Thread: Rajicase's First Turbo Build, Ballin' On A (Nonexistent) Budget

  1. #3026
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    I used an ARP one over the winter, worked like butter. Well, it was my first time so I wasn't sure how easily it should slide in, my one piston felt like it caught a little bit compared to the others, so I pulled it out and re-did it, and got it on video:


  2. #3027
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    Quote Originally Posted by rajicase View Post
    So it's a good idea to lube up the rings and pistons and cylinder wall with some 5w30?
    Ya. Thats kind of an engine building 101 thing. Make sure and do plenty of research.

  3. #3028
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    don't overdo the lube. just a light smear on the rings is enough. You don't want the ring grooves to be full of oil.


    86 325es, 2.8L m50, S476sxe, ProEFI 128 ecu, e85, solid rear axle, TH400 trans, 28x10.5w slicks, zip ties, popsicle sticks, tape
    best time 9.06 @ 151.8 mph, best 60 foot 1.30

  4. #3029
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    Quote Originally Posted by jakermac View Post

    Ya. Thats kind of an engine building 101 thing. Make sure and do plenty of research.
    I'm doing my research in phases. Too much info all at once does me no good.
    I am still on the installing bearings/crankshaft and checking clearances so that's where my attention is at the moment.

    Once I get that done I'll do more research on gapping rings and installing pistons.

    I've never done this before so it's learn as I go.

  5. #3030
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    Okay so JE says min. ring gap for top and bottom oil rings is 0.015" .. my oil rings gap is exactly 0.015". Should I open it up a bit or leave it?

  6. #3031
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    Quote Originally Posted by rajicase View Post
    Okay so JE says min. ring gap for top and bottom oil rings is 0.015" .. my oil rings gap is exactly 0.015". Should I open it up a bit or leave it?
    Leave it I guess. Mine were a little tighter, and I went to like 0.016-17 those are a little tougher to file. They are different. The previous engine had oil gaps at .023 and took a qt per thousand iirc the PO stated. I have zero consumption now .
    Last edited by Butters Stoch; 05-31-2017 at 05:11 PM.
    1996 332IS
    Built 3.2
    CES/Steed TS Precision 6466, spraying a "$π!℅" load of meth.
    Technique Tuning 80# tune.
    1/4 mile 10.84 @ 136.72
    Your 1 and only stop for all your BMW performance needs
    WWW.CESMOTORSPORT.COM

  7. #3032
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    leave it. The oil rings don't get much heat so don't need as much gap.


    86 325es, 2.8L m50, S476sxe, ProEFI 128 ecu, e85, solid rear axle, TH400 trans, 28x10.5w slicks, zip ties, popsicle sticks, tape
    best time 9.06 @ 151.8 mph, best 60 foot 1.30

  8. #3033
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    Quote Originally Posted by someguy2800 View Post
    leave it. The oil rings don't get much heat so don't need as much gap.
    Good to hear. Ima go ahead and gap my rings tomorrow hopefully since my bearings don't get here till friday.

  9. #3034
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    Little problem.
    Went to gap the rings and out of the box the top ring is gapped to 0.024" and the 2nd ring has a gap of 0.031"

    Little confused here. I ordered the correct ring set for these pistons so not really sure what's up.

  10. #3035
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    Check the part numbers on what you received against what you ordered.
    always trying to make it lighter and faster

    ^^former build: http://www.bimmerforums.com/forum/sh...-neglected-M3/
    current build: http://forums.pelicanparts.com/porsc...car-build.html
    instant grams: doktor_b

  11. #3036
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    Quote Originally Posted by rajicase View Post
    Little problem.
    Went to gap the rings and out of the box the top ring is gapped to 0.024" and the 2nd ring has a gap of 0.031"

    Little confused here. I ordered the correct ring set for these pistons so not really sure what's up.
    Post a pic of where in the bore your checking the gaps
    1996 332IS
    Built 3.2
    CES/Steed TS Precision 6466, spraying a "$π!℅" load of meth.
    Technique Tuning 80# tune.
    1/4 mile 10.84 @ 136.72
    Your 1 and only stop for all your BMW performance needs
    WWW.CESMOTORSPORT.COM

  12. #3037
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    Quote Originally Posted by Butters Stoch View Post

    Post a pic of where in the bore your checking the gaps
    I am using an old piston with the 2nd ring on it as a stop to push the rings down. Ring is at least 1" in the cylinder.

  13. #3038
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    Wow unfuckingbelievable.
    The 6th cylinder is just bored out significantly more than the other 5. Jesus fucking christ. My block is ruined and $300 down the drain.

  14. #3039
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    Quote Originally Posted by rajicase View Post
    Wow unfuckingbelievable.
    The 6th cylinder is just bored out significantly more than the other 5. Jesus fucking christ. My block is ruined and $300 down the drain.
    Who did the machine work?

    Sent from my SM-G920V using Tapatalk
    '93 325is: ZF swap, Borla Type X muffler, cat delete, X Pipe, Tune, Powerflex bushings (subframe, diff, RTAB, LCAB), Apex ARC8's, Raceland Ultimos, Corbeau seat, Renown steering wheel, M3 front and rear bumpers, BMW motorsports moulding, Euro tails, Depo headlights (soon to be retrofitted)




  15. #3040
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    Quote Originally Posted by tyr283 View Post
    Who did the machine work?
    GG///M3, .....it was free shipping.

    Did you give the pistons to the machine shop that punched it out ? They should be boring and honing to fit pistons. Not "XXmm"
    1996 332IS
    Built 3.2
    CES/Steed TS Precision 6466, spraying a "$π!℅" load of meth.
    Technique Tuning 80# tune.
    1/4 mile 10.84 @ 136.72
    Your 1 and only stop for all your BMW performance needs
    WWW.CESMOTORSPORT.COM

  16. #3041
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    Quote Originally Posted by Butters Stoch View Post

    GG///M3, .....it was free shipping.

