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gsx-f__k

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Posts posted by gsx-f__k

    Mikuni throttle plates / butterflies?

    in Oil Cooled

    Posted · Edited by gsx-f__k

    This is oilcooled Suzuki related thing, I have turbo GSXR with EFI.

    I'm in bad situation with 1 throttle plate and I'd need to find replacement part.

    TB's are from GSXR600 K1-K3 and have 38mm diameter and #100 stamped plates.

    As I understood on web #100 means angle on the edge, right?

    If (and I mean IF) BST38SS would have 38mm plates with #100 stamped on them, would they be same? BST36SS have #100 stamped on them too.

    Edit: I found BST38SS carb bodys at eblag and they have #135 plates :(

    Turbo or Supercharger ?

    in Forced Induction

    Posted

    On 2/17/2020 at 3:43 PM, Gpz1100_Convert said:

    I seriously doubt it. hippy is more if a 'give me a hammer and a bastard file' kinda chap. I do believe he removed the system actually as he was building something new. May well be for sale

    Mark

    I'd really like to be first in line if he's selling those parts. Can you ask if he still has needed parts? I'll just basically need cover and maybe extension axle to crank.

    Jouni

    will a B12 engine go in a 1100 W Frame?

    in Water Cooled, V-Twins, Singles and 2-strokes

    Posted · Edited by gsx-f__k

    On 6/29/2016 at 9:31 PM, spondonturbo said:

    If I go this route I will do. Could be a while..................

     

    On 2/10/2020 at 9:29 AM, TWISTON said:

    Great info folks, I shall start asap. Im waiting for bits for the SV hillclimb build so will crack on with this.Try and put up pics too. Although I am shite with technology,  unless it's a lathe, milling machine or welder. 

    Let the fetttling commence!

    I have a 95W 750 frame and B12 engine waiting for this operation. Rear mounts have to be reallocated somehow as far as I can remember, it's been a while I've looked into this.

    I've cut off rear mounts off frame and bottom cases are sitting in frame at the moment, I'll get pics when I'll get to bike.

    Let's make water boiler great again:D (sorry if this insults some people somehow, I'm finnish and just thought it's hilarious)

    engine numbers ?

    in Oil Cooled

    Posted · Edited by gsx-f__k

    4 hours ago, fatblokeonbandit said:

    v = 1100 to 1199 cc

    7 = 4 stroke 4 cylinder

    15 = the 15th incarnation of that model, ie the 1127 engine.:tu

    So, how do you know or how to determine what donor model engine I have, frame is 88 and heavily modified (incl. turbo)?

    About 1127/1157 cylinder heads.

    in Oil Cooled

    Posted

    On 1/20/2020 at 12:23 AM, Gixer1460 said:

    Can't see you gaining (loosing width between individual TB's) as you'll still need adjustment mechanisms between so sounds like a lot of aggro for no big gain seeing as the plenum isn't exactly 'off the shelf' anyway?

    I think I was unclear, I meant close to head as possible. My TB's are not separable.

    About 1127/1157 cylinder heads.

    in Oil Cooled

    Posted · Edited by gsx-f__k_UH13

    On 1/15/2020 at 6:53 PM, SiBag said:

    As far as I know they are all the same for the port spacing.

    But I'm sure an adult will be along to confirm this. O.o

    Thank you!

    On 1/15/2020 at 8:19 PM, fatblokeonbandit said:

    Ain't no adults round hereO.o

    but yes same spacing :tu

    Thank you!

    On 1/15/2020 at 9:21 PM, Gixer1460 said:

    Query - why make 'custom' boots if GSXR 40mm boots are available? If to accommodate bigger TB's, I would hope you've done a LOT of headwork on a B12 casting as it's not the best flowing example in the family - that prize goes to the GSXR1100 'M & N' variants which also used the 40mm carbs! Personally I have 46mm bore TB's tapered and fitted to 40mm rubbers, an 'M' head, ported, valves and cams to suit . . . . . . the turbo helps as well!

    I'm trying to get TB's close to head as possible to make more room for plenum and TB's are 40mm.

    About 1127/1157 cylinder heads.

    in Oil Cooled

    Posted

    Hi,

    I could not find info about cylinder heads with google or OSS search.

    I'd need to know if all 1127/1157 cylinder heads share same intake ports spacing or not? Is there some other differences regardless of intake port diameter?

    I'll be making new intake boots for throttle bodies and I've got a 1997 B12 cylinder head to use as a jig, cylinder head to put these custom intake boots is most likely 91 or 92 GSXR 1127 with 40mm carbs (BST40) and 13101-41C00,13102-41C00,13103-41C00,13104-41C00 boots.

