[DeTomaso] cleveland oiling

Rod Kunishige rkunishige at hotmail.com
Thu May 8 10:47:26 EDT 2008


Will,
My engine has both fixes.  The next rebuild will get the "Chevy" mods 'cause it just makes sense to me.  Meanwhile, the car will not see another track day.
Rod> From: wkooiman at earthlink.net> To: rkunishige at hotmail.com; justingreisberg at hotmail.com; detomaso at realbig.com> Subject: RE: [DeTomaso] cleveland oiling> Date: Thu, 8 May 2008 09:07:43 -0500> > Rod - what other oiling mods did you have?> > I would hesitate to apply instructions for one engine to another. The> instructions might be valid, but on the other hand, they might not be> addressing the real problem.> > In my opinion (I'm not a pro engine builder - I just have free opinions)...> > The #1 oil upgrade should be a Pantera specific oil pan. I used to watch> the oil pressure dip on long turns with my stock pan. When the pressure> gauge pointed to zero (yes - zero - it happened pretty fast), I would lift> on the throttle. After about 5 seconds, it would pop back up to where it> belongs. This was with a manual oil pressure gauge mounted in the proper> location at the rear. A week after I saw the gauge hit zero, I bought a> Pantera pan. I haven't seen the pressure hit zero since.> > The #2 oil upgrade should be the Moroso restrictor kit. You could instead> buy the proper allen head plugs and drill 'em yourself, but the Moroso kit> is only about $10. It doesn't have a plug for the #1 main-to-cam because> that's where the oil comes in. If you restrict it, you're restricting the> #1 main. You're supposed to be restricting the oil going to the cam> bearings. Take a look with the engine apart, and you'll see what I mean.> The procedure is probably different if you are using a hydraulic cam. I'm> running solids. I didn't pay attention to the hydraulic instructions.> > Some people restrict #1 by using a long tap and drilling/tapping past the> feed where the oil comes from the filter. I didn't do that, although I> think it is worthwhile.> > Here's a good discussion about 351C oil system mods. These guys are mostly> drag racers, but some are dirt track racers. The beat their 351C's hard,> and are having plenty of success with the engines staying together:> > http://www.network54.com/Forum/119419/thread/1207690007/Cam+bearing+oil+mods> > I don't buy-in to the idea of running a line from the hole near the fuel> pump to the pressure gauge location near the back. I don't think it hurts,> but I don't think it is necessary either.> > If all you do is install a proper 351C pan, you have solved most of the> oiling problems you'll ever have. If you are racing hard, you should> consider everything mentioned on the network54 thread.> > Will.> > -----Original Message-----> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On> Behalf Of Rod Kunishige> Sent: Thursday, May 08, 2008 1:05 AM> To: justingreisberg at hotmail.com; detomaso at realbig.com> Subject: Re: [DeTomaso] cleveland oiling> > > Justin,> My 351C starved the main bearings on a LV track run proves a design flaw. > > Pls consider using an old Chevy trick on your 351C documented in "Cheverolet> Power" book 5th edition 1984 from GM Service. Ample oil flow is supplied> the V6 chevys through grooving the Main Bearing Bores with a .125 groove to> retain some oil at the block side - page 1-6. The top bearing is drilled> with 4 additonal .125 holes to allow more oil to drop into the mains.> Simply, a reservoir of additional oil remains above to feed each main.> > Also, check page 3-11 to drill an oil hole for connecting rods.> > Your engine builder probably already has experience with this procedure but> has not applied it to the poorly designed oil system found in the 351C.> > My view is that this would not hurt the block but may be a better answer> than "supplementary" oiling systems.> > Be sure to cross drill the crank too.> > Remember these are words from a non-expert and no warranty is expressed or> implied.> > Rod> > Message: 3Date: Mon, 5 May 2008 05:10:45 -0700From: Justin Greisberg> <justingreisberg at hotmail.com>Subject: [DeTomaso] cleveland oilingTo:> <detomaso at list.realbig.com>Message-ID:> <BLU117-W16C72A4CEAB0C0C969DF6DA8D70 at phx.gbl>Content-Type: text/plain;> charset="iso-8859-1" I am about to give my short block to the machine shop.> I am making a serious street rebuild, and am confused about the best oiling> mods. I have been following on the cleveland forum, but it seems hard to get> any straight answers/ I know that oiling mods are of questionable value for> street motors, but they are cheap and probably can not hurt if DONE> CORRECTLY. 1. I plan to put the moroso oil restrictors in. Should I leave> out number 1 so as not to minimize oil to distributor gear?? 2. I plan to> leave out restrictor to lifter valley since I will be using hydraulic roller> lifters/ 3. I will add external oil line because it is so easy to do. 4. I> will use full grooved main bearings to optimize oil. Please help answer> number 1. thanks- justin> _________________________________________________________________> Stay in touch when you're away with Windows Live Messenger.> http://www.windowslive.com/messenger/overview.html?ocid=TXT_TAGLM_WL_Refresh> _messenger_052008> _______________________________________________> > Detomaso Forum Managed by POCA> > Archive Search Engine Now Available at http://www.realbig.com/detomaso/> > DeTomaso mailing list> DeTomaso at list.realbig.com> http://list.realbig.com/mailman/listinfo/detomaso> > 
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