+ Reply to Thread
Page 4 of 29 FirstFirst 1234567814 ... LastLast
Results 31 to 40 of 285

Thread: Ways to cure 7M oiling issues

  1. #31
    Drafting, not tailgating
    bwest's Avatar
    Join Date
    May 2005
    Location
    HippieTown, CA
    Posts
    546

    Default Re: ways to cure 7m oiling issues.

    Greg (or anyone else that has done this) is there a reason you went with a braided line on the pump output vs having a hardline made up using a threaded pipe fitting? I have some concerns over the hardening of the rubber over time being submerged in oil (both in and out) and cracking, leaking, etc; leading to a loss of pressure and then the motor.

    Thoughts? or do you not anticipate the motor lasting long enough for that to be a problem...
    Last edited by bwest; December 20th, 2006 at 01:08 PM.

  2. #32
    90T
    3p141592654's Avatar
    Join Date
    Oct 2005
    Location
    Thousand Oaks, CA
    Posts
    3,074

    Default Re: ways to cure 7m oiling issues.

    I would think a semi-rigid hardline with swagelok fittings would be better (but more expensive).

    http://www.swagelok.com

  3. #33
    Junior Member
    tig321's Avatar
    Join Date
    Mar 2006
    Location
    Edmonton/Victoria
    Posts
    151

    Default Re: ways to cure 7m oiling issues.

    Quote Originally Posted by 3p141592654
    I would think a semi-rigid hardline with swagelok fittings would be better (but more expensive).

    http://www.swagelok.com
    That thought crossed my mind also. They are not cheap, but not really a huge price difference compared to AN fittings I geuss.
    What do you mean by "semi" rigid?


    http://www.swagelok.com/search/produ...art=SS-810-5-8
    SS Swagelok Tube Fitting, 45 Male Elbow, 1/2 in. Tube OD x 1/2 in. Male NPT
    Unit Price : 40.70
    Availability : Call for Availability
    http://www.swagelok.com/search/produ...part=M-810-2-8
    Swagelok Tube Fitting, Male Elbow, 1/2 in. Tube OD x 1/2 in. Male NPT
    Price: USD 34.50
    Availability: Call for Availability

    an fittings for $ comparison
    http://store.summitracing.com/partde...5&autoview=sku
    http://store.summitracing.com/partde...5&autoview=sku
    Great writeup btw. Very good info in here. I'm glad to finally find pics of the group A ban baffling.

  4. #34
    Drafting, not tailgating
    bwest's Avatar
    Join Date
    May 2005
    Location
    HippieTown, CA
    Posts
    546

    Default Re: ways to cure 7m oiling issues.

    There is a swagelok distributer over in Sunnyvale that I'll try to check out next week. I'll see if they have something that makes 'sense' to use.

    I'm going to look into having a hard line made up with a pipe fitting on the pump end and then change the output on the pump (similar to what Greg did). Personally, a hard line vs a hose makes me feel a bit more comfortable. If I was pulling the pan on a regular basis, that would be different, but since I'm not, I would rather not worry at all.

  5. #35
    Phase Two
    supra87t/t4's Avatar
    Join Date
    Apr 2005
    Location
    MPLS, MN
    Posts
    219

    Default Re: ways to cure 7m oiling issues.

    Great thread!

    Couple comments

    " wether you are using the 5m or 7m pump, there is a clearance from the gears, to the lower case. there is a minimum and maximum tolerance. what you need to do is measure that, and then have the cover machined at the machine shop to put this as close to the minimum clearance as posible"

    Machining the cover won't reduce the clearance as the cover is "flat". you would have to machine the pump body itself. Odds are you'd be better off replacing an out of spec pump than trying to "fix" it.

    "the pressure releif spring wears as well...this is a linear spring, so it does open before max presure is realized...it starts being compressed the moment any pressure is applied and is fully open by the max oil pressure"

    I don't agree that the springs (pump relief and squirters) are "wearing" they may relax some with age, but it's not hard to design a spring to perform the same over a long long time if done right. I doub't you'd see much difference between an new and used spring, if you do the designer should be fired. Also, the spring doesn't open immediately, the reson why is that it is preloaded. The same thing adding shims does. It increases the cracking pressure. The free length of the spring is longer than the length when it is installed so it has some static force on it keeping the ball forced closed. You have to have enough pressure to overcome that force before the valve will open at all. Good call on the squirter springs though, I've seen a few with metal shavings stuck in the springs (machinist must not have removed them before flushing the galley) at least inspect them carefully.


    I'd be nervous about the stainless hose in the oilpan. You have to make sure that braided lines aren't touching anything or they will wear right into it. As for the swagelock stuff there's no reason to get that fancy, if you want hardlines just use an AN tube nut and flare the tubing. Hhmm, that would be a pretty nice product if you got a batch CNC bent and put all the fittings together as a kit.