    Did you give the pistons to the machine shop that punched it out ? They should be boring and honing to fit pistons. Not "XXmm"
    Yes of course I brought them the pistons.
    The 6th cylinder is just significantly larger than the other 5.

  17. #3042
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    Quote Originally Posted by tyr283 View Post
    Who did the machine work?

    Sent from my SM-G920V using Tapatalk
    PM me

  18. #3043
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    So I brought the block to the machine shop and the owner immediately acknowledged that they messed up and the bore was too big.

    He said they will put a thin walled chromoly sleeve in it and should be good as new. My research indicates this is true as long as it's installed correctly.

    I'm optimistic they are doing the right thing, I have been bringing all my heads to these guys for years and the always do excellent work and are very quick. So hopefully this works out well.

  19. #3044
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    Excellent update.
    sleeving a block is old tech. Should be just fine.
    always trying to make it lighter and faster

    ^^former build: http://www.bimmerforums.com/forum/sh...-neglected-M3/
    current build: http://forums.pelicanparts.com/porsc...car-build.html
    instant grams: doktor_b

  20. #3045
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    Concerning that they gave you the block knowing it was overpunched. Sh!t happens, but be up front about it. I'd get details on the sleeving and check tolerances before they press it in. Maybe have some more knowledgeable guys on here double check what they plan to do.
    98 540i 6, 525 whp, 120 mph 1/4, V3 Si S/C'er @16 psi, W/A I/C, Water/Meth, Supersprint Headers, HJS Cats, 3" Custom Exhaust, UUC Twin Disc, Wavetrac LSD, GC Coil Overs, Monoball TA, AEM FP, Aeromotive FPR, AEM Failsafe AFR/Boost, Style 65's w/275's, M5 Steering Box, Eibach Sways, M3 Shifter, Evans Coolant, 85 Deg Stat, PWM Fan, 10" Subs, B.A. speakers, Grom Aux/BT, Still Rolling as my DD!

  21. #3046
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    Was this the shop you recommended to me? They did great work on my cylinder head.

  22. #3047
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    Quote Originally Posted by rajicase View Post
    So I brought the block to the machine shop and the owner immediately acknowledged that they messed up and the bore was too big.

    He said they will put a thin walled chromoly sleeve in it and should be good as new. My research indicates this is true as long as it's installed correctly.

    I'm optimistic they are doing the right thing, I have been bringing all my heads to these guys for years and the always do excellent work and are very quick. So hopefully this works out well.
    I personally would get them to buy you a new/other block and properly size the holes this time.

    Sleeves can add another point of failure (they can sink).

  23. #3048
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    Quote Originally Posted by NOTORIOUS VR View Post

    I personally would get them to buy you a new/other block and properly size the holes this time.

    Sleeves can add another point of failure (they can sink).
    That would be ideal but this is what they are willing to do so I'm gonna have to live with it.

    Theoretically sleeves should be perfectly fine as long as they are installed properly.
    Fingers crossed. ..

  24. #3049
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    A member here had a VERY expensive engine put together by "XxxxxxxxXxxxxxxxx", fully built to the hill. Top of the line everything. Arrow rods, CP pistons......the works.
    He installed it and all was good for 500-1000 miles of no boost. To break it in. Then once going into boost, he noticed his coolant was blowing out the cap. System was pressurizing.
    This was with a cut ring gasket, I couldn't believe the gasket failed, no way. So we installed a pressure gauge in the line from the bottom of the bottle to the engine. The one that runs along the drivers side. Well, he was hitting around 30psi pressure in the cooling system. So, off came the head and what we found was disturbing. The 5 digit engine that he purchased was sleeved on 1 cylinder, and the sleeve dropped. The kicker is, he bought the engine 8 years ago, and it sat all wrapped up in a crate till it was installed.

    Shit part is, he bought the engine under the impression it was a good block punched out. They never told him it was sleeved. He didn't provide a block. He bought it all. Then when this was caught years later with only a few hundred miles, that " xxxx " is no longer in business. Many will know who "xxxx" is.
    My "solution" would have been a baseball bat to his head, then suck him off while he is knocked out.
    That would teach him not to rape.
    Last edited by Butters Stoch; 06-02-2017 at 12:19 PM.
    1996 332IS
    Built 3.2
    CES/Steed TS Precision 6466, spraying a "$π!℅" load of meth.
    Technique Tuning 80# tune.
    1/4 mile 10.84 @ 136.72
    Your 1 and only stop for all your BMW performance needs
    WWW.CESMOTORSPORT.COM

  25. #3050
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    Quote Originally Posted by Butters Stoch View Post
    A member here had a VERY expensive engine put together by "XxxxxxxxXxxxxxxxx", fully built to the hill. Top of the line everything. Arrow rods, CP pistons......the works.
    He installed it and all was good for 500-1000 miles of no boost. To break it in. Then once going into boost, he noticed his coolant was blowing out the cap. System was pressurizing.
    This was with a cut ring gasket, I couldn't believe the gasket failed, no way. So we installed a pressure gauge in the line from the bottom of the bottle to the engine. The one that runs along the drivers side. Well, he was hitting around 30psi pressure in the cooling system. So, off came the head and what we found was disturbing. The 5 digit engine that he purchased was sleeved on 1 cylinder, and the sleeve dropped. The kicker is, he bought the engine 8 years ago, and it sat all wrapped up in a crate till it was installed.
    I mean sleeves have been run in engines for a long time from production cars to big power race cars. I don't like the fact that my block is going to have a sleeve but if it's installed correctly it shouldn't be a problem?

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