1986 Suzuki GSX-R 750 - Restoration - Disassembly Part 2
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- čas přidán 20. 12. 2023
- Continuing the disassembly of the Junk Yard Slabbie
I'm starting to find some issues as I dig deeper
#gsxr750
#Suzukislingshot
#gsxrslingshot
#classicsuzuki
#slabside
Great work. I’m just working on a GSXR 400 that was a yard find. I will need to strip it down to insect the signal generator end of the crank. Your video is great info for a similar era machine. I am out on Vancouver Island… I do Vapor blasting… I will donate my time to clean up some bits for you. Cheers
Cheers Scott, I’m in Northern Ontario , enjoy your restoration !!!
Very enjoyable series, cheers.
Glad you enjoyed it, thanks for commenting!!
Thanks for discussing cost. There is no such thing as "Free Shipping" that can't be stressed enough. Even if a company says "Free Shipping" they are lying, and the politicians let them get away with it. Thank you for discussing cost.
Yea, it’s strange between USA and Canada, soooo expensive, yet from Europe and Asia to Canada is cheaper and faster. Japan to my door in 3 days !!!!
Don't if you use the Suzuki bandit forum's but a great place to start for hard to find part's and always an expert around for advice.
Hi, before you buy the camshafts take note of the colour of the blobs of paint on them. Yours appear to be blue. The cams you buy also need to have blue paint as this relates to the production run of the original machining. The gsxr engine is an easy one to work on for beginners to learn an engine rebuild. Good luck
Cheers, I’m not going to build this one . It’s going to be too expensive , since it’s not original to the bike I’ll be finding a donor ! All to be revealed in an upcoming video , thanks very much for commenting
Saw the cam lobes and the followers and it reminds me of my Interceptors! Hopefully the bottom end is solid and you can source the top end bits and make a good runner out of it!
It’s going to cost way too much to source even used parts at this point . As others have said, a slippery slope with this engine. It’s not the original so….. a B12 looks to be the likely way to go
Same experience here with my VF1000 engines
A good tool to have to protect the end of the crank (and any shaft with a hole) is a set of OTC Shaft Protectors. OTC is a brand I trust but there are cheaper ones.
Good to know, thank you
@@true-moto-resto you're welcome. Love your videos btw. Always nice to see other restorers' work and get tips.
First! Will watch after work.
As I said before -dream bike!
The 20 years old Busa I have is bad ass, but this one is a beast
That gasket is an MLS gasket = multi layer steel. Probably a Cometic one
Hi there just found and am enjoying your video's. Keep it up. Been a mechanic for too many years to count, not bikes but all are the same really.
The pitting on the cams and followers/rockers are BAD. There is wear as you describe suggesting they may have been too soft and not resilient enough. The pitting also may be due to the lobes being too soft but I would consider inadequate lubrication has been a significant factor. There is a lot to suggest the bike has not had too many oil changes and or cheap oil was used together with having been ridden hard.
1 Cyl bores look like zero crosshatch
2. Carbon build-up on the valves.
3. Cams and followers pitting and general wear.
I recall the bike shows 30000/35000 miles/Km's from your earlier video. If true then the engine has not been looked after with the hotter upper end really suffering due to oil viscosity. One of my bikes is a 2003 FJR1300 with 170000 Km's on it and is running too well for me to fit the replacement low K engine I bought for it. They will last if looked after. Good oil with regular changes is important.
The piston pin damage is nasty. My Yamaha XS1100 has replacement cyl liners that are shrunk into the barrels. Maybe if the pistons are able to be reused, a replacement liner could be used with the original piston/s and new rings.
Freight from the U.S. to Australia is also horrendous. I can relate to so much of your situation but these are bikes and we love working on them
Sorry about this being too long
Kevin - Melbourne Australia
Cheers Kevin, as you will see in later videos, I’ve decided to Not rebuild this engine. Way too many issues to make financial sense . If it was the original engine, I’d rebuild it, but it’s an 88 slingshot. Instead I have a donor engine for it - that’s coming up in a video to be seen in a few weeks. Thanks for watching and taking the time to comment !!
@@true-moto-resto If that is a Slingshot motor, the crabs are wrong, yours are 86 -87 pre slingshot. As you're discovering Gixxers are often heavily messed about with, many being raced or crashed, well they are here in the UK. The cam chain and most of the engine and other parts are all made as light as possible, these bikes were made to race. As you probably know weight is the enemy of power. The fact your sub frame hasn't been cut and converted to a bolt on, is suggesting this frame at least hasn't been raced. They were converted so they could be replaced easily, as sub frames can often get bent with off's.
@@Gundimuck Hi there, yes, the Carbs are the original flat slides for 1986 Canadian Bike , and the engine was a '88 slingshot (Engine Code starting with R707 xxxxx). That engine isn't going back in though, its too far gone to repair on any sort of reasonable budget.
Fixing that motor could be a slippery slope. I would be inclined to work on the rest of the bike and wait on a good donor motor to pop up. Guess it depends on what you want the bike to be when you’re done. And of course how much $$$ you want to spend. A replica AMA Yoshimura Superbike would be cool. Interested in seeing where this go’s.
Slippery slope is right !
