40 pm by Fiatdude »
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Fiat -- GONE Ovalholio -- GONE Ghia -- -- It's going Get lost for an evening or two -- http://selvedgeyard.com/Remember, as you travel the highway of life, For every mile of road, there is 2 miles of ditch |
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ugly duckling
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« Reply #305 on: October 12, 2009, 23:11:11 pm » |
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..UD .
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« Last Edit: October 14, 2009, 04:29:04 am by ugly duckling »
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Marty
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« Reply #306 on: October 13, 2009, 03:53:05 am » |
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Did them bare, re-heat treated them, and the went over everything to make sure and get it all flat again.
They did not move too much to be honest.
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58vw
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« Reply #307 on: October 15, 2009, 00:49:10 am » |
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what springs you runin there marty?
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Fiatdude
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« Reply #308 on: October 15, 2009, 01:47:43 am » |
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I think these are at least 25 years old
Wonder if I can find a invoice from Fumio -- nah probably long gone
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« Last Edit: October 15, 2009, 01:49:40 am by Fiatdude »
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Fiat -- GONE Ovalholio -- GONE Ghia -- -- It's going Get lost for an evening or two -- http://selvedgeyard.com/Remember, as you travel the highway of life, For every mile of road, there is 2 miles of ditch |
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58vw
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« Reply #309 on: October 15, 2009, 02:00:06 am » |
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old school AF's there  hey jeff...what gives the the goober peanut butter and jelly.....thought it was a cheese samich |
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Marty
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« Reply #310 on: October 15, 2009, 04:56:11 am » |
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what springs you runin there marty?
PSI |
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58vw
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« Reply #311 on: October 18, 2009, 05:33:33 am » |
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thanks for sharin marty |
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ugly duckling
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« Reply #312 on: October 18, 2009, 05:42:50 am » |
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x2 marty.
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Marty
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« Reply #313 on: October 18, 2009, 20:54:28 pm » |
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Also, I am only running 1.4 rockers.
That is all I ever run with the cams I use.
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seb66
Newbie
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« Reply #314 on: November 21, 2009, 20:42:27 pm » |
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LOVING THIS THREAD!
My comp elims blew so had to welded them up then machined them back, but nothing like the AMAZING work thats going on in this thread!
thinking about doing the rocker shaft mount now lol
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Martin
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« Reply #315 on: November 22, 2009, 01:16:46 am » |
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I bolted my Crowers in  the mounts didnt fail, but the rockers did!  Changing onto a different rocker altogether now. with a little luck they should arrive on Monday. Martin |
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Martin 9 sec street car, its just simply not fast enough Swing axle to CV convertion is on the website now www.taylormachine.co.ukOFF/500 |
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Marty
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« Reply #316 on: November 22, 2009, 03:01:51 am » |
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 ? Something was not right there Martin. I have a few cars runnign those for years now with no issues at all. |
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ugly duckling
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« Reply #317 on: November 22, 2009, 05:54:26 am » |
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X2 what marty says theres somthing not right did you investigate thurily?. proper shimming maybe deffenetly was eating it self oil delivery maybe good luck to ya hope you figure it out . those look like the paridice billit heads yes? thats some pricey stuff ya got there my freind  . UD . |
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« Last Edit: November 22, 2009, 06:03:32 am by ugly duckling »
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Martin
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« Reply #318 on: November 22, 2009, 13:20:43 pm » |
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ive not torn the motor down yet to measure the spring pressure, but once you start to look at the rocker all the load is put on one bearing, i did a search on the bearing and got its load ratings, it would seam were way over there limits.
if you look at the rockers from above and draw a line from the roller tip to the push rod cup, you can see where all the load is applied.
As for oil, thats not a problem theres loads of oil directed at them.
I know ive got to make sure that the springs are in spec. Im sure they are with in 10lb of there original spec. Ive been running them 0.090" off bind so they dont jump around at 9,000 rpm.
I'm on my 5th cam design now (learning more with each spec) and the new one is going to need even stronger springs. so i want to nip this problem in the butt.
current springs are 698lb on the nose. going to have to step up to 800lb springs for the new cam.
Yes UD there paradise billets. fortunately the rocker boxes have plenty of material in them!
I'll post the next incarnation on the 'in the works' page Sir Don Pauters has made me some special rockers to try out.
regards
Martin (every day is a school day) Taylor
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Martin 9 sec street car, its just simply not fast enough Swing axle to CV convertion is on the website now www.taylormachine.co.ukOFF/500 |
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Marty
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« Reply #319 on: November 22, 2009, 16:59:21 pm » |
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Martin, I get the rockers from Geers and maybe he has different bearings installed that the standard issue? The only other person I have ever heard of with issues with these rockers had their valve springs installed wrong (something like .200 from coil bind). Example, this motor has 750# over the nose and has been running for three years straight and the valve train has been rock solid!   The exhaust seats need a touch up each season but thats it. |
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« Last Edit: November 22, 2009, 17:07:23 pm by Marty »
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Martin
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« Reply #320 on: November 22, 2009, 17:53:14 pm » |
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how many miles does it do on the road? and how aggressive is the cam?
Martin
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Martin 9 sec street car, its just simply not fast enough Swing axle to CV convertion is on the website now www.taylormachine.co.ukOFF/500 |
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Marty
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« Reply #321 on: November 22, 2009, 18:17:04 pm » |
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how many miles does it do on the road? and how aggressive is the cam?
Martin
LOL - it is NOT a road going car so that is a very good point! The cam is pretty agressive.  If you are getting some of Pauters latest rockers, you will be quite happy with them. I have them on a 900# spring motor right now |
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Martin
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« Reply #322 on: November 22, 2009, 22:54:06 pm » |
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Yeah there the 'development' rockers from Don, I dont trust the Crowers anymore, not for what im trying to archive.
Martin
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Martin 9 sec street car, its just simply not fast enough Swing axle to CV convertion is on the website now www.taylormachine.co.ukOFF/500 |
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Fiatdude
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« Reply #323 on: November 30, 2009, 07:15:02 am » |
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Nice cam there Marty -- I remember having to clearance the heads on some of my Drag bikes to get the cam turning inside of them too
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Fiat -- GONE Ovalholio -- GONE Ghia -- -- It's going Get lost for an evening or two -- http://selvedgeyard.com/Remember, as you travel the highway of life, For every mile of road, there is 2 miles of ditch |
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Unkl Ian
Newbie
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« Reply #324 on: December 16, 2009, 03:12:15 am » |
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Also, I am only running 1.4 rockers.
That is all I ever run with the cams I use.
From the look of the cam, that is plenty. |
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Marty
Jr. Member
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« Reply #325 on: December 18, 2009, 16:38:24 pm » |
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I just freshened up another of my Crower equipped motors - no issues at all. 750# at full lift.   |
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Marty
Jr. Member
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« Reply #326 on: December 18, 2009, 16:39:39 pm » |
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I am thinking there must be mutiple versions of the rockers.
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58vw
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« Reply #327 on: December 18, 2009, 17:05:37 pm » |
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nice..thanks for sharing |
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TexasTom
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« Reply #328 on: December 19, 2009, 03:17:05 am » |
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Wonder why the Crower Stainless rockers aren't used more? In some configurations, they have a lower moment of inertia than the aluminum versions ...
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Work, work, WORK!
Modesty accepted here ...
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ugly duckling
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« Reply #329 on: May 29, 2010, 05:18:19 am » |
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its been awhile. UD |
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