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Re: Indy Maxx aluminum block concerns?
[Re: rebel]
#163318
12/07/08 10:58 AM
12/07/08 10:58 AM
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441
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master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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Not a big block engine builder.....
May someday have a predator head engine and then will get into the BB blocks.
Some things to consider.
As someone else said it is hard to pull vacuum up top and expect the oil to drain down.
Most of these engines have way too much oil going to the valve gear, as someone else mentioned restricting the oil circuit.
How tight the cam is in the bearing only has a little to do with how tight the bearing is in the block. Although one would think if it is tight on the cam it probably is tighter in the block.
If I were building an Indy Maxx block I might try to use some of the many tricks I'm using on my small block.
Bush the lifters and pushrod oil the valvetrain. If you have someone doing the work that as a clue you can put the oil feed hole where you need it in the bushing and just big enough to get the job done .028".
Bore the cam tunnel and using needle beaing roller cam bearings. They may turn easier in an alluminum block than babbit but you wont block the oil hole off sense there is none. These bearing could also be pinned.
The oil drainbackholes need to be dealt with. Just haven't heard my way of dealing with this in this thread. Drill new hole out as close as you can to the rear of the lifter galley as under acceleration it shoud drain behind the crank and rods. You can also drill a large hole out in the very front so under decelaration you can get oil back to the pan. The factory holes need to be drill out and threaded to half inch pipe. Make some brass or alluminum pipe that will screw into the block and reach just shy of the valley pan. This will allow for ventelation of crank case pressure but not interfere with drain back.
Hope you can find some use of my ideas.
Leon
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: Indy Maxx aluminum block concerns?
[Re: Leon441]
#163320
12/07/08 12:47 PM
12/07/08 12:47 PM
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Joined: Jun 2005
Posts: 1,283
Colorado,U.S.A
4404dart
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OP
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Posts: 1,283
Colorado,U.S.A
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Thanks everyone for all the good info!  I am getting the idea I better check everything. Restrict the oil to the heads. Increase/control drainback. Maybe go to pushrod oiling, instead of the spraybar setup it comes with(572 heads). And check into "pinning" the cam bearings. Thanks again,Dave. 
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Re: Indy Maxx aluminum block concerns?
[Re: 4404dart]
#163322
12/07/08 01:38 PM
12/07/08 01:38 PM
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441
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master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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Don't know if you caught this. But, it is very wise to put stacks in the valley area. This allows crankcase ventilation without restricting oil return. Have to thank Ray Barton for that idea.
Leon
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: Indy Maxx aluminum block concerns?
[Re: Leon441]
#163323
12/07/08 02:18 PM
12/07/08 02:18 PM
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Joined: Jun 2005
Posts: 1,283
Colorado,U.S.A
4404dart
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Thanks, I reread your post. So the new holes allow the drainback, but where you want it to drainback, in the front and the back, and the existing holes now would have the stacks, allowing ventilation, but no drainback through these stacks, correct? Plus your restricting the oil to the heads anyway so there isn't that much needing to get back to the pan? Thanks!
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Re: Indy Maxx aluminum block concerns?
[Re: jamesc]
#163324
12/07/08 05:01 PM
12/07/08 05:01 PM
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Joined: May 2008
Posts: 19
California
90%
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member
Joined: May 2008
Posts: 19
California
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Quote:
Hmmm...i noticed the cam bearings in my new KB block had roll pins in them. i was thinking it was for oil restriction but maybe it's to keep them from turning...or both. anyone know for sure?
Hi Jim:
The pins are both, restrictors and pinned for saftey, if the cam bearings doesn't have .003 - .004 crush the bearings could spin, if #4 cam bearing spins, it will block the oil to the heads.
Tom (KBRE)
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Post deleted by Defbob
[Re: 90%]
#163325
12/07/08 05:25 PM
12/07/08 05:25 PM
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Anonymous
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Anonymous
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Re: Indy Maxx aluminum block concerns?
[Re: 4404dart]
#163326
12/07/08 05:42 PM
12/07/08 05:42 PM
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Joined: Jan 2003
Posts: 1,938
Sonora CA
Mopar_Rich
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,938
Sonora CA
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Quote:
In this pic I'm just showing a cam bearing. He said that #3 and #4 came loose while the car was running, and almost lost oil pressure. The cam turned over real easy, but he's saying because the aluminum expands and contracts, they come loose, unless you pin them? You guys seen this one? Still thanks, Dave.
All aluminum blocks can exhibit this problem. I ran into this with KB blocks, back at Mopar Engines West, several years ago. Ken Black promptly admitted that this could happen, so he started pinning all the cam bearings prior to shipment. I never had an issue after that. That was Ken Black coming through again! I hope he finds a buyer for KB and survives.
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Re: Indy Maxx aluminum block concerns?
