Upshotknothole

Yeah, thinking the cam sprockets aren't lined up properly with the slotting and need to be checked. Even with the tappets backed all the way out, are you still getting interference when turning the engine over by hand? I've accidentally put the cams in 180 degrees off before and the engine still turned over fine, was just sucking instead of blowing at the exhaust.

They use the same part number for all of the tappet rockers in the oil cooled bikes from 86-06. Sure the cams are aligned correctly? Also if the rockers show any signs of wearing through the hard surface coating, they're garbage unless you get them resurfaced. Curious if that top one was already resurfaced at some point. Do you have enough matching rockers to put together a matching set? Verify the sprockets are the same as the old cams and that they're lined up the same? I checked APE's website and they only mention repairing the rockers, no mention of them ever being any different ones for the tappet heads. Webcams only lists two different styles, standard and high lift. Guessing some of them were repaired in the past. Just try and match up 8 of them and double check the cam sprockets.

I think I posted up the list of cams. If you look up the powerscreen cam part numbers and cross reference them with what else suzuki stuck them in, you'll see the difference. I want to say they shared the intake and exhaust cams with various other Rs and Fs, bandits came later and got different cams. Now whether that's what they came from the factory with or what the parts compatibility has been updated to because Suzuki discontinued a lot of parts, who knows. I've helped a friend build a slabby 750 with a gsx750f engine because that's all we had available and he didn't want to spend a bunch of money tracking down a gsxr engine. Swap the carbs and run it if it's what you have, you can always swap out the engine later if you find something better.

Yup. Didn’t even think about those, thanks! Probably a bit small for an 1127 with fairings in an area where filtering isn’t allowed.

Anyone recognize this cooler or know what it’s off of? Trying to get parts together before I start on a full faired 7/11 build, and the stock curved cooler will never clear the 1100 exhaust. This one looks absolutely tiny, my other bikes have either 16 or 17 row coolers.

8-12nm per the Suzuki service manual. No mention in the manual of them being wet or dry, but I would think a touch of oil would reduce the friction of them going in.

That poor bike, but I imagine srads were cheap at the time.

Thanks, I'll try with fuel first.

The really shitty thing is that they only painted the left side of the engine.

I was poking around at my slingshot 7/11 this evening, it had been stolen before covid and recovered during covid and sat outside for way too long. I’d noticed some paint like drips on the left side of the engine and I finally tried seeing if they’d come off. Looks like they spray painted parts of the engine, exhaust, and oil lines, I guess they weren’t a fan of the factory grey. Any ideas on what might remove spray paint without stripping the original paint? Or should I just plan on stripping everything down to bare metal and giving the engine a refresh at the same time? I’ve got another 7/11 to finish first, so I’m not in any rush to get this one back on the road.

The list I posted is also for what's currently available still from Suzuki for sale. Suzuki being as cheap as they are, might have consolidated the cams down to just a few models to keep manufacturing as replacements. Only a guess.

They stuck the same intake cams in everything except the bandits. This Suzuki 12711-06B90 CAMSHAFT fits the following models and components: Aftermarket Parts Engine Camshaft Suzuki Motorcycle 1988 GSX-R750L CAM SHAFT - VALVE (MODEL J/K) Suzuki Motorcycle 1989 GSX-R750L CAM SHAFT - VALVE (MODEL J/K) Suzuki Motorcycle 1990 GSX-R750L CAM SHAFT - VALVE (MODEL J/K) Suzuki Motorcycle 1990 KATANA - GSX600FT CAM SHAFT - VALVE (MODEL J/K/L/M) Suzuki Motorcycle 1989 KATANA - GSX600FT CAM SHAFT - VALVE (MODEL J/K/L/M) Suzuki Motorcycle 1991 KATANA - GSX600FT CAM SHAFT - VALVE (MODEL J/K/L/M) Suzuki Motorcycle 1993 GSX600FT CAM SHAFT - VALVE (MODEL J/K/L/M) Suzuki Motorcycle 1995 KATANA - GSX600FT CAM SHAFT - VALVE (MODEL J/K/L/M) Suzuki Motorcycle 1992 KATANA - GSX600FT CAM SHAFT - VALVE (MODEL J/K/L/M) Suzuki Motorcycle 1988 KATANA - GSX600FT CAM SHAFT - VALVE (MODEL J/K/L/M) Suzuki Motorcycle 1994 KATANA - GSX600FT CAM SHAFT - VALVE (MODEL J/K/L/M) Suzuki Motorcycle 1996 KATANA - GSX600FT CAM SHAFT - VALVE (MODEL J/K/L/M) Suzuki Motorcycle 1989 KATANA - GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1990 KATANA - GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1991 KATANA - GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1987 GSX-R1100 CAM SHAFT/VALVE Suzuki Motorcycle 1986 GSX-R1100 CAM SHAFT/VALVE Suzuki Motorcycle 1988 GSX-R1100 CAM SHAFT/VALVE Suzuki Motorcycle 1992 KATANA - GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1993 GSX1100F CAM SHAFT/VALVE Suzuki Motorcycle 1993 GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1990 GSX-R1100 CAM SHAFT/VALVE Suzuki Motorcycle 1989 GSX-R1100 CAM SHAFT/VALVE Suzuki Motorcycle 1988 KATANA - GSX1100FP CAM SHAFT/VALVE The exhaust cams were used in the powerscreen engines, slingshot 750s, and 1052s. This Suzuki 12721-06B90 EXHAUST CAMSHAFT fits the following models and components: Aftermarket Parts Engine Camshaft Suzuki Motorcycle 1988 GSX-R750L CAM SHAFT - VALVE (MODEL J/K) Suzuki Motorcycle 1989 GSX-R750L CAM SHAFT - VALVE (MODEL J/K) Suzuki Motorcycle 1990 GSX-R750L CAM SHAFT - VALVE (MODEL J/K) Suzuki Motorcycle 1989 KATANA - GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1990 KATANA - GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1991 KATANA - GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1987 GSX-R1100 CAM SHAFT/VALVE Suzuki Motorcycle 1986 GSX-R1100 CAM SHAFT/VALVE Suzuki Motorcycle 1988 GSX-R1100 CAM SHAFT/VALVE Suzuki Motorcycle 1992 KATANA - GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1993 GSX1100F CAM SHAFT/VALVE Suzuki Motorcycle 1993 GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1988 KATANA - GSX1100FP CAM SHAFT/VALVE So there's a slight difference with the cams, but not much.

