Erson Roller Rocker Assembly Backordered

[RodKnock]

Erson has had them backordered for a month now. Has anyone else run into this issue? My engine is being delayed due to them being out of stock.

Just my luck. Just an FYI, for anyone else out there building an FE right now and doesn't have them.

[RICK LAKE]

Rod knock Have you tryed Barry R at Survialmotor sports? Call Around you may pay a little more but get them a 2-3 days Rick L. Ps KCR??

[RodKnock]

Barry is out. I would think if Keith is building a ton of FE's, then he might want to keep a few around for his crate engine customers, which I am not.

Erson is telling vendors next week, but then they've already pushed the date back once.

[blykins]

Did you try Dennis Carrico? www.dscmotorsport.com

[RodKnock]

I saw his company when I searched around, but I've never heard of them. Is DSC OK?

[CJ428CJ]

I heard Erson is moving from Carson City NV to somewhere in the midwest. I wonder if that might be what's causing the delay.

Regarding DSC, he's pretty "hit and miss." If you can actually get a hold of him, he's pretty good. Actually getting a hold of him is another story. His answering machine is often full and messages go unanswered. Forget about actually ordering anything off his website. I tried to order a dipstick tube that way. I got all done and realized his website had never asked me for a credit card or any other payment info. I called, got his voicemail, left two messages telling him I wanted to pay for a dipstick I had ordered on line. He never called back. I finally went elsewhere. Another time, I called and got a hold of him to order the spacer kit that you use to need for Erson rockers if you run Edelbrock heads (but I don't think you need it any more). He shipped them to me the same day.

Chris

[cobrajam]

He (dsc motorsport) has a lot of items on eBay including a set of Erson rocker assemblies for standard heads. If using the Edelbrocks, you have to disassemble and rearrange the spacers. http://cgi.ebay.com/ebaymotors/Ford-...QQcmdZViewItem He normally includes an auction for the ones to fit the Edelbrocks, but doesnt this time indicating he may be out(?) If interested, you might as well do the buy it now for $685, as the reserve will be something like $684. This is how I got mine a few months ago. He seems like a decent kind of guy (communicates well as far as email, I have tried phone before w/o much luck), maybe he would be willing to swap around if you have Edelbrocks. Shipping seemed to be around $25, and that was coast to coast, and was shipped quicker than most at half the distance. I have got to find someone to machine out clearance on my stands for the head studs, since they are only designed to clear head bolts.

[Barry_R]

I think pretty much everyone is out of Ersons right now - and I'm fairly certain that the move has something to do with it. No promise date that I'd care to publish....

[RodKnock]

Thank you for the help.

At some point, and I don't when that point will come, I will need to make a decision to spend a lot more money on the T&D's. Of course, that depends on their availability too.

I would rather have the T&D's, but the cost difference isn't marginal.

[RICK LAKE]

Rodknock you know that the T&D setup needs oiling through the pushrods. Also if you don't own the BT heads, your will need machine work for your heads to mount the plates. Custom pushrods also. Rick L.

[xlr8or]

Talk to Doug at Precision Oil Pumps. He has the stands, shaft and rockers I believe.

[RodKnock]

Rick, thanks. I'm using the Edelbrock heads. I didn't know specifically why, until you mentioned it, but I knew I would have to machine the heads, get new pushrods and pay additional monies for the T&D's. I think the added cost is somewhere in the neighborhood of $500-$1,000 extra, which isn't by itself all too horrible, but when you add it the rest of the engine...Ugh.

[RodKnock]

Scott, thank you. I just sent him an email.