    748cc to 1004cc with 749cc crank?

    in Oil Cooled

    Posted

    11 hours ago, Oilyspanner said:

    Are you going with liners and big pistons - 884/907 ? - they're good motors when done well.

    I got a 91 long stroke bottom and short stroke top is being bored to accept B12 sleeves and will be bored 81mm to accept gen2 busa pistons.

    I have a question:

    Actual dimensions of crankshaft and rod bearings ID/OD and bearing type?

    Green :

    Black :

    Brown :

    Yellow: 

    Why I'm asking is, I'd get new ones directly from bearing supplier to save some money, for example clutch axle bearing: Suzuki part 49€ vs. supplier 6.82€.

    748cc to 1004cc with 749cc crank?

    in Oil Cooled

    Posted · Edited by gsx-f__k_UH13

    3 hours ago, Oilyspannerlyspanner said:

    Pretty certain that the short stroke engines - GSXR750J/K and up to '99 GSX750Fs had the same size mains as the 1100s - 36mm. The long stroke 750s had smaller sized mains, the small end is smaller too as you've noticed. You can put an 1100 crank in the short stroke 750 cases (don't know how the primary drive/clutch works out, change to suit I guess), but you can't drop the long stroke 750 crank assembly into the short stroke cases obviously.
    My Haynes manual has all 750Rs lumped together for mains sizes, this isn't right - especially as it's got the GSX750F listed as 36mmmains, like the 1100s, this is correct. The short stroke engine was designed to rev hard, so Suzuki upped the big/small end sizes to cope.

    So, after all it seems i have at least one more problem..

    Feels silly to even ask, but could this be sorted out just with playing with bearings?

    748cc to 1004cc with 749cc crank?

    in Oil Cooled

    Posted

    5 hours ago, cregnybaa said:

    Long stroke mains are 33mm, short stroke mains are 34mm if I remember correctly, 1100 crank will go into short stroke cases I have done it.

    http://oldskoolsuzuki.info/archives/404

    3. A 750R-88/89 top end on a 750R 90/91 bottom end (or 86-87 bottom).
    This is a bit more difficult, since it needs some more work and imagination then the plain
    assembling of a B6/750.
    The 750R-88/89 have a bigger bore, so the idea of this combo is to increase the capacity of the
    engine.

    (You could also take this combo the ‘other way around’, and fit a 90/91 crankshaft + clutch in a 88/89 engine.)
     

    Since the dimensions of the heads are not the same, it is not possible to only put the 88/89 pistons+cylinders on the 90/91; the head of the 90/91 would not fit the cylinder block.

    So the complete 88/89 top has to be installed on the 90/91. The wrist pins on the 90/91 are 18mm, on the 88/89 20mm,
    so the small end of the 90/91 rods have to be bored to 20mm.

    Now the whole thing could mechanically be assembled, but since the stroke of the 88/89 is smaller, the height of the cylinder block is smaller.
    This has to be compensated by putting a spacer under the cylinderblock. (This spacer would very roughly have to be 1/2 x the difference in stroke, but the only right way is to measure/calculate the
    compression.

    I took this from service manual:

    GSX750R

    Crankshaft and bearings

    Main bearing oil clearance
    Standard 0.020 to 0.044 mm (0.0008 to 0.0017 inch)
    Maximum 0.080 mm (0.0031 inch)

    Main bearing journal diameter 31.976 to 32.000 mm (1.2589 to 1.2598 inch)

    Crankshaft thrust clearance
    1985 through 1987
    Standard 0.04 to 0.18 mm (0.002 to 0.007 inch)
    Maximum 0.25 mm (0.010 inch)
    1988 and 1989 0.05 to 0.13 mm (0.002 to 0.005 inch)
    1990 on 0.055 to 0.110 mm (0.0022 to 0.0043 inch)

    Right thrust bearing thickness
    1986 and 1987, 1990 on 2.425 to 2.450 mm (0.0954 to 0.0964 inch)
    1988 and 1989 2.42 to 2.44 mm (0.095 to 0.096 inch)

    Connecting rod side clearance
    Standard 0.010 to 0.020 mm (0.004 to 0.008 inch)
    Maximum 0.030 mm (0.012 inch)

    Connecting rod big end thickness 20.95 to 21.00 mm (0.825 to 0.827 inch)
    Crankpin width 21.10 to 21.15 mm (0.831 to 0.833 inch)

    Connecting rod bearing oil clearance
    Standard 0.032 to 0.056 mm (0.0013 to 0.0022 inch)
    Maximum 0.080 mm (0.0031 inch)

