blown 540 26 cat boat, parker labor day
+ Reply to Thread
Page 1 of 3 1 2 3 LastLast
Results 1 to 14 of 29

Thread:
blown 540 26 cat boat, parker labor day

  1. #1
    Senior Member Smallblocksperry's Avatar
    Join Date
    Jul 2011
    Posts
    397

    Default blown 540 26 cat boat, parker labor day

    boat ran hard all day saturday, 6,000RPMS spinning a labbed 30P on a 1.36 gear'd bravo drive

    motors only at 6 PSI and im close to the 120MPH mark, boats super light compared to the rest of the cats my size.

    everything was golden until sunday afternoon, was about to jump on it from a 70mph roll when she felt like it all of the sudden lost ignition. diagnosed it while getting towed back, cam is not turning..... GREAT! looks like i have to pull the motor for the 4th time this month!

    i used a JEGS brand billet timing chain set with the torrington bearing and a cam button

    anyone want to guess what component failed, i'll be ripping the motor apart this weekend

    540 dart block, eagle rotating assembly 8.25-1 je pistons
    brodix BB2 320cc heads
    solid roller comp billet cam/lifters/rockers/girdles
    .650"/.650" lift .252/[email protected] on a 114
    8-71 littlefield/ 3" superchiller
    dual 4779 750 DP's no P/V's jetted 84/90
    timing locked at 31
    MSD 8551/ 6M
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	cat boat 1.jpg 
Views:	42 
Size:	9.6 KB 
ID:	370137   Click image for larger version. 

Name:	cat boat.jpg 
Views:	38 
Size:	9.1 KB 
ID:	370145   Click image for larger version. 

Name:	blown 540.jpg 
Views:	51 
Size:	14.3 KB 
ID:	370153  

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Senior Member Skydog's Avatar
    Join Date
    Jul 2010
    Posts
    702

    Default

    Damn sorry, that sucks.... timming chain?

  4. #3
    Senior Member Smallblocksperry's Avatar
    Join Date
    Jul 2011
    Posts
    397

    Default

    Quote Originally Posted by Skydog View Post
    Damn sorry, that sucks.... timming chain?

    im thinking that Jegs brand billet timing chain set couldnt hold up, but the motor only had like 10 hours on it.

    i'm hoping i didnt bend any valves, those inconel rose tipped valves get pretty expensive. i have titanium retainers so i would hope it didnt drop a valve and cause off of this, but you never know until i tear it apart.

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    steelcomp was here
    Join Date
    Dec 2007
    Location
    n/e TN
    Posts
    26,269

    Default

    Quote Originally Posted by Smallblocksperry View Post
    im thinking that Jegs brand billet timing chain set couldnt hold up, but the motor only had like 10 hours on it.

    i'm hoping i didnt bend any valves, those inconel rose tipped valves get pretty expensive. i have titanium retainers so i would hope it didnt drop a valve and cause off of this, but you never know until i tear it apart.
    There's only one roller timing set I'd run for this application and that's a Rollmaster. I'll keep my fingers crossed for you, but history says it's not going to be pretty.
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  7. #5
    Platinum Member BigSteve's Avatar
    Join Date
    Feb 2008
    Location
    Close to the water...
    Posts
    2,014

    Default

    Quote Originally Posted by steelcomp View Post
    There's only one roller timing set I'd run for this application and that's a Rollmaster. I'll keep my fingers crossed for you, but history says it's not going to be pretty.
    Oh ! It's going to get real ugly

  8. #6
    steelcomp was here
    Join Date
    Dec 2007
    Location
    n/e TN
    Posts
    26,269

    Default

    Quote Originally Posted by BigSteve View Post
    Oh ! It's going to get real ugly
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  9. #7
    Distinguished Member David 519's Avatar
    Join Date
    Jan 2008
    Location
    NorCal
    Posts
    5,754

    Default

    Quote Originally Posted by Smallblocksperry View Post
    im thinking that Jegs brand billet timing chain set couldnt hold up, but the motor only had like 10 hours on it.

    i'm hoping i didnt bend any valves, those inconel rose tipped valves get pretty expensive. i have titanium retainers so i would hope it didnt drop a valve and cause off of this, but you never know until i tear it apart.
    Personally, I'd have a hard time believing the chain broke without something else going on. It's a small cam and not a lot of boost so the chain shouldn't see a lot of abuse. I'd look at the bolts holding the cam sprocket to see if something slipped or a valve spring broke and the piston tagged a valve starting a chain of events. Regardless, you bent at least a few valves when the cam stopped and the crank didn't..... Hope for the best and keep us posted.
    Quote Originally Posted by gn7 View Post
    ....... David 519 is 100% correct........

