Author Topic: What are these odd looking things?  (Read 16950 times)

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Online dsrace

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Re: What are these odd looking things?
« Reply #75 on: April 18, 2021, 08:08:52 AM »
Are any of you with BB turbos using a filter on the oil supply line? Only during engine break-in? Always? If so, what micron?

couldn't hurt. my engine was broke in long before so i never even thought about it.
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Online fabr

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Re: What are these odd looking things?
« Reply #76 on: April 18, 2021, 09:26:00 AM »
no,I don't see any reason to do so. The engine oil is already filtered. Maybe I'm wrong ?
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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Online fabr

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Re: What are these odd looking things?
« Reply #77 on: April 18, 2021, 09:35:49 AM »
Almost all debris from break in is from the cylinder walls that are honed and cleaned using old school methods. With todays machining and honing procedures and attention to proper cleaning coupled with the much better quality of castings of engines the last 20 or more years there is very little trash generated during break in. Almost all debris will still be from the cylinder walls during break in but the procedures used to hone today avoids the vast majority.
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

Offline BrianN

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Re: What are these odd looking things?
« Reply #78 on: April 18, 2021, 12:32:05 PM »
Thanks ya'all.  I have read pros and cons of both situations.  My oil supply is shortly after the engine oil filter,  it appears. I also plan to, and welded fittings, to return the turbo coolant line into the return to radiator, after my coolant temp sensors. I didn't know if the engine coolant would actually be hotter after going through the turbo, and didn't want to get false temp readings. Does that make sense?

Online fabr

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Re: What are these odd looking things?
« Reply #79 on: April 18, 2021, 01:11:12 PM »
makes sense to me .
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

Online fabr

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Re: What are these odd looking things?
« Reply #80 on: April 18, 2021, 01:19:02 PM »
Something to consider is that most oil filters are bypass style and the actual amount of oil filtered may be as low as 10% as most of the oil is bypassed the filter media. Oil ,like electricity ,follows the path of least resistance. The least resistance is through the bypass valve as it opens around 20 psi or so on most filters.

 So,the question always arises is why have the bypass valve? Mostly for cold oil reasons. cold oil doesn't like flowing through the filter media and there is the possibility of oil starvation in the engine with a full flow/non bypass filter. Would a non bypass filter be better? Probably but only if there is almost no pressure drop at any rpm. I run big ass bypass filters.
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

Offline BrianN

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Re: What are these odd looking things?
« Reply #81 on: April 18, 2021, 01:35:17 PM »
That is good info to know, which I hadn't considered.  I do know my Suby oil pump has a bypass/recirculation valve in it, but that is a different situation.  I may still use a pre-turbo oil filter, but it will have to be easy to check, often. But also, we as duners, don't use the 3000 mile rule between oil changes. If so, I could go many years between changes!! Thanks.

Online fabr

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Re: What are these odd looking things?
« Reply #82 on: April 18, 2021, 06:59:36 PM »
[FWIW,I would not use a separate filter for the turbo.
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

Online fabr

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Re: What are these odd looking things?
« Reply #83 on: April 18, 2021, 07:05:40 PM »
The bypass in the pump is to limit engine oil pressure only. The filter bypass is to allow oil to flow in the engine when oil is flow limited by the filter in cold weather or with thick oils in general to prevent oil starvation and ultimately engine destruction.
"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"


Offline jersdunz

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Re: What are these odd looking things?
« Reply #85 on: April 19, 2021, 10:24:52 AM »
Really quite sad i missed this thread a month ago.. Hi guys!! I'm jealous beyond description, of your ability to close your own decks!! do you have a cnc?
Tell me you didn't do that manually!! My understanding of subarus "Dual cams" is that you don't need a closed deck until you reach 500 wheel, This engine you built is probably capable of that easily. She will live a long time with this little turbo..

I threw a crapload of money in the SUBI direction in 2016, and I still haven't heard it Fire yet...  5:





Offline BrianN

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Re: What are these odd looking things?
« Reply #86 on: April 19, 2021, 09:28:43 PM »
Yes, I am very lucky to have full access to our machine shop. The hard part of machining the cases and inserts was the programming. We do not have cam software yet. I have had a few delays in the whole build process. I am a rookie at this! I have received a LOT of help and advice. They know who they are!! What is your engine going in?

Offline jersdunz

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Re: What are these odd looking things?
« Reply #87 on: April 20, 2021, 08:38:10 AM »
I just ordered a link g4x engine controller, next is the 6 speed then she's going in
But getting all that done while maintaining the buggy is a challenge.


Offline BrianN

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Re: What are these odd looking things?
« Reply #88 on: April 20, 2021, 04:16:26 PM »
I watched a few videos from your YouTube link. Looks like you have some nice stuff. And skills!

Online dsrace

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Re: What are these odd looking things?
« Reply #89 on: April 21, 2021, 06:04:40 AM »
hell i thought you were driving that suby jersduz!  brianN does do some nice work.
Don't never argue with an Idiot!
Because he will drag you down to his level and beat you with experience

 

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