Hyd roller or solid roller?
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 947
Likes: 0
From: Middletown N.Y.
Hyd roller or solid roller?
I'm building a new 406 for my C4. I've built 2 previous motors with Hyd rollers and they've been pretty reliable and maintenance free so-far. Those engines though, were for friends of mine this one is for me and I'm curious on what you guys think or what your experiences are with hyd and solid rollers. I only want to rev till about 6K max, it's a single plane EFI set-up with 215cc heads probably around 280-290cfm, 11.0:1 CR , 4340 crank and rods. I want to dip into the low 11's and I'll probably shoot it with 150-200 shot (NOS). Basically, What would you choose hyd or solid roller? I've got one of each picked out that would work fine but I'm having a hard time deciding! :confused:
[Modified by JUAN J SANCHEZ, 9:35 PM 9/14/2003]
[Modified by JUAN J SANCHEZ, 9:35 PM 9/14/2003]
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Re: Hyd roller or solid roller? (JUAN J SANCHEZ)
I have the 215 CC Dart Pro heads with a Hyd Roller, I would say if you want low 11's,,, you should go Solid Roller.
My cam is a moderate cam at 225-233,,,, it has aweome mid range and really good low end and top end as best as I can tell, cause its not fully tuned yet.
But I have driven Ol'Rjs 406 with a 242/242 solid roller and it gets up and goes.
I cant tell you the difference in ET till I get to the track in a week or two.
If they have a Dyno at Funfest then I will try to Dyno it then.
My cam is a moderate cam at 225-233,,,, it has aweome mid range and really good low end and top end as best as I can tell, cause its not fully tuned yet.
But I have driven Ol'Rjs 406 with a 242/242 solid roller and it gets up and goes.
I cant tell you the difference in ET till I get to the track in a week or two.
If they have a Dyno at Funfest then I will try to Dyno it then.
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 947
Likes: 0
From: Middletown N.Y.
Re: Hyd roller or solid roller? (ld85)
I think I saw a video you posted ,white vette? If yes, cool car! Thanks for the reply! I have the Dart's pro 1 in the process of getting ported and was thinking 230-240 Hyd roller or 238-248 solid , I gotta see what the flow is. I wanna get about 118-120mph on a DR. Just looking to see how much maintenance is required,or better said how often, with a street roller. Thanks! :thumbs:
Melting Slicks
Joined: Aug 2000
Posts: 2,009
Likes: 1
From: Springfield MO
Re: Hyd roller or solid roller? (ld85)
I'm building something similar but plan on 7500 rpms. I'm deffinatley going solid roller. I'm using shaft mount rockers which will help increase the amount of mileage before rocker adjustment. I have 230 cc pro 1's.
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Re: Hyd roller or solid roller? (JUAN J SANCHEZ)
You can get there on a pretty lumpy hydrolic roller. We had one in a minirammed 383, the cam had 234/242 duration .544/.570 lift (approx, I forget exact numbers) on a 112LSA and it would run mid 11's, with a low 11 on days with good weather. However, a solid roller will defiantly get you there...and then some. Definatly go with shaft mounted rockers if you can however, they'll save you a lot of time doing valve adjustments!!
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 947
Likes: 0
From: Middletown N.Y.
Re: Hyd roller or solid roller? (AS84)
That would definetly be a solid roller application! I'm just having a hard time deciding because the most I wanna spin is 6500rpm and I could use a rev kit with a hyd roller and get away with it , but the more I think about it the more I'm leaning towards a solid roller. Thanks! :thumbs:
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 947
Likes: 0
From: Middletown N.Y.
Re: Hyd roller or solid roller? (JUAN J SANCHEZ)
I gotta price out a Jesel rocker shaft kit ! I'm not sure I want to, probably around $700. Any Idea how long valve springs would last in a street roller application .600" lift if at all?
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Melting Slicks
Joined: Sep 2001
Posts: 2,068
Likes: 1
From: Gig Harbor WA
Re: Hyd roller or solid roller? (AS84)
I think I just saw a Comp, shaft mount kit in the $500 range new.
Why do you want to only spin 6000 or 6500? the cam will dictate your redline.
The motor (depending on the buildup) won't mind 7500 rpm.
In my Solid flat tappet road race motor, with 4:11s,I run 5500- 7500rpms for 30 minutes at a time. Now that I'm at 7500 I want to spin 9000.
I adjust my valve lash very 3 or 4 race weekends and most of the time only 2 or 3 rockers need adjustment. (stud girdles work.)
Given the kind of racing you want to do, expect to really go through the car and at least check everything before each race.
When you start going fast, more stuff stresses or breaks, so you have to minimize the exposure with preperation.
Have fun
Why do you want to only spin 6000 or 6500? the cam will dictate your redline.
The motor (depending on the buildup) won't mind 7500 rpm.
In my Solid flat tappet road race motor, with 4:11s,I run 5500- 7500rpms for 30 minutes at a time. Now that I'm at 7500 I want to spin 9000.
I adjust my valve lash very 3 or 4 race weekends and most of the time only 2 or 3 rockers need adjustment. (stud girdles work.)
Given the kind of racing you want to do, expect to really go through the car and at least check everything before each race.
When you start going fast, more stuff stresses or breaks, so you have to minimize the exposure with preperation.
Have fun
Melting Slicks
Joined: Sep 2001
Posts: 2,068
Likes: 1
From: Gig Harbor WA
Re: Hyd roller or solid roller? (JUAN J SANCHEZ)
BTW, I'm using a .020 over 400 block, destroked to 377, based on my experience with the block and cam, (Crower flat tappet, solid, grind# 0350), I expect to build up my next motor as a 406 with the same cam and rev 7500.
(admittedly, I run Demon carbs and no Nothing about EFI, if that is a limiting factor)
(admittedly, I run Demon carbs and no Nothing about EFI, if that is a limiting factor)
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 947
Likes: 0
From: Middletown N.Y.
Re: Hyd roller or solid roller? (Evan Ginsberg)
I'll be mostly street driving and once in a while I'll go to the track. Car might see 50 miles a week give or take a few and I'll go to the track 2-4 times a year. I'll like to keep the rpms down around 6000-6500 because 1: I don't want to breakin parts every time I race and you know rpm breaks stuff 2: Low rpms mean lots of good street driving torque,an engine that see's 7500 peak power doesn't have much at 2500-3500RPM 3: I'm not too sure my 700R4 will hold up to 500HP@ 6000RPM no less 7500RPM and finally I will probably make enough power @ 6000-6500RPM to get low 11's. Thanks for the reply's. :thumbs:
Thread Starter
Burning Brakes
Joined: Dec 2002
Posts: 947
Likes: 0
From: Middletown N.Y.
Re: Hyd roller or solid roller? (JUAN J SANCHEZ)
BTW I was looking at my crower catalog and that #0350 solid grind looks like it's good for about 6500RPM's tops in a 350 I'm not sure you'll make any power @ 7500 with that cam in a 406. Just my .02. Good Luck!
