When I arrived on this forum, a member was selling PDF copies of both the Yamaha XJ650 XJ750 Service Manual and Turbo supplement on CD's. Your...
Any progress lately? jeff
Here's some advice I've given for the Waste Gate: I have often given the advice right or wrong, to sand and smooth the waste gate till it holds a...
Look at this pic of a Ebay generic turbo......one either end of the turbo are the turbine and impeller...The Exh muffler goes on the dark side...
Honestly, it looks like you've piped the 4 to 1 to the Exh side, the EXIT of the turbo............ Also, how are you supplying oil to the turbo...
Looking over your pictures.....can you make a schematic drawing of how you have the exh/intake/turbo/carbs plumbed? I see all those K&N filters...
I can't debate Matt's math because he's correct.....but I will be happy to put my '75 H1 up against any non-turbo XJ 750cc or less to show that...
I skimmed it Simmy....not enough I suppose.....lol jeff
If it's "crapping" at 5500-6000rpm and not building boost, chances are, boost is exceeding fuel pressure. You NEED a fuel pump producing more...
I love it Polock<LMAO>.......it wasn't lost on all....... Colin.....there isn't enough there to go after, plain & simple. Best advice when I left...
Nice work Jay and congrats on getting it running. Most...95-98% have issues with their carbs....looks like you have more than a clue. My guess is...
Mad...., let me know via PM if you need a pdf copy of the Turbo manual...it's actually a supplement for the XJ manual, I've got both if you need...
Thanks for posting the info Simmy, I learned something new so I can go home for the day! jeff
First, welcome.....second; with your system as highly modified from stock as it is, I can only give you some "overall" suggestions. It sounds like...
Simmy, From what I remember reading, the o rings on the shaft itself leaks and allow the oil to drip back to the turbo but I really don't know...
Simmy, I "believe" the only access is by splitting the cases. I've been using a check valve located right after the turbo on oil pipe #2 at the...
Congrats on your turbo Cmd..., I'm trying to figure out where you are in "the process". You mentioned that you ultrasonically cleaned the...
The guy got around 3500 for it, which is a lot more than any of us with Yammy REGULAR factory turbos would get....good for him although I'm not...
Congrats Crank on your bike. I have a garage full of very fun vintage bikes but my turbo, once it's making serious boost, puts a grin on my face...
FWIW: I have worked on bikes & ridden since the early 70's. I've personally met Lucas, the Lord of Darkness and his positive ground systems, I've...
Many of us "made do" when we were young and poor like you. Listening to Chacal and getting at least one set of JIS drivers will make your next few...
No, it won't damage metals but it will degrade orings/rubber seals so remove all before dipping. jeff
The Turbo tranny is bulletproof however it's not Fool proof and somewhere, sometime a fool dropped it or used a hammer to "loosen" maybe a bent...
Berrymens may be the best thing for most guys but it's NOTHING like it used to be. The old formula caused instant burning of skin....that's how...
If similar to...
I always know when I"m talking with a "real" vintage restorer because invariably they will talk about their British bikes and never mention the...
I think the check valve you are referring to on the other forum is the Oil Supply check valve. Des redresses the seat for the ball, improving the...
Yes, I use a 12V solenoid on my fuel supply line to prevent passing of gasoline and a very low pressure check valve on the Turbo's oil return line...
Not picking an argument but the production numbers for the 82 turbo were approx 3500 and the '83 at only 1500. A couple years ago on the Turbo...
A large ultrasonic machine works great. I picked this up on fleabay for 200 bucks a bunch of years ago.....takes a full bank for four carbs...
I was watching all your recent updates and was waiting to comment and didn't see your question. I mounted the R6 pump using a clamp, with it's...
Len will get you hooked up with good parts....you can also reach out to Brian at BD Designs for carb related parts as well as graphics if you need...
I had a poll on another board....the verdict was overwhelming in favor of #2.....so it shall be....for a while anyway....hope you liked #1 jeff
I prob should have clarified that while I absolutely agree that the stock brakes are somewhat "lacking", I elected to stay with the stock...
Go to the Turbo forum and ask...the guys there will know. https://www.tapatalk.com/groups/tmioa22687/yamaha-seca-650-turbo-f10/ jeff
Pull the gas tank and check your fuel pump,...if you have spark now but not running, it's the fuel pump or relay. Your gas issue has likely been...
I'll be happy to snap some pics for you......but these guys advising you, are the cream of this forum.....I'd listen.... Let me know bout the...
My Turbo's headlight is fairly dim until it revs to 2K or more.....always figured it was just the way the bike was. These early Japanese charging...
When I was developing solutions to fabricating tapered headpipes for one of my H1 engines(green bike), I invested hours into vacuum infusion...
FWIW, I have stock dual brakes on my '82 Turbo and the stock brakes even after being rebuilt/hoses replaced during the restoration are actually...
Fleabay is your friend.....I was also looking for a r/h exh several years ago when I built mine and finally after waiting forever, I used silver...
Doesn't make sense to me why you wouldn't use metric? I bought my kit from Brian at BDDesigns and it came with every oring needed for my turbo's...
No one on the Turbo board had heard of it before either and we have some pretty hard-core turbo guys who've been around a long time. Thanks Simmy...
Yup, I had no idea this even existed!! I wonder how my Yamaha Turbo running at 18PSI would do?? jeff....aka Eradicator
I think what Manbot is trying to say is that no matter what, these Turbos do not bring premium pricing and his bike is VERY nice! It is very much...
Go to the top of the page and send a PM(private message) Admins, hope this i ok....we're all riders! Turbo board:...
Nice looking bike GH....but as you noted, the compressor vanes are shot. If you come over to the Turbo board, there are a few who will help if...
Thanks for your explanation Manbot. I've read of using other R&R's to shunt the surplus charge as heat but haven't done it to mine since most...
Dang XJ, don't be so humble about this site<LMAO>, I sent him over here from the TURBO forum because I knew you guys would treat him right and...
Congrats on reaching this Milestone Simmy~!~ Keep doing the "next thing" and soon you are going to have a really nice, new bike! jeff