Bullet Racing Cams-any issues? UPDATE
#337281
06/03/09 05:13 PM
06/03/09 05:13 PM
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Joined: Jun 2004
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HemiStan
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I had the intake off the Hemi today and just by chance I happened to look at one of the lobes on my cam. After I started investigating, several lobes looked like this one. I'm assuming this cam is about to start deteriorating quickly. This engine has about 3,000 miles on it. I'm pretty sure I took all of the necessary precations when I put it together. I checked lifter rotation in all of the bores, broke the cam in with the just the outer springs installed, used a moly based cam break-in lubricant, high zinc oil, etc. This is a Bullet Racing cam with a mid 600 lift with PPPC lifters. Has anyone had any issues with either of these products? Can anyone recommend a cam manufacturer? Thanks. Stan
Last edited by fourspd340; 06/09/09 11:31 AM.
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Re: Bullet Racing Cams-any issues?
[Re: HemiStan]
#337282
06/03/09 06:07 PM
06/03/09 06:07 PM
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Joined: Jan 2005
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dizuster
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Can you give us the exact cam specs? Might just be aggressive lobes. Does it get a lot of idle time, or street use? I'm not familliar with PPPC lifters. Did bullet recommend them? You have to be careful swaping lifter manufactures as the crown radius needs to match the lobe pitch angle for rotation. It's possible if it's got too much pitch and not enough crown it could have rotated by hand, but when loaded caused the lobe failure. Just my
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Re: Bullet Racing Cams-any issues?
[Re: dizuster]
#337283
06/03/09 06:16 PM
06/03/09 06:16 PM
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Joined: Jan 2003
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Hemi_Joel
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Definetely call Bullet and email them the pic. I'm sure they will want to know all the factors that could contribute, like at what lift is coil bind, etc. Good luck with it, Joel
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
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Re: Bullet Racing Cams-any issues?
[Re: Hemi_Joel]
#337284
06/03/09 07:27 PM
06/03/09 07:27 PM
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HemiStan
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Thanks for the responses. Here are some of the cam specs: Duration at .050 283 Lobe lift .4250 Duration at .020 313 Gross valve lift .667 Intake and .646 exhaust Quote:
Does it get a lot of idle time, or street use?
Both, actually. I've been driving it around alot.
I'm going to tear into it on Friday and check out a few things. I'm also going to give Bullet a call. I spoke with them at length prior to installing the cam. Hopefully we can figure something out.
Thanks.
Stan
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Re: Bullet Racing Cams-any issues?
[Re: HemiStan]
#337285
06/03/09 08:26 PM
06/03/09 08:26 PM
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Joined: Jan 2003
Posts: 12,814 Benton, IL.
DaveRS23
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The only cam I have ever lost a lobe on, was a Bullet-a couple of years ago. It didn't make it through break-in. They were very helpful-sent me another set-up for $100, I think. Every cam since then has come from Scott Brown, with no problems. And I think Scott has used several different cam grinders the last few years. Come to think of it, I think the Bullet cam was from Ray Barton. Does that sound right? It's been a few engines back and I loose track.
Master, again and still
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Re: Bullet Racing Cams-any issues?
[Re: HemiStan]
#337287
06/03/09 10:03 PM
06/03/09 10:03 PM
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Joined: Nov 2003
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Bob_Coomer
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Im glad you posted this. I have the Identical cam on the self for my Hemi. I picked it up from Barton last fall/winter. I will try to scan the Cam card, which is just a piece of paper copied from the original. Recc lash is as tight as I have ever seen which is .016/.017 HOT. LSA is a 109 BTW Sorry to hear about your troubles, I have a set of EDM Howards lifters I plan to try them with. So I would like to know how you like the cam, aside from the trouble your having. How does it idle? How do you have it installed? Care to give out some Engine specs? I am using a new World block 4.5x 4.5 for 572 inch, 13:1 compression, this cam, Cross ram setup, and CNC ported heads that go 460CFM.
[color:"red"]65 Hemi Belvedere coming soon [/color] [color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
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Re: Bullet Racing Cams-any issues?