    Quote Originally Posted by fuelinmyveins82 View Post
    .....I think people forget that racing is supposed to fun. Losing shouldn't be discouraging it should motivate you work on your pile to make it faster.....

  10. #8
    Some guy obnoxious001's Avatar
    Join Date
    Dec 2007
    Posts
    3,570

    Default

    Quote Originally Posted by Smallblocksperry View Post
    boat ran hard all day saturday, 6,000RPMS spinning a labbed 30P on a 1.36 gear'd bravo drive

    motors only at 6 PSI and im close to the 120MPH mark, boats super light compared to the rest of the cats my size.

    everything was golden until sunday afternoon, was about to jump on it from a 70mph roll when she felt like it all of the sudden lost ignition. diagnosed it while getting towed back, cam is not turning..... GREAT! looks like i have to pull the motor for the 4th time this month!

    i used a JEGS brand billet timing chain set with the torrington bearing and a cam button

    anyone want to guess what component failed, i'll be ripping the motor apart this weekend

    540 dart block, eagle rotating assembly 8.25-1 je pistons
    brodix BB2 320cc heads
    solid roller comp billet cam/lifters/rockers/girdles
    .650"/.650" lift .252/[email protected] on a 114
    8-71 littlefield/ 3" superchiller
    dual 4779 750 DP's no P/V's jetted 84/90
    timing locked at 31
    MSD 8551/ 6M
    Is that a 2 piece roller cam (iron gear)? In the past I have heard of the iron gear shearing pins, so the distributor stops turning, but the valves would not be damaged. Had one happen on a ski race engine at 2001 Worlds at Lake Mead.

  11. #9
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    I hate hearing this stuff. Barry is right, occasionally, if the cam has a iron gear option with the pressed and pinned gear, it will shear the pin. Not common, but it does happen. I much prefer the pressed and keyed arrangement, but not all cam core suppliers are using that setup.

    In the 12 years I have been messing with this stuff, I learned 2 things that are no stead fast rules with me. No more chains, no more iron oil pumps.
    The price of a Milodon, Donovan, or Muldoon T gear drive and billet oil pumps is CHEAP compared to the failure of either. On drag deal where you can change the chain out every couple years, they are fine, if you use a GOOD one. In a recreational boat you put more time on the engine in one weekend than a drag boat does in a year. I don't care how small the cam is, its a roller, and the RPM is not what a street car is. Aside from the cost of the repairs, your weekend was trashed, and you spent the cash for your stay and the gas to get there and back.

    The Rollmaster chain is probably the best setup out there, but their chain itself is the same chain that is available from others as well, IFyou buy their Premium set. Rollmaster's main claim to fame is the accuracy of the T set itself. The number of JUNK T sets out there is depressing, even with the names you would think were good chain sets. I.E. CLOYES! The biggest names in T sets sell JUNK just like everyone else. Rollmaster sells GOOD, and BETTER. If you buy someone else's premium chain set, you can get the same or similar chain, but you'll pay more for it than a Rollmaster.


    Rule #1 smallblock, NO MORE NO NAME PARTS that can ruin your engine. Wan to buy Jegs brand? Buy valve covers, spark wire sets, blinger bolt kits, etc. If it MOVES, buy a known part.

    Everytime I read something like this on a blower motor, I have to ask. Are you running a damper, or a blower hub. If you think the damper doesn't play a HUGE part in the life and failure of a T chain, guess again!!! If you are running a damper, WHO"S



    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3
    Last edited by gn7; 09-03-2013 at 09:54 PM.

  12. #10
    Senior Member Smallblocksperry's Avatar
    Join Date
    Jul 2011
    Posts
    397

    Default

    [QUOTE=gn7;2539649]I hate hearing this stuff. Barry is right, occasionally, if the cam has a iron gear option with the pressed and pinned gear, it will shear the pin. Not common, but it does happen. I much prefer the pressed and keyed arrangement, but not all cam core suppliers are using that setup.

