Re: solid roller on the street?
[Re: Jeff_383]
#2715241
11/12/19 09:01 PM
11/12/19 09:01 PM
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Joined: Jan 2003
Posts: 11,728 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,728
Portage,michigan
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I ran a 700 lift roller cam on the street for years. 245/590 Isky tool room springs. Zero problems. Lots of 15 to 20 miles type jogs all the time in it. And lots of passes at the track every season. Go for it
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, low 10.30’s 1/4 1.41 best 60 foot 6.56 at 104.17
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Re: solid roller on the street?
[Re: Jeff_383]
#2715248
11/12/19 09:09 PM
11/12/19 09:09 PM
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Joined: Mar 2003
Posts: 9,100 Rogue River, OR
Jeremiah
master
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master
Joined: Mar 2003
Posts: 9,100
Rogue River, OR
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I would drive the hell out of it and check lash / change the oil every 500 miles. If the fuel/timing curve is correct and you have a coated gear the frequency of maintenance could be extended.
If you drive it hard check things over often. Much easier to catch a broken valve spring under the rocker cover than picking the pieces out of the oil pan lol.
Do you have a cam card? How far is the block bored?
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Re: solid roller on the street?
[Re: Jeff_383]
#2715258
11/12/19 09:24 PM
11/12/19 09:24 PM
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Joined: Jan 2003
Posts: 8,035 Tulsa OK
Bad340fish
master
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master
Joined: Jan 2003
Posts: 8,035
Tulsa OK
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I have done 6 drag weeks with solid roller lifters. Stay on top of your lash, make sure the springs match your combo, and keep your ears open it will tell you if it something isn't right.
I usually check them a few times on drag week, they get loud after hours on the highway, and in my head I always think one is really loose, and it never is lol. Hours on the highway @200* gets the oil and everything nice and hot so the lash gets wider than normal I am sure, it is usually all good the next morning when I check them.
68 Barracuda Formula S 340
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Re: solid roller on the street?
[Re: Jeff_383]
#2715268
11/12/19 09:44 PM
11/12/19 09:44 PM
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Joined: Jan 2003
Posts: 31,076 Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,076
Oregon
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15-20 miles ok. What about 75-100 miles. Just nervous If I were to buy it, I'll munch something rather quickly You can find all sorts of stories. I know plenty of guys who have tore up engines because a solid roller lifter came apart while they were driving down the freeway or around town. Then there are guys who drive them a lot without any trouble. As others have said, it is the details that matter. Good lubrication, proper clearances, picking the right lobe, matching the springs to the lobe, using high quality parts, etc.
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Re: solid roller on the street?
[Re: Jeff_383]
#2715272
11/12/19 09:52 PM
11/12/19 09:52 PM
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Joined: Oct 2007
Posts: 4,212 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,212
New York
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All good advice - keep after the lash, any 1 valve that changes quickly may be something getting ready to die. Loose lash is what kills tappet rollers. If you don't know what quality rockers you have, get good ones.
Boffin Emeritus
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Re: solid roller on the street?
[Re: polyspheric]
#2715307
11/12/19 11:44 PM
11/12/19 11:44 PM
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Joined: Nov 2003
Posts: 5,160 Texas
dannysbee
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master
Joined: Nov 2003
Posts: 5,160
Texas
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It’s been years since I ran a solid roller on the street. But when I did the standard week end was over 200 miles. I didn’t own a trailer and the town I street raced in was 40 miles away. A lot of the time we would go on Friday and Saturday night. That was 160 miles to get there and get home, not counting cruising or racing once we got there. I put 1000’s of miles on that engine. Broke one tie bar in all those miles. It had one thing that I think is a very good idea. The engine had a rev kit. Basically an extra set of springs that kept the slack out of the lifters. This was in the 70’s so I would think lifters are much better now than then.
Getting old just means you were smarter than some and luckier than others.
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Re: solid roller on the street?
[Re: Jeff_383]
#2715328
11/13/19 02:50 AM
11/13/19 02:50 AM
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Joined: Aug 2003
Posts: 43,303 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,303
Bend,OR USA
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Whose rockers come in the -1 kit from Indy? That's what is on them. It depends on when those heads where sold by Indy, if they are black or deep purple extruded aluminum , no needle bearings on the shafts, their probably Doves
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: solid roller on the street?
