Soldato
- Joined
- 5 Jun 2003
- Posts
- 8,732
- Location
- sawley/ long eaton
yeah a good price, i'll look in to it abit more when I have the money saved
Project; Turbo GSXR Slingshot
- Thread starter Danm54
- Start date
Soldato
- Joined
- 24 Sep 2013
- Posts
- 2,658
This is awesome a good friend of mine has a NOS + Turbo'd Big bore Suzuki BKing.
following with interest
following with interest
Just a couple of coats of etch primer followed by 2-3 coats of PJ1 engine paint. Hopefully its taken well.
Oh you'll know when its running! Was really wanting it on the road this year but as usual its down to cash, still silly amount to go on the engine.
Might get a few days at Santa Pod and a track day or 2 this year.
The rest is slowly coming together though.
Might get a few days at Santa Pod and a track day or 2 this year.
The rest is slowly coming together though.
£400 is a lot yea. Shims aren't too bad but they are time consuming and fiddly when the engine is in the bike. I guess that's why you've been quoted so much.
When I had the head off the other gsxr rebuilt it cost £360 for re-cutting the valves, shimming, skimming and cleaning all ready to drop back on.
When I had the head off the other gsxr rebuilt it cost £360 for re-cutting the valves, shimming, skimming and cleaning all ready to drop back on.
That seems very expensive. Just done the shims on my Tornado, but the correct diameter shims weren't available so I ended up buying some oversized ones (9.48mm for Jap bikes) and grinding them down to 8mm on my lathe.
Started to sort through some engine bits to find the best ones, cleaned a few bits up and placed them in. Found dowels, sorted crank bolts out etc!
Got the gear shift about figured out now, seemed obvious when I took it apart, thankfully I have a manual.
I've stupidly put half of my good gear box in the mock engine which I bolted in the frame for the manc bike show so I need to strip it all out to get it!
I'll do some measuring up for my air box etc first though, while its in one piece.
Been told from Robinsons one of my crank bearings has been ordered from Japan so it's a 2-3 wait for that.
Got a few more bits on the way including a base gasket so I should hopefully be able to work out the comp ratio and see how much my pistons need altering.
The bottom yoke is also drawn up ready, just needs a few hours of machine time and I may have a front end starting to go in.
Got the gear shift about figured out now, seemed obvious when I took it apart, thankfully I have a manual.
I've stupidly put half of my good gear box in the mock engine which I bolted in the frame for the manc bike show so I need to strip it all out to get it!
I'll do some measuring up for my air box etc first though, while its in one piece.
Been told from Robinsons one of my crank bearings has been ordered from Japan so it's a 2-3 wait for that.
Got a few more bits on the way including a base gasket so I should hopefully be able to work out the comp ratio and see how much my pistons need altering.
The bottom yoke is also drawn up ready, just needs a few hours of machine time and I may have a front end starting to go in.
The Robinsons order came through last week, checked it over tonight and I'm not best pleased. The main crank shells are nearly all scrap.
I have 4 halves in bags with part numbers written on by hand.
One is either the wrong part or the wrong part number has been written on.
I have a shell that's black and looks corroded.
These don't appear to have the colour on either so other than a hand written number I have no way of knowing its size for sure.
I have 8 boxed halves, one looks good but all the rest have the plating missing/peeling off the back.
Very disappointed with Robinsons to be honest, I don't expect them to inspect boxed shells but sending shells out in bags is bad, especially when they're clearly useless.
Its not like they're cheap either.
I have 4 halves in bags with part numbers written on by hand.
One is either the wrong part or the wrong part number has been written on.
I have a shell that's black and looks corroded.
These don't appear to have the colour on either so other than a hand written number I have no way of knowing its size for sure.
I have 8 boxed halves, one looks good but all the rest have the plating missing/peeling off the back.
Very disappointed with Robinsons to be honest, I don't expect them to inspect boxed shells but sending shells out in bags is bad, especially when they're clearly useless.
Its not like they're cheap either.
Soldato
- Joined
- 24 Sep 2013
- Posts
- 2,658
Bloodyhell, not good at all
Have you contacted Robinsons yet? what did they say?
Have you contacted Robinsons yet? what did they say?
Finally I have some shells! Took long enough. ..
I've moved house since the last update so I've been busy sorting the garage and shed out ready for some bikes!
I do like having my own tidy work space!
Started fitting a few bits into the lower case, oiled the oil pump up and fitted with new O-rings, got the selector drum and shift forks in too.
Ready to plastigauge the main shells tomorrow aftrrnoon.
All genuine Suzuki O-rings, circlips, shims etc.
The long awaited shells!
Dug the crank out ready, all nicely balanced.