    In the 12 years I have been messing with this stuff, I learned 2 things that are no stead fast rules with me. No more chains, no more iron oil pumps.
    The price of a Milodon, Donovan, or Muldoon T gear drive and billet oil pumps is CHEAP compared to the failure of either. On drag deal where you can change the chain out every couple years, they are fine, if you use a GOOD one. In a recreational boat you put more time on the engine in one weekend than a drag boat does in a year. I don't care how small the cam is, its a roller, and the RPM is not what a street car is. Aside from the cost of the repairs, your weekend was trashed, and you spent the cash for your stay and the gas to get there and back.

    The Rollmaster chain is probably the best setup out there, but their chain itself is the same chain that is available from others as well, IFyou buy their Premium set. Rollmaster's main claim to fame is the accuracy of the T set itself. The number of JUNK T sets out there is depressing, even with the names you would think were good chain sets. I.E. CLOYES! The biggest names in T sets sell JUNK just like everyone else. Rollmaster sells GOOD, and BETTER. If you buy someone else's premium chain set, you can get the same or similar chain, but you'll pay more for it than a Rollmaster.


    Rule #1 smallblock, NO MORE NO NAME PARTS that can ruin your engine. Wan to buy Jegs brand? Buy valve covers, spark wire sets, blinger bolt kits, etc. If it MOVES, buy a known part.



    haha im running JEGS brand supercharger balancer 7" neutral balance.

    i do have a billet cam with a pressed on gear but i can see the cam lobes once i pulled the dist. and they arent spinning. i was hoping it was that pressed on gear.

    hopefully its not to ugly in there.

    what about jessel belt drive, i'm thinking just upgrade to that, i already upgraded to a moroso billet oil pump like GN7 said, and i have no regrets at all with that, 75PSI all day, hot or cold

  13. #11
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    Quote Originally Posted by Smallblocksperry View Post



    haha im running JEGS brand supercharger balancer 7" neutral balance.

    i do have a billet cam with a pressed on gear but i can see the cam lobes once i pulled the dist. and they arent spinning. i was hoping it was that pressed on gear.

    hopefully its not to ugly in there.

    what about jessel belt drive, i'm thinking just upgrade to that, i already upgraded to a moroso billet oil pump like GN7 said, and i have no regrets at all with that, 75PSI all day, hot or cold
    That's one of those few parts sold under the Jegs brand that isn't half bad. Fairly certain its a Pioneer damper
    Keep in mind the Jesel belt is a maintenance item, and does need replacing. But then, with a roller cam, so is the T chain.



    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3
    Last edited by gn7; 09-04-2013 at 02:08 PM.

  14. #12
    Senior Member SHAWN DAVIS's Avatar
    Join Date
    Jan 2012
    Location
    lake Charles, Louisiana
    Posts
    640

    Default

    A quality chain should be no problem in that application
    Got em in the offshore boat 4 years straight and no problems, .720 lift solid rollers
    I'm leaning towards loose bolts on the gear

  15. #13
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    Quote Originally Posted by SHAWN DAVIS View Post
    A quality chain should be no problem in that application
    Got em in the offshore boat 4 years straight and no problems, .720 lift solid rollers
    I'm leaning towards loose bolts on the gear
    Chains are like springs. Some last hours, some last seasons. I guess it has a little to do with if the chain comes from Germany or England, or it comes from China or India



    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3
    Last edited by gn7; 09-04-2013 at 02:59 PM.

  16. #14
    Senior Member Smallblocksperry's Avatar
    Join Date
    Jul 2011
    Posts
    397

    Default

    Quote Originally Posted by SHAWN DAVIS View Post
    A quality chain should be no problem in that application
    Got em in the offshore boat 4 years straight and no problems, .720 lift solid rollers
    I'm leaning towards loose bolts on the gear


    i doubt the bolts came loose, i red loctited them and used that backing plate with the locking tabs, but you never know...

    that jegs timing chain set seemed like a nice piece, i didnt think this motor would see to much high RPM abuse, but it did stay up there at 6,000RPMS quite a while. Had to break off a handful of cats last weekend, its funny how many people tell you their boat goes 120+ when in reality they arent even breaking a hundred.

    wired for sound blown 26 daytona
    red/white blown 25 Warlock
    and my old mans blue/white 25 warlock

    more to come, haha

    desert storm 2014 its on.....

+ Reply to Thread
Page 1 of 3 1 2 3 LastLast

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in

Tags for this Thread

Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95