[Re: Cab_Burge]
#2715334
11/13/19 06:02 AM
11/13/19 06:02 AM
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Joined: Jan 2003
Posts: 10,019 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
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Posts: 10,019
Frostbitefalls MN (Rocky&Bullw...
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If it were mine i would find out exactly what every part of the valve train is. It is the whole combo that makes the difference . If the rockers are doves they have a reputation of limited strength. Probably OK for a flat tappet cam or mild solid roller that won't need a lot of spring. Once you know what is in the motor you can go to a knowledgeable engine builder and come up with a plan. IMHO pressure fed lifters are a very good idea. A cam with endurance type lobes or milder also. I keep a close eye on lash and am very carefull to check at as close to each 90 degree move, 90, 180 , 270. 0. Cams do flex under spring load and the bigger the springs the more important this becomes. If you see a valve get loose by more than .002 start looking for the problem. My last inspection #6 intake was .003 loose. I have Jesel paired rockers and the intake rocker felt fine till i tried to rotate it full circle on its' shaft. On further inspection the rocker shaft was galled and the roller bearing would have gone bad next, filling my motor with nasty crap. I once had the needles wind up in the oil pump , ruin all the bearings, scratch the cylinder walls, and broke the pump drive Shaft. So now i keep notes and if anything changes even a little like + .001 or close to .002 it gets rechecked again very soon. Any more movement and i know something is going away.
Last edited by gregsdart; 11/13/19 06:09 AM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: solid roller on the street?
[Re: BradH]
#2715369
11/13/19 11:18 AM
11/13/19 11:18 AM
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Joined: Dec 2007
Posts: 12,592 Great Neck,LI,new york
hemi-itis
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I Live Here
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Posts: 12,592
Great Neck,LI,new york
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I will add that having pressurized oil to the bottom of the lifter greatly improves longevity.Also keep spring pressures pressures well under 700# over the nose and a non aggressive lobe. I sent mine back to be rebuilt with 5 years and about 7500 miles and they only wanted to rebuild 3 lifters,I told them to please do ALL of them at $12 each!!!
HEMI-ITIS has no cure. My condition is fully BLOWN!!
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Re: solid roller on the street?
[Re: AndyF]
#2715384
11/13/19 11:51 AM
11/13/19 11:51 AM
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Joined: Oct 2007
Posts: 4,212 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,212
New York
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Useful rev kit springs are still available, but no specific attachment hardware (or even dimensions) to install. Typically, this levers against the underside of the head casting with seats for the springs following the tappet bore locations exactly. Somewhere there are SBC & BBC install pictures?
Boffin Emeritus
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Re: solid roller on the street?
[Re: polyspheric]
#2715412
11/13/19 12:53 PM
11/13/19 12:53 PM
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Joined: Dec 2005
Posts: 11,705 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,705
Fulton County, PA
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Aggressiveness of the lobe, quality of parts and RPM are going to determine maintenance schedule and longevity of parts.
Max effort? Fun cruising car? Cam can always be swapped to one that better suits your needs/goals.
.660/.640 is not that big and the springs seem fairly mild. Need to know lobe design.
Last edited by CMcAllister; 11/13/19 01:05 PM.
If the results don't match the theory, change the theory.
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Re: solid roller on the street?
[Re: Jeff_383]
#2715424
11/13/19 01:16 PM
11/13/19 01:16 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
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Posts: 19,318
State of confusion
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I've driven my .680-.660 276-281 @ .050 ISKY solid roller up to 1 1/2 hours for a local movie shoot in L.A. County when I live in S.B. county and many miles since then and a few hundred passes as well. Gentle lobes and frequent lash checks/setting go a long way. Started at 210/530 pressures and stepped up to 245/600 7 years ago.......
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: solid roller on the street?
[Re: Jeff_383]
#2715431
11/13/19 01:30 PM
11/13/19 01:30 PM
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Joined: Aug 2003
Posts: 43,303 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,303
Bend,OR USA
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Do you know what the duration is at .050 lobe lift and what lobe center the cam is ground on?
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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