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« Reply #30 on: February 24, 2009, 16:39:26 pm » |
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I filed off the tang on one half of the bearing. Always modify the cheaper part ;-)
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Jesse/DVK
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« Reply #31 on: February 24, 2009, 17:31:08 pm » |
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Thanks, I just did  |
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Der Vollgas Kreuzers
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richie
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« Reply #32 on: February 24, 2009, 19:31:32 pm » |
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And now..another hot topic for you all..do you guys run stock oil strainer in your hi-po engines? Some opinions are it can be restrictive for oil flow to the oil pickup, but also it can protect oil pump in case of engine failure..
The cheap aftermarket ones have much bigger holes in and shouldnt be restrictive like the early factory ones may have been,but if you have engine failure to that extreme the oil pump is the least of you worries  cheers richie |
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Cars are supposed to be driven, not just talked about!!! Good parts might be expensive but good advice is priceless  |
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Jonny Grigg
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« Reply #33 on: February 26, 2009, 01:45:59 am » |
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I have chosen to go with an Autocraft stage-and-a-half pump now..... got it on order waiting for a new batch to be made up. The suction plate off the sump does away with the stock strainer and pick up tube  . Just ordered Jack Sacchette's full flow extension adapter for the oiling system too- this seems like the right way to go for a race motor without an oil cooler. Doing some parts shopping whilst I am out here in CA enjoying the snow in and around Heavenly |
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No Compromise. O/FF111
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Bruce
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« Reply #34 on: February 26, 2009, 03:22:50 am » |
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My new as41 case doesn't have a small cut out for the nr1 cam bearing on both sides of the case. Should I make a cut out in the case of sand down the dual thrust bearing?
I cut the groove in the case so I don't have to deal with this the next time the engine's apart. IMO, the price of the parts is irrelevant. There's not much chance of screwing up the case by filing the groove. |
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Jonny Grigg
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« Reply #35 on: June 28, 2009, 22:17:09 pm » |
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A bit later than I originally intended, but am now starting the long process of the engine build for my race car. Tonight I began trial fitting the crank- it is a Revmaster flanged item with a T4 centre main. I have the Scat type 4-journal-into-type 1-case centre main conversion bearing. I appreciate it has to be thin and therefore has no dowel location, however I am concerned it will spin. Has anyone used these bearings successfully? It also appears I need to 'notch' the case as it has a tang similar to the cam bearing shells- i presume I need to do this and am not going to miss a trick. I also have stupid question number 2: with a shuffle-pinned case it appears I can't use the rubber o rings on the 6 main bearing studs. Is this the case? Thanks |
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No Compromise. O/FF111
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Zach Gomulka
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« Reply #36 on: June 28, 2009, 22:37:53 pm » |
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Great thread!!! I guess the intention behind the umbrella is to make sure that the oil filters trough the mesh screen and to work as a windage so the pickup does not suck air in sharp turns etc.
I have also wondered about itīs function when you donīt run the mesh screen and have a large sump with the oil level in the case much lower than in a stock engine.
Iīm thinking about cutting it away completely when my 2276 is being reassembled to help oil return. Any thoughts?
I was thinking the same thing... as long as you still have a support bracket, why do you need the rest of it on a deep sump motor with no screen?? |
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Born in the '80s, stuck in the '70s.
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richie
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« Reply #37 on: June 29, 2009, 08:28:39 am » |
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A bit later than I originally intended, but am now starting the long process of the engine build for my race car. Tonight I began trial fitting the crank- it is a Revmaster flanged item with a T4 centre main. I have the Scat type 4-journal-into-type 1-case centre main conversion bearing. I appreciate it has to be thin and therefore has no dowel location, however I am concerned it will spin. Has anyone used these bearings successfully? It also appears I need to 'notch' the case as it has a tang similar to the cam bearing shells- i presume I need to do this and am not going to miss a trick. I also have stupid question number 2: with a shuffle-pinned case it appears I can't use the rubber o rings on the 6 main bearing studs. Is this the case? Thanks Jonny,yes and yes, cutr a notch for the conversion bearing and yes you dont use the 6 oil rings on the main case studs if they are all dowelled cheers richie,uk |
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Cars are supposed to be driven, not just talked about!!! Good parts might be expensive but good advice is priceless |
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Shubee2 (DSK)
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« Reply #38 on: March 27, 2010, 04:14:23 am » |
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My new as41 case doesn't have a small cut out for the nr1 cam bearing on both sides of the case. Should I make a cut out in the case of sand down the dual thrust bearing?
File the tit on the one bearing |
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Der Selten Kafers VW Club.
