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Indy Maxx aluminum block concerns? #163297 12/06/08 02:13 PM 12/06/08 02:13 PM
Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A 4 4404dart OP pro stock
4404dart OP pro stock 4 Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A	I talked to a local Mopar racer recently, that had some problems with his Indy Maxx block. In this pic I'm showing the oil drain back holes in the valley. He said they were no where near big enough, and that they drilled more holes, then ended up slotting that area like stock. He was getting a bunch of oil in the vaccuum pump overflow, untill they got the oil to drain out of the valley. Have you guys seen this? I have no reason to doubt him. Thanks,Dave.

Re: Indy Maxx aluminum block concerns? [Re: 4404dart] #163298 12/06/08 02:16 PM 12/06/08 02:16 PM
Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A 4 4404dart OP pro stock
4404dart OP pro stock 4 Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A	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 preasure. 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.

Re: Indy Maxx aluminum block concerns? [Re: 4404dart] #163299 12/06/08 02:20 PM 12/06/08 02:20 PM
Joined: Feb 2007 Posts: 6,295 U.S. M moparniac master
moparniac master M Joined: Feb 2007 Posts: 6,295 U.S.	not a problen on my buddies down at the shop.. goes 8's on motor but needed alot of pushrod clearance... Mopar Performance

Re: Indy Maxx aluminum block concerns? [Re: moparniac] #163300 12/06/08 05:16 PM 12/06/08 05:16 PM
Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A 4 4404dart OP pro stock
4404dart OP pro stock 4 Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A	I'll make sure to check that, thanks. Mine came rough bored, and I'll have MPG here finish hone it, but his came finish honed, and had 20 % leak down, untill they re-honed it.

Re: Indy Maxx aluminum block concerns? [Re: 4404dart] #163301 12/06/08 05:40 PM 12/06/08 05:40 PM
Joined: Nov 2003 Posts: 6,293 Rock Springs Bob_Coomer master
Bob_Coomer master Joined: Nov 2003 Posts: 6,293 Rock Springs	I have never heard such problems. I also inquired about the smallish drain back holes in the valley area. It is just not a problem. I have a few buddies with the Indy maxx blocks as well. None of us has had any issues with these blocks. I would say that the incident with the cam bearings isn't the blocks fault, the machinist should have caught the problem,Sounded like the fit was off. And he is pointing fingers [color:"red"]65 Hemi Belvedere coming soon [/color] [color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]

Re: Indy Maxx aluminum block concerns? [Re: Bob_Coomer] #163302 12/06/08 05:51 PM 12/06/08 05:51 PM
Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A 4 4404dart OP pro stock
4404dart OP pro stock 4 Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A	Thanks for the input! The block came from Indy finish honed, cam bearings installed etc. Indy was the machinist. Controlling the oil drain back seems like a good idea, and not letting it just splash all over the crank? I'm just checking, this is a big investment for me, I only want to do it once.

Re: Indy Maxx aluminum block concerns? [Re: 4404dart] #163303 12/06/08 07:49 PM 12/06/08 07:49 PM
Joined: Sep 2007 Posts: 876 Arizona PolyDart super stock
PolyDart super stock Joined: Sep 2007 Posts: 876 Arizona	My cam bearings were also installed by Indy... I purchased mine rough bored also since I've heard bad stuff about the machine work that comes out of their shop. Last thing I want to worry about is spinning cam bearings. That's not something I thought they could screw up Quote: Thanks for the input! The block came from Indy finish honed, cam bearings installed etc. Indy was the machinist. Controlling the oil drain back seems like a good idea, and not letting it just splash all over the crank? I'm just checking, this is a big investment for me, I only want to do it once. 1970 Dart Resto-Race Project 1960 Dodge Dart Seneca Dual Quad 390 Poly

Re: Indy Maxx aluminum block concerns? [Re: 4404dart] #163304 12/06/08 07:52 PM 12/06/08 07:52 PM
Joined: Jan 2003 Posts: 5,875 communist bloc of new jersey J jamesc master
jamesc master J Joined: Jan 2003 Posts: 5,875 communist bloc of new jersey	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?

Re: Indy Maxx aluminum block concerns? [Re: jamesc] #163305 12/06/08 09:43 PM 12/06/08 09:43 PM
A Anonymous Unregistered
Anonymous Unregistered A	I get almost 1100hp out of my 588 there have been zero problems with the block. 4862367-coronet093.jpg (761 downloads)

Re: Indy Maxx aluminum block concerns? [Re: 4404dart] #163306 12/06/08 09:51 PM 12/06/08 09:51 PM
Joined: Jul 2004 Posts: 653 Fredericksburg Va P plycuda mopar
plycuda mopar P Joined: Jul 2004 Posts: 653 Fredericksburg Va	3 of my cam bearings moved 1 turned 180 degrees, and I'm definitely having problems with the oil getting back down to the pan.

Re: Indy Maxx aluminum block concerns? [Re: plycuda] #163307 12/06/08 11:09 PM 12/06/08 11:09 PM
Joined: Nov 2007 Posts: 778 Sherwood park, Alberta. go green super stock
go green super stock Joined: Nov 2007 Posts: 778 Sherwood park, Alberta.	Been there done that . Oil drain back is a problem with them. Just put a 2 " window by the cam gear wall and connect the 8 holes in the oil gallery. Part of the problem of the block is that any positive crank case pressure has to pass through those 8 little holes. ( consequently the oil has to go them going the other direction ). 6.50 @ 226 MPH 4.25 @ 186 MPH https://www.youtube.com/watch?v=YX86DHGKBo0

Re: Indy Maxx aluminum block concerns? [Re: jamesc] #163308 12/06/08 11:39 PM 12/06/08 11:39 PM
Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A 4 4404dart OP pro stock
4404dart OP pro stock 4 Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A	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? I am also going to an aluminum rod, and those have to have a bearing with a hole because they're pinned. I'm seeing a trend? But some can use the blocks without modifying them? Not sure about your KB block, but I'm thinking the pins are for movement? Thanks.

