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I found another set 600 TB's and going to buy it if I can't just replace that one plate.

Where I can get custom made stainless steel plates? Anyone knows? I've kinda looked everyhere..

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

I think this has been talked about here but just a reminder: https://www.customfighters.com/5103/motohorhos-gsxr/

If this is not a trouble for you I'd be most gladful.

WIP. I've not mounted cases properly as I need to check chainline when I get this 99 R1 swingarm fitted where it should be.

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

Does your mate happen to have a CAD image for ignition pickup cover?

True.

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 (sorry if this insults some people somehow, I'm finnish and just thought it's hilarious)

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

I can't find any info with my engine number.

Hi. Are you going to use a spacer plate (and for example 81mm busa pistons) or aftermarket low comp pistons?

What you can tell about V715?

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

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

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.

I just heard same from another forum, well it doesn't cost anything to ask when I get clutch bearing. Thank you beam!!

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€.

Hi guys, after some setbacks, this is coming to sort out. Atleast when UPS finds my pistons from Germany.

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?

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 plainassembling of a B6/750.The 750R-88/89 have a bigger bore, so the idea of this combo is to increase the capacity of theengine. (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 thecompression. 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.

Yes, I'm aware of this, few millimeters must be bored from top case. 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. Thanks for tip, I'll look into this.

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?

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.