    Connecting rod journal (crankpin) diameter 33.976 to 34.000 mm (1.3376 to 1.3386 inch)
    Oil pressure (60 degrees C/140 degrees F) 2.97 to 5.86 bars (43 to 85 psi)
    Crankshaft runout 0.05 mm (0.002 inch)

     

    GSXF 750

    Crankshaft and bearings

    Main bearing oil clearance
    Standard 0.020 to 0.044 mm (0.0008 to 0.0017 inch)
    Maximum 0.080 mm (0.0031 inch)

    Main bearing journal diameter 35.976 to 36.000 mm (1.4163 to 1.4173 inch) <-- THIS CAN'T BE RIGHT, SHOULD BE SAME AS GSX750R 88-89?
    Crankshaft thrust clearance 0.05 to 0.13 mm (0.002 to 0.005 inch)
    Right thrust bearing thickness 2.42 to 2.44 mm (0.095 to 0.096 inch)

    Connecting rod side clearance
    Standard 0.010 to 0.020 mm (0.004 to 0.008 inch)
    Maximum 0.030 mm (0.012 inch)

    Connecting rod big end thickness 20.95 to 21.00 mm (0.825 to 0.827 inch)
    Crankpin width 21.10 to 21.15 mm (0.831 to 0.833 inch)

    Connecting rod bearing oil clearance
    Standard 0.032 to 0.056 mm (0.0013 to 0.0022 inch)
    Maximum 0.080 mm (0.0031 inch)

    Connecting rod journal (crankpin) diameter 35.976 to 36.000 mm (1.4163 to 1.4173 inch) <-- THIS CAN'T BE RIGHT, SHOULD BE SAME AS GSX750R 88-89?
    Oil pressure (60 degrees C/140 degrees F) 2.97 to 5.86 bars (43 to 85 psi)
    Crankshaft runout 0.05 mm (0.002 inch)

     

    There must be error at service manual because:

    http://www.partzilla.com/parts/detail/suzuki/SP-12229-06B10-0A0.html

    1988 GSX-R750L CRANKSHAFT (MODEL J-K)

    1989 GSX-R750L CRANKSHAFT (MODEL J-K)

    1992 GSX750FT CRANKSHAFT

    I'll have to check these measurements as soon as my new crank and rods arrive.

    748cc to 1004cc with 749cc crank?

    in Oil Cooled

    Posted

    On 29.1.2016 at 0:01 AM, tabby59 said:

    Don't forget about probably needing the cases to be bored also.

     

    Yes, I'm aware of this, few millimeters must be bored from top case.

    On 30.1.2016 at 0:38 AM, slingy1157 said:

    Mains are the same i thought,  but big ends are different though so you cant put the short stroke rods onto the longstroke crank. And maybe the teeth number on the crank so may need the clutch basket to match the crank. I looked into all this when i had my 750 turbo.

    I'm going to use long stroke rods and I was aware of clutch issue too, teeth number should be different IIRC.

    I thought I'd look for possibility to use K4 GSX750R or GSX1000R clutch mod, with B12 engine it is possible.

    On 27.1.2016 at 3:01 AM, cregnybaa said:

    Don't think zx9 are 79mm not from the c model on anyway but bmw s1000 might be worth having a look at they are 80mm.

    Thanks for tip, I'll look into this.

    • Like 1

    748cc to 1004cc with 749cc crank?

    in Oil Cooled

    Posted · Edited by gsx-f__k_UH13

    B12 sleeves OD is around 85mm and there is 15mm gap between 1-2 and 3-4 and 40mm between 2-3.

     

    Edit:

    I talked with my machinist guy and it seems we decided to go with B12 sleeves, K8 Hayabusa pistons and long stroke crank.

    Result would be 1004cc.

    IIRC, K8 Hayabusa pistons would be around 2mm lower than gen1, right?

    748cc to 1004cc with 749cc crank?

    in Oil Cooled

    Posted · Edited by gsx-f__k_UH13

    Hi,

    I'm planning to build 955cc engine out of 748cc by swapping crank from 749cc and overbore from 73mm to 79mm.

    Can 748cc be bored to 79mm? I know older 749cc can't, just 91-92 has enough material.

    I have sleeves from B12 I could use if they are shortened.

    I know I can get 79mm pistons from JE, but they are bit pricy, looking for cheaper alternative method.

    I have B12 79mm pistons, but they have 20mm wrist pin.

    Does anyone know wich pistons would work?

     

    EDIT:

    This project seems to have another issues too..

    See below.

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