Cams are same as GSX1100F all years with B on notched end. Head with dot on side is same as GSX750F up till 1992. These are popular bandit upgrades so you'll be competing with those buyers for them. When I'm looking for a good replacement with low miles I look at the speedometer from the sellers same parts bike and only purchase if less than 20K miles. I've found heads with valves that are hardly broken in this way. Compare base circle with lobe via calipers. all should be within a couple thousands of one another.
Bandit 1200 engine going in , this engine is trashed
I have the same fear when pulling flywheels. I have also tried and used different methods. Overall the impact gun works well, but the most important thing is that you have a good quality puller. And if possible, use a spacer or bolt to preserve the threads. About leaking valves. In my opinion, the leakage is not sufficient to explain a zero reading on the compression test. This would require the fluid to drain immediately. They leak and need to be cleaned and lapped, that's for sure. What about the piston rings? Some are stuck in the piston grooves? I would also check the condition of the lower end parts first. If you're unlucky, the crankshaft or rods will be gone too. Or gearbox damage. I hope you can find some parts for a decent price.
Yea, thanks for commenting , much appreciated . this engine is now in boxes in my other building. Too many issues. You’ll see in the next video. It’s all stripped down.
The rings looked ok, and none were stuck. I could still see the hone marks on the cylinders too. in an earlier video, I put oil in the cylinders and the compression never changed from 20, 40, 0, 0
Bottom line is , for far less than the cost to fix it properly I can buy a donor bike and use the engine and other parts.
The fact it’s been bored might suggest a very high mileage engine which might not Be a gd sign for the bottom end The early ones of these used to break big end bolts under racing conditions I would assume in 88 the sorted that I purchased a really nice set of early fzr1000 barrels and pistons so there r still good parts available Germany is well regarded as a place to get good bike parts I’m not sure why that is but I’ve heard it mentioned several times I’m like u as I live in NZ buying parts from most other places in the world is so expensive with the shipping but that’s because of geography Looks like that engine has been burning a fair bit of oil so either rings or. Valves guides r worn that could be expensive with guides but Suzuki have that vintage parts programme which hopefully cover your model Merry Christmas to u and the family
Thank you! Agree. It’s too bad Suzuki halted their vintage parts program. I spoke to a rep last year when they were just selling off the last of the inventory . Their site is now gone.
If the engine was original to the bike then I would probably do whatever it would take to sort things out properly. If it was non original but still the correct engine for the bike then I like your thinking towards the end of the video to get what you have up and running. Given the engine you have is neither and belongs to a later model I would draw a line on it now and wouldn’t spend anymore money on it. I like your idea for the Bandit engine which I think will sit well with your Skoal Bandit plan and will be a nice twist. I think the air/oil cooled motor was in production until the mid noughties and I would go as late as possible. Be patient, you’ve got more than enough to keep you going with the rest of the bike. Relatively new subscriber from England and I enjoy the channel. Good work!!
Thanks Chris for the comment. I agree with you.
I saw the #3 intake lobe and thought you'd notice it and then a few minutes later, you did.
Re the cam chain, I've seen similar chains in some pretty exotic newer bikes so I wouldn't worry much about it. Have a look at an MV August Brutale and you'll see a similar chain (just so happened to have recently watched on pulled apart lol). Hey, if that's good enough for them...
Yea, I watched the same Brutale video LOL
I’ve made my decision on what to do, so you’ll see all that in the next video.
Thanks for commenting, always appreciated
@@true-moto-resto if it's the same one I watched, I have some serious concerns about that bike. The kid is doing great getting his hands dirty but he's making some serious mistakes. A bit too confident.
@@lornetontegode6986yea, same video I saw. I’ve cringed a few times myself . The young lads not afraid to get stuck in, but a fire burned bike like that yikes. Yesterday I was perplexed which he removed the starter like he did, didn’t realize those long bolts actually hold the starter together.
@@true-moto-resto that front wheel is scary and some of the rear pieces are very compromised. The starter motor could've been removed without splitting it like that.
@@true-moto-resto btw, if you enjoy restoration videos check out RRC Restoration.
Hey True Moto, there was a utuber in southern Ont who has tons of GSXR's & parts, I think he is a plumber by trade. Can't remember his user name and not sure if he is still making videos. Cheers, Doug (Vancouver Island)
Thanks, I’ll have to search
Hey there is a 93 katana 750 engine for 400can in calgary market place/ face book, its the same short stroke motor you pulled out
Thanks for the lead! I think I have a local (4 hours away) lead on a complete bike
Well i hope you have better luck than i did , i have a little over two parts bikes now haha, Canada hey
The rocker arms are still available but they ain't cheap, £103 EACH, . In my personal opinion I would rather go the Bandit 1200 route regarding an engine swap, could be a LOT cheaper in the end.
Yea I got 2 new NOS rockers for $50 but then I stopped buying stuff because the engine is so bad. It’s now in bins and I’m searching for a donor now. B12 if possible or a katana 750. Cost of fixing this one will be over $2000 using used parts
@@true-moto-resto hopefully you can source a decent engine and resume the rebuild, 🤞.
That engine should be 749cc that's a later bottom end?
It’s an engine from an 88/89 slingshot. Ie a R707 numbered engine