[RICK LAKE]

Rodknock If you are not going crazy with a 8,000rpm motor and .800" cam You might want to look at the ERSON roller rocker setup. I put them on my stroker shelby motor and are very happy. They are lifting only a .600" cam. It's a hydro roller from crane. I am building a larger motor from 482 to 498 with a KCR custom hydro roller cam. I have oiling on the ersons both in the shafts with an .080" restrictor and pushrods oiling also for the cup and ball on the rocker. The head work for cutting down the mounts was $300.00 alone. The T&D's where 1K. Pushrods from Smith brothers was $300.00. You can save between 5-600 dollars on this alone. I am also running beehive spring in my motor but limit the rpms to 6,200. KCR has some great custom cams. His head work is good also. If you are looking for a little stronger balanced motor, Joe craine does a great CFM port job on the intakes. There is a 20-40 cfm differents between port flow on some intakes. He gets around $300.00 for the work. This is a good bang for the buck. You might want to look into this. Do you have some motor spec's?? and idea of TORQUE and HP you are looking at? You might not need to go this crazy Rick L.

[RodKnock]

Rick, I would only buy the T&D's if Erson can't deliver in a reasonable timeframe. My engine is being professionally built right now and the delivery of the rockers may impact the delivery of the engine. I can wait a little bit, but I've got a few horror stories over the years waiting for manufacturers to deliver on their promises. Anyway, my Crower hydraulic roller cam specs are: 112 LSA, 242/248 duration and .618/.638 lift in a Shelby-block based 482 with Edelbrocks. I can only speculate at this point, but I think that the HP and torque will be around 600 +/-. I know the T&D's are an expensive add, but I hope Erson will deliver, although even Barry R mentioned above that he couldn't publish a promise date.

[SantaFe66]

RodKnock,

Have you looked into Harland Sharp roller rockers? Nothing wrong with them that I can see. I am installing them on a 390 stroker build on Ebrock heads and will use either the HS end stands or the Precision Oil Pumps stands. Think they are available right now.

Paul

[RICK LAKE]

Rodknock Have you looked at Garrett rockers? They sell 2 types, One has the body that looks like Dove of Comp cams with a bushing body and roller tip. The other is a full roller that looks like FE Max or the $1,200.00 Shelby named ones. # 541-259-2514 You can do a search for them. They are under Garrett Machine & Welding, Or Garrett Machine Performance. They are under rocker arms on the second page of the goggle search. They have end plates and couple of different mounting setups. It depends on the heads. Did you try Flatlander Racing for the rockers? Somebody must have a set for sale? Rick L.

[cobrajam]

For what it is worth, I ran Ford Power Parts roller rockers in my iron 427. The POPs are very similar, and may very well be the one and the same. I preferred the FPP rockers over the Doves because the FPPs have a bronze bushing (like the POPs) instead of the aluminum riding on the shafts like the Doves. I also liked the ball/ball ends of the push rods that were used. I did use the Dove stands/shafts due to the fact the end stands actually tied into the head studs. This was about 15 years ago and choices were more limited back them. I was using a solid Comp Cam roller, .645/.645, 246/246@50, 108 LSA, and either Comp 829 or 839 springs . I ran it up to 6500 rpm on several occasions (as in as much as possible) w/o breakage.

I initially was going to strip everything off my iron 427 to build my aluminum one, and was going to reuse the rocker assembly, but at some point I decided to keep them with the iron block and build it too. That, and the fact I will be running around 650lbs open pressure springs w/ a Comp solid roller .739/.751, 276/286@50, 108 LSA, I opted for the Ersons because of the advertised rating of 1200lbs, plus at $700 set, they were $200 less than the pieces I put together over a decade ago.

IMO the key to keeping your rocker assemblies alive, esp with your cam and related spring pressures, will be keeping the shafts from flexing/breaking. Even though the Ersons have a smaller diameter shaft, they do have the end stands that wrap around the end rocker, where the shaft typically breaks.

