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#3
December 26th 2011, 23:47
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Low Budget
Hi, I some time ago, called low budget. They himmed and hawed around about answering the question on the type IV main beraing. Maybe stock, but way down the road for custom sizes. I believe my case is 20 over. In my heart of heart, I feel that bronze bearing is the way to go. Man pople continue to not want to get the type IV up and runnig. I do like the Subie, but a 3 liter turbo bug is my main quest. Jorge at EMS also stated that they were working on a type IV bronze bearing, but again stock first, bummer
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#4
December 27th 2011, 17:52
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Well if George at EMS can make the bronze bearings in standard i will be glad as my case is standard. Also i was on the ultimateaircooled forums when Low bugget said they were going to make some and Dominic said he had some made when he was drag racing and that they were the best bearing he has ever had.
God i do hope someone makes some because i would really love some good bearings to use.
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#5
December 27th 2011, 23:29
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I hear you
Quote:
 and I'll do the same
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#7
January 24th 2012, 20:24
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I have 3 engines to build a t1 2ltr something a t4 2056cc or 2316 maybe a 2.7ltr then finally a 2.1ltr waterboxer. These guys need to get off their asses and do what they are doing who
cares what the other is doing, we need quality bearings.
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#8
January 25th 2012, 23:06
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Quote:
I would like to have bronze bearings. I had to have the main bearing modded due to the oil squirters. Since the oil squirter are not standard on the type IV main bearings, the machinst kind of bucthed the main bearings creating the offset hole.
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#9
January 27th 2012, 04:39
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Hi effvee
So that it's clear, EMW is having only the thrust bearings made in bronze, not complete sets. And I believe Engine Plus carries the 356 style lifters for the Type lV...
__________________
Richard
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#11
January 28th 2012, 00:51
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Quote:
But you have to be careful now, the I think it's Mahle bearings that have been coming out for the Type lV are no longer steel back center mains. It's not only the correct crush, but the materials expansion rates, a bronze thrust bearing was made and the wrong combination of materials were used and the bearing expanded too much and sized on the crank. So it's a matter of finding the right combination of materials to get the correct expansion rate. For example valve guides are made of bronze, actually silicon bronze.
__________________
Richard
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#12
January 28th 2012, 00:10
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Quote:
) no one seems to have them in the states. I hope you have not forgot me and Engine Plus . I have a machinst friend that will try and make me a complete set. I have a stock .020 over set in regular meterial. What I need is a good choice in Bonze alloy. I was looking for Beryillum, but I have learned that is copper. Richard, do you know of any Bonze that will make a good set of bearings?   My machinst made these for me with ease on a regular lath. If I can get my hands on a good set of 356 lifters can your guy laser them for me? Stay in touch, good to hear from you.
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#13
January 28th 2012, 01:41
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Quote:
 As to the Beryllium Copper that is used for valve seats for Titanium valves, it's like around 80% copper with something like 3% Beryllium and 17% of other materials for example to hold the materials together. My friend no longer works at the EDM shop, he has moved back to Germany. And lasers were not used, it was an electrical charge (Electrical Discharge Machining) on little tiny copper rods or wire. As to the 356 style lifters, I recommend you pass on those for your Turbo build, the spring pressure needed for boost I think is to much for those lifters. I recommend you have your bronze lifter bushings machined out to Type 1 lifter diameter and run Tool Steel Type 1 lifters, they will handle the spring pressure and Turbo Spool far better than the 356 style lifters. There are a number of people who carry them. I liked your cyl's, except for the stud pattern. And your going to need to mock those up on your motor, and I am talking about the crank installed at least one rod per side to determine how much they will have to be shortened to set your deck, due to they need to be machined before you have them plated.
__________________
Richard
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#15
April 8th 2012, 10:33
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Hey Francelle, good to see your making progress on your motor.I agree with Richard on the lifters.Light lifters are an advantage,yes. If you insist on running the 356 lifters with turbo you will have to re-think some things.Titanium valves to reduce weight and therefore spring pressure.But how will it hold up in the long run? In your 103x88 (iirc) application you are forced to run a cam with a 1" or smaller base circle which makes the ramps steeper and harder on the valvetrain,more spring pressure is required to keep the lifter on the cam.That's one reason why I gave up on the 3 Liter turbo project and switched to a 2320cc 102x71.If I ever do decide on more power than the stock crank and rods can cope with I will just go with the same size crank but in billet from Moldex and Pauter rods.All of which is unlikely to happen...
Next question is: why do you want so much oil pressure? What do you expect to gain from it? I would concentrate more on cooling.60-70psi is plenty. What main bearing size do you need? Std?
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