    Glen

  6. #36
    I am the Super Devil
    Mr.PFloyd's Avatar
    Join Date
    Jun 2005
    Location
    Mississauga, Ontario
    Posts
    3,968

    Default Re: ways to cure 7m oiling issues.

    why isn't this stickied yet?

  7. #37

    Default Re: ways to cure 7m oiling issues.

    any one know where I could buy a copy of Group A magnesium oil pan?
    I didn't want make a new topic so I've posted in this one
    Stop russian Terrorists! Georgian people, Lithuania is with you!
    '90 Toyota Supra 7M-GTE
    '06 Toyota Aygo TTE (52mpg FTW)
    '65 Porsche 911

    HorsePowerAddict Motorsports
    Quote Originally Posted by Poodles View Post
    Porsches are always trying to kill you. Go sideways, the ass goes first, and you go flying ass first into the ditch. One of the reasons watching them being pushed hard is so entertaining as the driver HAS to be skilled or he's dead...

  8. #38
    475rwhp459torq an climbin
    QWIKSTRIKE's Avatar
    Join Date
    Apr 2005
    Location
    Some where out there
    Posts
    1,169

    Default Re: ways to cure 7m oiling issues.

    Quote Originally Posted by drjonez
    arnout over in the netherlands makes a girdle and a windage tray IIRC....if a scraper isn't your thing.

    IMNSHO the #1 fix is the stupid oil filter mount....next to a properly rebuilt engine, of course.

    I concur with the good DR

  9. #39
    475rwhp459torq an climbin
    QWIKSTRIKE's Avatar
    Join Date
    Apr 2005
    Location
    Some where out there
    Posts
    1,169

    Default Re: ways to cure 7m oiling issues.

    Quote Originally Posted by supra87t/t4
    Great thread!

    Couple comments

    " wether you are using the 5m or 7m pump, there is a clearance from the gears, to the lower case. there is a minimum and maximum tolerance. what you need to do is measure that, and then have the cover machined at the machine shop to put this as close to the minimum clearance as posible"

    Machining the cover won't reduce the clearance as the cover is "flat". you would have to machine the pump body itself. Odds are you'd be better off replacing an out of spec pump than trying to "fix" it.

    "the pressure releif spring wears as well...this is a linear spring, so it does open before max presure is realized...it starts being compressed the moment any pressure is applied and is fully open by the max oil pressure"

    I don't agree that the springs (pump relief and squirters) are "wearing" they may relax some with age, but it's not hard to design a spring to perform the same over a long long time if done right. I doub't you'd see much difference between an new and used spring, if you do the designer should be fired. Also, the spring doesn't open immediately, the reson why is that it is preloaded. The same thing adding shims does. It increases the cracking pressure. The free length of the spring is longer than the length when it is installed so it has some static force on it keeping the ball forced closed. You have to have enough pressure to overcome that force before the valve will open at all. Good call on the squirter springs though, I've seen a few with metal shavings stuck in the springs (machinist must not have removed them before flushing the galley) at least inspect them carefully.


    I'd be nervous about the stainless hose in the oilpan. You have to make sure that braided lines aren't touching anything or they will wear right into it. As for the swagelock stuff there's no reason to get that fancy, if you want hardlines just use an AN tube nut and flare the tubing. Hhmm, that would be a pretty nice product if you got a batch CNC bent and put all the fittings together as a kit.

    Glen
    I agree Glen...This IMHO is just an itch for issues that need not be addressed if a larger pipe can be made. Go to an aeroquip shop...they have made me hard pipes like this for my new turbo

  10. #40
    Supramania Regular
    williamb82's Avatar
    Join Date
    Apr 2005
    Location
    Tampa, Fl.
    Posts
    879

    Default Re: ways to cure 7m oiling issues.

    anyone found out the thread needed on the 7m block yet where the oil enters from the oil pump? i have a 7m block torn down now and dont want to take the whole thing tot he hydralic line shop to get the right fittings. lol. i figure someone may have found this out already. if not ill be sure to post it when i find out.
    http://www.cardomain.com/ride/2042690/1 black 84 mk2 7mgte, ms2, truetrac lsd, bbk, etc.... gt4082, ffi, t56, tilton tripple, etc... in the works.

    http://www.cardomain.com/ride/2117186/1 blue 85 mk2 trd header, hks exhaust, custom intake pipe, cone filter, my beater for now.

    http://www.cardomain.com/ride/2965297
    black 86 mk2 bone stock with rod knock. wicked setup in the works.

+ Reply to Thread
Page 4 of 29 FirstFirst 1234567814 ... LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Links monetized by VigLink