As stated before, DSC has a couple again on ebay where I got mine. I noticed he took off his typical Buy It Now price, I guess it is [i]whatever the market will bear[i] now.
http://cgi.ebay.com/ebaymotors/ws/eB...015593492&rd=1
http://cgi.ebay.com/ebaymotors/ws/eB...211227996&rd=1

[767Jockey]

Originally Posted by cobrajam

For what it is worth, I ran Ford Power Parts roller rockers in my iron 427. The POPs are very similar, and may very well be the one and the same. I preferred the FPP rockers over the Doves because the FPPs have a bronze bushing (like the POPs) instead of the aluminum riding on the shafts like the Doves. I also liked the ball/ball ends of the push rods that were used. I did use the Dove stands/shafts due to the fact the end stands actually tied into the head studs. This was about 15 years ago and choices were more limited back them. I was using a solid Comp Cam roller, .645/.645, 246/246@50, 108 LSA, and either Comp 829 or 839 springs . I ran it up to 6500 rpm on several occasions (as in as much as possible) w/o breakage.

I initially was going to strip everything off my iron 427 to build my aluminum one, and was going to reuse the rocker assembly, but at some point I decided to keep them with the iron block and build it too. That, and the fact I will be running around 650lbs open pressure springs w/ a Comp solid roller .739/.751, 276/286@50, 108 LSA, I opted for the Ersons because of the advertised rating of 1200lbs, plus at $700 set, they were $200 less than the pieces I put together over a decade ago.

IMO the key to keeping your rocker assemblies alive, esp with your cam and related spring pressures, will be keeping the shafts from flexing/breaking. Even though the Ersons have a smaller diameter shaft, they do have the end stands that wrap around the end rocker, where the shaft typically breaks.

As stated before, DSC has a couple again on ebay where I got mine. I noticed he took off his typical Buy It Now price, I guess it is [i]whatever the market will bear[i] now.
http://cgi.ebay.com/ebaymotors/ws/eB...015593492&rd=1
http://cgi.ebay.com/ebaymotors/ws/eB...211227996&rd=1

No "Buy It Now" choice, but there is a reserve price, which at $510 and $503 has not yet been met. My guess is reserve is about what the "Buy It Now" price was. Can't say that I blame him.

[afret]

That, and the fact I will be running around 650lbs open pressure springs w/ a Comp solid roller .739/.751, 276/286@50, 108 LSA, I opted for the Ersons because of the advertised rating of 1200lbs, plus at $700 set, they were $200 less than the pieces I put together over a decade ago.

IMO the key to keeping your rocker assemblies alive, esp with your cam and related spring pressures, will be keeping the shafts from flexing/breaking. Even though the Ersons have a smaller diameter shaft, they do have the end stands that wrap around the end rocker, where the shaft typically breaks.

One thing you might consider is the strength of the helicoils in the rocker stand bolt holes in aluminum heads if you are running Edelbrocks. I know there are guys running 650 lb valve springs with the helicoils but I think there are cases of the helicoils getting pulled out with springs this strong. You might ask KC for his opinion. I took out the helicoils on the 2 sets of Edelbrocks I have with roller cam springs and replaced them with larger solid inserts (Ez-loks) for peace of mind. One is about 600 lbs open and the other is about 650 lbs open. Actually any more than this and T+D is the way to go.

The small diameter shaft in the Ersons is kind of worrisome. I have a couple sets of the Ersons and when I start installing them, the shaft flexes a lot more than with the setup I had with the thick chomoly shafts and endstands. Gives me a bit of a scare. I can't see how they can be stronger than the setup with the good shafts and endstands. I think the Erson shafts are only about 5/8 inch diameter compared to around .8 or so for the other shafts. The rockers themselves may be stronger than say the Harland Sharps, etc but there is no way a much smaller diameter shaft can be stronger especially when you have the large holes in the shaft for the rocker stand bolts. I'm not anti Erson since I do own them but the shaft itself seems to be the weak point in the system. I recall RobbMc who designed the system mentioned that shafts have broken but the stands capture it so you might not even know of the break. I don't remember hearing of too many cases of the POP chromoly shafts breaking if using endstands. I'm no engineer. JMHO