[Re: Bob_Coomer]
#337288
06/03/09 10:45 PM
06/03/09 10:45 PM
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Anonymous
Unregistered
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Anonymous
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Talk to Mark Chapone at Bullet..He is their engineer..He is great to work with, he as been grinding me cams for quite a while...He has found some good HP for me over the conventional grinds.
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Re: Bullet Racing Cams-any issues?
[Re: HemiStan]
#337289
06/04/09 03:47 AM
06/04/09 03:47 AM
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goldmember
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I've dealt with Bullet cams many times since Ultradyne closed it's doors. No problems with the quality of the product but flat tappets can be a problem and no company is immune.Can you go with a street roller? It's funny that both an owner of Bullet cams and a sales person(formerly of comp cams) recommend and sell so many of the Ultradyne lobes.Guess they work pretty good for a certain Mopar pro stocker as well,even if they are ground in VA. Rumour is that UD lobes out sell the Bullet lobes(I won't name my source). I go back to the late 70's with Memphis cam companies and have many fond memories from Joe Lunati himself spending time digging up a free t-shirt for a certain 16 year old street rat to Harold Brookshire and the time and commitment to his craft and many more that most have never had the pleasure of meeting.I'll be dropping in on some old friends this summer. Sorry to get off topic it's late...
Last edited by goldmember; 06/04/09 03:56 AM.
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Re: Bullet Racing Cams-any issues?
[Re: HemiStan]
#337291
06/04/09 06:41 AM
06/04/09 06:41 AM
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72Challenger
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I have the exact same cam in my 528 Hemi and after a couple of years street/strip use I'm still happy with it. Idles very lumpy and pulls like a raped ape. Got it from Barton too when I assembled the Hemi in 2004/2005. They did advice (and I did) me getting shubeck lifters for it because of the streetduty as in idle at some traffic lights and stuff like that.
'
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Re: Bullet Racing Cams-any issues?
[Re: 72Challenger]
#337292
06/04/09 07:50 AM
06/04/09 07:50 AM
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Posts: 16,123 Grand Haven, MI
patrick
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I Live Here
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as a tangent, I'm looking at getting a hydraulic roller reground with bullet, anyone have any issues with their roller cams?
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Bullet Racing Cams-any issues?
[Re: Bob_Coomer]
#337297
06/09/09 11:31 AM
06/09/09 11:31 AM
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HemiStan
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OK. I finally got some time to do some more work on this. Here is a photo of a couple of the lifters. I'm not an expert at reading these but these look to be in excellent shape. All of the lifters look like this. If anyone notices anything odd, please let me know. They all have a nice crown on them.
I spoke with Richard at Bullet and with PPPC yesterday to try and figure something out. They both recommended Joe Gibbs break-in oil so that is what I will be using when it goes back together. Bullet is going to re-grind the cam for me but I have a mid .500 lift Sig Erson cam that I am going to put into it for the time being. I also have a new set of heads and intake that I will be using as well.
Although I wasn't able to definitively put my finger on a specific root cause, I'm leaning torwards the initial break-in. I used a moly based cam lubricant, a bottle of GM EOS, and Valvoline diesel oil (CI-4 rated, which I was told had good zinc properties). Anyways, with that cam and springs, I just don't think that oil was up to the task.
One lesson learned is to always uses a high quality oil filter. Even though my cam was chewed up, the inside of the engine was spotless.
If anyone has any thoughts, please feel free to post them.
Thanks.
Stan
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Re: Bullet Racing Cams-any issues?
[Re: HemiStan]
#337300
06/09/09 07:02 PM
06/09/09 07:02 PM
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Joined: Jan 2005
Posts: 3,639 Oakland, MI
dizuster
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Quote:
OK. Although I wasn't able to definitively put my finger on a specific root cause, I'm leaning torwards the initial break-in. I used a moly based cam lubricant, a bottle of GM EOS, and Valvoline diesel oil (CI-4 rated, which I was told had good zinc properties). Anyways, with that cam and springs, I just don't think that oil was up to the task.
We use diesel oil on all of our flat tappet cam break in's. Never had a problem with one since we started using it. With the lobes lubed up good, diesel oil, and EOS, I highly doubt that it was the oil.
My
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