Founding Member Est: 1976
58 Ragtop Old School Cal Look
66 Cal Look Drag Car
67 Resto Cal Look
67 Chevy II Nova L79
02 Camaro Vert!
04 Corvette Vert!
04 Colorado Pickup
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j-dub
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« Reply #39 on: June 22, 2010, 02:37:18 am » |
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Keeping an eye on this thread as I am currently building a 2276.  |
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Zach Gomulka
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« Reply #40 on: June 22, 2010, 04:33:17 am » |
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Keeping an eye on this thread as I am currently building a 2276. Happy belated birthday! Get that 2276 going! And alleys are not restrooms! |
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Born in the '80s, stuck in the '70s.
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SlingShot
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« Reply #41 on: June 26, 2010, 22:00:50 pm » |
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Keeping an eye on this thread as I am currently building a 2276. Happy belated birthday! Get that 2276 going! And alleys are not restrooms! Boardwalks aren't considered alleys  |
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Will Race For Beer !!!
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j-dub
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« Reply #42 on: June 29, 2010, 04:06:01 am » |
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Keeping an eye on this thread as I am currently building a 2276. Happy belated birthday! Get that 2276 going! And alleys are not restrooms! Boardwalks aren't considered alleys  |
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Zach Gomulka
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« Reply #43 on: July 01, 2010, 19:09:22 pm » |
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I took a sneek peek at your case yesterday, lookin good!
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Born in the '80s, stuck in the '70s.
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speedwell
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« Reply #44 on: July 01, 2010, 19:36:54 pm » |
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..
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« Last Edit: July 05, 2010, 17:36:54 pm by speedwell »
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Eric Ellis (57HotrodVW)
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« Reply #45 on: July 05, 2010, 15:05:45 pm » |
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I have chosen to go with an Autocraft stage-and-a-half pump now..... got it on order waiting for a new batch to be made up. The suction plate off the sump does away with the stock strainer and pick up tube... Did you get the pump yet? If so, how freely does it spin "out of the box"? Many of these pumps require a lot of prep work - mine was difficult to turn, even with a pair of pliers, and I understand that this is (or has been) sort of the norm...  |
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fredy66
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« Reply #46 on: March 27, 2011, 12:47:38 pm » |
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arabia slugs
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Type1/DVK
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« Reply #47 on: March 27, 2011, 13:52:33 pm » |
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vince panelvan has a nice blog with good engine info on it yes.
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DDD#8 - 14.74sec @ 1776cc - Member of: DVK ~ Der Vollgas Kreuzers - www.ultimatevw.nl - and racing engines |
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fredy66
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« Reply #48 on: March 28, 2011, 22:04:18 pm » |
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is this to allow the piston to move fare enough down ??  |
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arabia slugs
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Type1/DVK
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« Reply #49 on: March 28, 2011, 22:18:57 pm » |
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left hole, better breathing. Right notch is for stroker crank
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DDD#8 - 14.74sec @ 1776cc - Member of: DVK ~ Der Vollgas Kreuzers - www.ultimatevw.nl - and racing engines |
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fredy66
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« Reply #50 on: March 28, 2011, 22:49:03 pm » |
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so the notch on a 78.4 x 94 need to be bigger and deeper ??
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arabia slugs
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Zach Gomulka
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« Reply #51 on: March 28, 2011, 22:53:26 pm » |
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so the notch on a 78.4 x 94 need to be bigger and deeper ??
Depends on rod (type and journal size) |
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Born in the '80s, stuck in the '70s.
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fredy66
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« Reply #52 on: March 28, 2011, 23:11:29 pm » |
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5.4 VW journal
sorry I'm learning here
thanks for the help
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arabia slugs
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dangerous
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« Reply #53 on: July 14, 2011, 23:44:49 pm » |
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what is the original purpose of that "umbrella"?
The umbrella does quite a few things, but all purposes are intended to prevent air from being drawn in, instead of oil. Without it there, in a stock application, you can get the tornado effect like in a bath tub. The pump will draw a spiral of air, even when the pick up tube-end is covered with oil. (if the oil level becomes low enough.) It also prevents droplets of oil raining down and disturbing the oil around the pick up tube opening, which will do a similar thing of begining the draw of air. Yes it can restrict the return of oil to the bottom of the sump. In a perfect world, you would replace the umbrella down lower in a deep sump application, but without some serious work, you would never get the sump over it, unless you added it through the bottom on a CB Performance style large sump plate, and work around it to attach. or used a 36hp umbrella and did not use a screen as I have done in the past. |
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pupjoint
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« Reply #54 on: July 16, 2011, 18:11:03 pm » |
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so with a deep sump, would it be a good idea to be making holes on the umbrella or just leave it as is?
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dangerous
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« Reply #55 on: July 17, 2011, 20:49:15 pm » |
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so with a deep sump, would it be a good idea to be making holes on the umbrella or just leave it as is?
Opinions will vary, but I would only tamper/remove with the original umbrella if you are reaplacing it down below. You can always shamfer the case hole to help oil return. |
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