#163327
12/07/08 07:52 PM
12/07/08 07:52 PM
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Joined: Jun 2005
Posts: 1,283
Colorado,U.S.A
4404dart
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OP
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Quote:
Quote:
He was getting a bunch of oil in the vaccuum pump overflow, untill they got the oil to drain out of the valley.
was the vac line tapped into the lifter valley cover or a valve cover ?
Valve cover I think?
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Post deleted by Defbob
[Re: 4404dart]
#163328
12/07/08 08:23 PM
12/07/08 08:23 PM
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Anonymous
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Re: Indy Maxx aluminum block concerns?
[Re: 4404dart]
#163329
02/16/10 03:19 PM
02/16/10 03:19 PM
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Joined: Sep 2007
Posts: 876
Arizona
PolyDart
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Arizona
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I just haven't been able to get this thread out of my mind... I'm getting real close to reassembling my car and I just don't want to end up with spun cam bearings and the resulting problems. Does anyone have pictures of your pinned cam bearings? Or could you at least describe the process in detail? Thanks!
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Re: Indy Maxx aluminum block concerns?
[Re: PolyDart]
#163331
02/16/10 08:49 PM
02/16/10 08:49 PM
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Joined: Jan 2010
Posts: 588
Franklin, TN
23T Hemmee
mopar
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mopar
Joined: Jan 2010
Posts: 588
Franklin, TN
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Rick asked
"Does anyone have pictures of your pinned cam bearings? Or could you at least describe the process in detail?"
Rick,
All they are is allen head set screws, 1/4x20, I think, drilled with a .050-.060" hole, the oil feed from main to cam bearing is tapped, the set screw is run up to the cam bearing hole, and keeps bearing from rotating, need to be checked to make sure they don't extend through the hole into the cam itself, may take just a kiss with a die grinder, then final clean and loctite in place.
Last edited by 23T Hemmee; 02/16/10 08:50 PM.
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Re: Indy Maxx aluminum block concerns?
#163332
02/16/10 10:09 PM
02/16/10 10:09 PM
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Joined: Jun 2009
Posts: 877
ky
68roadrunner
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ky
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Quote:
I asked because no one I know has had any luck pulling from the valley even with baffels.
i saw a big chevy engine that had the vacumn line plumbed in to the fuel pump block off plate. Will this work properly, seems the blow by would start in the lower part of the engine?
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Re: Indy Maxx aluminum block concerns?
[Re: 23T Hemmee]
#163333
02/17/10 12:54 AM
02/17/10 12:54 AM
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Joined: Sep 2007
Posts: 876
Arizona
PolyDart
super stock
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Arizona
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Thanks for the info Quote:
Rick,
All they are is allen head set screws, 1/4x20, I think, drilled with a .050-.060" hole, the oil feed from main to cam bearing is tapped, the set screw is run up to the cam bearing hole, and keeps bearing from rotating, need to be checked to make sure they don't extend through the hole into the cam itself, may take just a kiss with a die grinder, then final clean and loctite in place.
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Re: Indy Maxx aluminum block concerns?
#163334
02/18/10 11:20 PM
02/18/10 11:20 PM
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Anonymous
Unregistered
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Anonymous
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Quote:
I get almost 1100hp out of my 588 there have been zero problems with the block.
this is for you TOADIE!
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Re: Indy Maxx aluminum block concerns?
[Re: Leon441]
#163335
02/18/10 11:36 PM
02/18/10 11:36 PM
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Joined: May 2007
Posts: 174
Oklahoma
hemiiroc
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member
Joined: May 2007
Posts: 174
Oklahoma
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Quote:
Don't know if you caught this. But, it is very wise to put stacks in the valley area. This allows crankcase ventilation without restricting oil return. Have to thank Ray Barton for that idea.
Leon
Don't know if that was Ray Barton's idea---they have been doing it on chevys for YEARS--way before there was even an indy block
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Re: Indy Maxx aluminum block concerns?
[Re: PolyDart]
#163336
02/19/10 11:49 AM
02/19/10 11:49 AM
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Joined: Jun 2005
Posts: 1,283
Colorado,U.S.A
4404dart
OP
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OP
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Posts: 1,283
Colorado,U.S.A
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Quote:
I just haven't been able to get this thread out of my mind... I'm getting real close to reassembling my car and I just don't want to end up with spun cam bearings and the resulting problems.
Does anyone have pictures of your pinned cam bearings? Or could you at least describe the process in detail?
Thanks!
Just a update from my original post.
I ran the car/block last year with the cam bearings green loctited, and it worked great. I did increase the drain back holes, especially in the front and rear of the block, worked great. The deck was really square on the block, and after having MPG ( engine masters competitors )torque plate hone the block, it ended up being a nice quality part. The used 572 heads I have is a whole nuther story.
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