M carbs should be 38s depending on where the bike was sold, and choke knob is on the side. Probably GSXF600.

Post a photo of it.

Yeah, it's a tight fit with the adapter plate in 7/11s, but I've ran them in slingshots. If you need more room, they sell a bung that can be welded directly into the tank. Planning on doing that with one of my tanks that is paper thin around the petcock area from rust.

Get a Pingle, lower profile than the stock petcocks.

This would explain why the 1000RR clutch MC I tried using years ago would never work. It looked good, but was useless.

Thanks, I figured the 1127 would be more fun in the 750, but wasn’t sure if there was any real advantage to either engine getting boost. I’m sure I’ll be posting more questions when I start the actual build.

Thank you. 1200 will get the special treatment and the 1100 will start getting prepped to be stuck in the 750 this weekend.

And it immediately turned into talk about GSXF1100 engines and cams. Figured I’d ask in here instead.

I have an 1127 GSXR engine and an early 00s Blandit engine, one is going into an NA 750, the other will eventually get the boost treatment in an 1100 slingshot frame. Which of the two engines should I set aside for the boosted engine? Planning on doing pistons and possibly boring the cylinders with a goal of 250 at the rear with FI. Making the NA engine in the 7/11 fun isn't a problem, trying to figure out which of the two engines is the better candidate for boost is where I'm at now. Is there enough difference between the 1100 and 1200 heads to make a significant difference? Does one have a stronger transmission than the other? I've had a few 1100s, but this is my first 1200 and it's modern by oil cooled standards. Also both engines are basically unknowns to me so I'll be tearing into them a little bit just to see what condition they're in. If I was to guess I'd say both have been sitting for maybe 5-15 years? I think I last fired up that 1100 engine in 2010.

Hindle sells exhausts for slabbies and 88-89 slingshots, but I've gone back and forth with them for 90-92 and until they can get a bike in to test fit the exhaust, they won't sell them. Really want to just tell them to make the down pipes 1/2" longer and keep everything else the same and we'll make them work. Yosh America wants $450US for a custom can, probably looking at over a grand for a full exhaust from anyone that knows what they're doing anymore. Pretty sure the UK has way more slingshot stuff floating around than we do. All of our bikes got totaled or are sitting in the garages of collectors now.

It’s the only paint scheme I’ll keep stock.

Tried fitting my 1200 exhaust tonight. Does not like the fit on a 750. Definitely time for a bigger engine. Couldn’t even get the header on without removing the oil cooler from the mounts. Looked at my 7/11 that has an akro 1200 exhaust and it looks like with a straight oil cooler and spacers for the lower mounts, it’ll clear.

So I was curious and checked the part numbers. The gsxf1100 intake cams were used in everything from the gsxf600s, to gsxr750s, to gsxr1100s. The exhaust cams were only used in the following bikes. Suzuki Motorcycle 1988 GSX-R750L CAM SHAFT - VALVE (MODEL J/K) Suzuki Motorcycle 1989 GSX-R750L CAM SHAFT - VALVE (MODEL J/K) Suzuki Motorcycle 1990 GSX-R750L CAM SHAFT - VALVE (MODEL J/K) Suzuki Motorcycle 1989 KATANA - GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1990 KATANA - GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1991 KATANA - GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1987 GSX-R1100 CAM SHAFT/VALVE Suzuki Motorcycle 1986 GSX-R1100 CAM SHAFT/VALVE Suzuki Motorcycle 1988 GSX-R1100 CAM SHAFT/VALVE Suzuki Motorcycle 1992 KATANA - GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1993 GSX1100F CAM SHAFT/VALVE Suzuki Motorcycle 1993 GSX1100FP CAM SHAFT/VALVE Suzuki Motorcycle 1988 KATANA - GSX1100FP CAM SHAFT/VALVE Sorry, the parts site is calling them Katanas, not me. I also don’t have a gsxf1100 engine and don’t see myself getting one any time soon.