I've moved house since the last update so I've been busy sorting the garage and shed out ready for some bikes!
I do like having my own tidy work space!
Started fitting a few bits into the lower case, oiled the oil pump up and fitted with new O-rings, got the selector drum and shift forks in too.
Ready to plastigauge the main shells tomorrow aftrrnoon.
All genuine Suzuki O-rings, circlips, shims etc.
The long awaited shells!
Dug the crank out ready, all nicely balanced.
Been a while, not too much has happened but I'm still making progress!
The shells gauged up fine, one slightly over .05mm one slightly under .05mm and the rest crack on .05mm
Held up now as I need 3 more gearbox bearings to get the bottom halves together and they come in at £180!
Got the halves together and the barrels on so I can cc the pistons and measure the piston to deck height.
Worked out the comp ratio, I cc'd No.1 chamber on the head and a piston in No.1 cylinder set 1mm down the bore.
Combustion chamber held 24.4 ml so 24.4cc
Piston 1mm down held 6.5ml so 6.5cc
77mm bore 1mm deep is 4.66cc
6.5cc minus 4.66cc = 1.84cc which is my piston volume.
Piston deck height is 0.533mm
Cometic do gaskets in multiple thicknesses so I've worked it out with 2 different ones. A 0.018" and 0.040"
So with all that, it came out at
9.38:1 with the .040" gasket
10.05:1 with the .018" gasket
The .018 gasket gave me a squish band of 0.96mm and after input off OSS it was suggested that this may be too tight for a boosted engine.
So to get my comp ratio right with a bigger squish band I'll use a .027 head gasket and have a dish volume of 1.96cc, it'll work out at 9.24:1 ratio with just over 1.2mm squish band.
The dish volume is equal to a pocket 1mm deep by 50mm diameter which with removed material and tapered edges it should work out nicely.
The pistons were sent to Roger Upperton last week for a 2cc dish to be put in them.
Stripped to head and cleaned it ready for primer and paint.
2 coats of primer and a fair few thin coats of PJ1 and I have this.
New set of valve springs, gear shift springs and an oil gallery plug arrived today.
May get the valves in tonight then the tedious task of setting the clearances!
The shells gauged up fine, one slightly over .05mm one slightly under .05mm and the rest crack on .05mm
Held up now as I need 3 more gearbox bearings to get the bottom halves together and they come in at £180!
Got the halves together and the barrels on so I can cc the pistons and measure the piston to deck height.
Worked out the comp ratio, I cc'd No.1 chamber on the head and a piston in No.1 cylinder set 1mm down the bore.
Combustion chamber held 24.4 ml so 24.4cc
Piston 1mm down held 6.5ml so 6.5cc
77mm bore 1mm deep is 4.66cc
6.5cc minus 4.66cc = 1.84cc which is my piston volume.
Piston deck height is 0.533mm
Cometic do gaskets in multiple thicknesses so I've worked it out with 2 different ones. A 0.018" and 0.040"
So with all that, it came out at
9.38:1 with the .040" gasket
10.05:1 with the .018" gasket
The .018 gasket gave me a squish band of 0.96mm and after input off OSS it was suggested that this may be too tight for a boosted engine.
So to get my comp ratio right with a bigger squish band I'll use a .027 head gasket and have a dish volume of 1.96cc, it'll work out at 9.24:1 ratio with just over 1.2mm squish band.
The dish volume is equal to a pocket 1mm deep by 50mm diameter which with removed material and tapered edges it should work out nicely.
The pistons were sent to Roger Upperton last week for a 2cc dish to be put in them.
Stripped to head and cleaned it ready for primer and paint.
2 coats of primer and a fair few thin coats of PJ1 and I have this.
New set of valve springs, gear shift springs and an oil gallery plug arrived today.
May get the valves in tonight then the tedious task of setting the clearances!
Tonight's effort
Oil seals in and a nice set of valves waiting!
Only 16 sets of these to do...
Bought this tool a while back now. With a rag under the head holding the valves in, set the collets up as shown, place on the spring and make sure its aligned with the valve, pop this over it and push down.
Easy!
4 down...
A full set ready to go!
Then I separated the shims I have, some a marked up, others not.
Will have to borrow a micrometer to check the unknown ones. Will start with the 168's in all as a base measurement then go from there.
Oil seals in and a nice set of valves waiting!
Only 16 sets of these to do...
Bought this tool a while back now. With a rag under the head holding the valves in, set the collets up as shown, place on the spring and make sure its aligned with the valve, pop this over it and push down.
Easy!
4 down...
A full set ready to go!
Then I separated the shims I have, some a marked up, others not.
Will have to borrow a micrometer to check the unknown ones. Will start with the 168's in all as a base measurement then go from there.