Re: Indy Maxx aluminum block concerns? #163309 12/06/08 11:41 PM 12/06/08 11:41 PM
Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A 4 4404dart OP pro stock
4404dart OP pro stock 4 Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A	Well that's about what mine will make spraying my car up here. I should be ok, but will I be one of the unlucky ones? That's what I am trying to figure out? Thanks.

Re: Indy Maxx aluminum block concerns? [Re: plycuda] #163310 12/06/08 11:43 PM 12/06/08 11:43 PM
Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A 4 4404dart OP pro stock
4404dart OP pro stock 4 Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A	Maybe just a drilled and tapped set screw from the top side of the block?

Re: Indy Maxx aluminum block concerns? [Re: go green] #163311 12/06/08 11:46 PM 12/06/08 11:46 PM
Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A 4 4404dart OP pro stock
4404dart OP pro stock 4 Joined: Jun 2005 Posts: 1,283 Colorado,U.S.A	Quote: Been there done that . Oil drain back is a problem with them. Just put a 2 " window by the cam gear wall and connect the 8 holes in the oil gallery. Part of the problem of the block is that any positive crank case pressure has to pass through those 8 little holes. ( consequently the oil has to go them going the other direction ). Thanks. That's what this guy was telling me. They were on the dyno, took the access plate off the valley cover, and the lifter valley was full of oil? I was worried about strength connecting the holes?

Re: Indy Maxx aluminum block concerns? [Re: go green] #163312 12/06/08 11:57 PM 12/06/08 11:57 PM
Joined: Jun 2007 Posts: 2,432 NorCal RylisPro top fuel
RylisPro top fuel Joined: Jun 2007 Posts: 2,432 NorCal	Quote: Part of the problem of the block is that any positive crank case pressure has to pass through those 8 little holes. ( consequently the oil has to go them going the other direction ). would you still have that problem if used with a dry sump pump? gonna use one on mine 73 `Cuda Instagram: @rylispro YouTube: RylisPro www.rylispro.com 925-214-9192

Re: Indy Maxx aluminum block concerns? [Re: RylisPro] #163313 12/07/08 12:08 AM 12/07/08 12:08 AM
Joined: Apr 2005 Posts: 1,107 Quebec, Canada D Diablo super stock
Diablo super stock D Joined: Apr 2005 Posts: 1,107 Quebec, Canada	Quote: Quote: Part of the problem of the block is that any positive crank case pressure has to pass through those 8 little holes. ( consequently the oil has to go them going the other direction ). would you still have that problem if used with a dry sump pump? gonna use one on mine Hmmm so the vacuum pump is usually sucking from the valve cover sucking up through those little holes, then the dry sump is sucking down, the oil won;t know where to go. I've got a KB block right now and there is plenty of room for the oil to drain back down. When this new engine build is done it will have a dry sump and vacumm pump:) With the Indy block i would open up the holes bigger. Just IMO

Re: Indy Maxx aluminum block concerns? [Re: RylisPro] #163314 12/07/08 12:11 AM 12/07/08 12:11 AM
Joined: Aug 2003 Posts: 4,774 On the parachute mount N n20mstr master
n20mstr master N Joined: Aug 2003 Posts: 4,774 On the parachute mount	i have an indy block, my cam bearing were very tight, i put in the cam and could not turn it at all, i had to scrape them all to get the cam to turn easy, 200 passes so far no problems, on the drain back, i would rather drill and tap the rear of the heads like a B! to get the oil back to the pan, rather than open those holes. Id rather route the oil around the rotating assemble than dump MORE oil on top of it.... Like i say, my block has 200 passes on the first build up of it, its coming out now so ill see how the bearings look, i dont have a drainback problem that im aware of. ....BAD A$$ STREET CAR.....

Re: Indy Maxx aluminum block concerns? [Re: n20mstr] #163315 12/07/08 01:30 AM 12/07/08 01:30 AM
Joined: Jan 2003 Posts: 8,194 Detroit, MI CokeBottleKid master
CokeBottleKid master Joined: Jan 2003 Posts: 8,194 Detroit, MI	I believe I have an oil drain-back issue, I did some investigation and calcs to restrict the rocker oil flow to help with this. To all that don't have issues, are you running Indy heads? Or other heads that use non-stock rocker oiling?

Re: Indy Maxx aluminum block concerns? [Re: n20mstr] #163316 12/07/08 02:06 AM 12/07/08 02:06 AM
Joined: Nov 2007 Posts: 778 Sherwood park, Alberta. go green super stock
go green super stock Joined: Nov 2007 Posts: 778 Sherwood park, Alberta.	My cam was WAY tight all so . The main caps were crooked. Decks were out of square . Thread engagement was inadequate on the head bolts . Poor windage in crank area . Deck surface had porosity. poor casting in water transfer ports . I have a KB block now and it is Quality . No complaints 6.50 @ 226 MPH 4.25 @ 186 MPH https://www.youtube.com/watch?v=YX86DHGKBo0

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