Yamaha Seca 650 Turbo

Oil leaking into turbo

feeds@yuku.com (egagnon3) — Thu, 05 Nov 2009 09:05:07 GMT

Hey guys,

I got the bike running, and man I can feel the turbo in first gear, it flys to about 60mph, then it stops. Even when I shift it won't go any higher than about 60~70 mph. I removed the internals of the fuel check valve, got a new air filter, replaced the plugs and gapped them to .026". The old plugs were white and chalky, indicating the bike is running lean, I think. The bike also seems to have oil coming from the turbo into the intake. The wastegate is blocked...

Drip, drip, drip...

feeds@yuku.com (PositivePressure) — Wed, 04 Nov 2009 09:29:11 GMT

Most of you are familiar with the failing oil feed line check valve. After many inspections I believe I have finally determined the cause.

The valve is a simple ball check. What is not so simple is the molded rubber seal inside. When that seal deteriorates no amount of cleaning will make it work again. The seal can crack, flake, or separate from the check valve body. The familiar drip follows.

Not being one to identify a problem without offering a solution I do have a...

what are the 2 wires on the 650 ignition box? please help.

feeds@yuku.com (maximturbo) — Mon, 02 Nov 2009 10:51:01 GMT

hi guys,

got a turbo 650 ignition.
there is 2 wires that are not part of the 2 main big connectors and i'm not sure what they are.
there is a very short pink one about an inch long with a single female connector on it,
and a black with white stripe with a single connector on it, the same length as the main 2 big connectors.

i have a wiring diagram that was scaned but i cant make out all the colors.
im guessing 1 is for the sidestand (which i dont...

Hey guys I am back with deals on parts

feeds@yuku.com (CarlosK) — Sat, 31 Oct 2009 11:29:17 GMT

Hey guys I am back. My bike has run so well I am clearing my storage of 1982 Seca Turbo parts.

I have a turbocharger for sale.

I have two parts bikes and willing to sell parts off either. Everything must go. For those of you that do not know me, you can run a search here for my name and find I was an active user about a year ago. If you look up my old posts you will find I had been restoring two bikes. One I...

New with exhaust ?

feeds@yuku.com (baldguy) — Sat, 31 Oct 2009 03:41:25 GMT

I have a 82 I bought a while back and just starting on it.I am trying to take off the exhaust on the left side.The bolts are seized on the turbo can I heat them up to get them lose with out hurting the turbo.Thanks

New owner, please help

feeds@yuku.com (egagnon3) — Thu, 29 Oct 2009 19:43:58 GMT

Hey guys,

I've been reading many of the previous posts and learned alot. The problem that I'm having is I recently got a '82 model, and not sure how it should be running. The problems i'm having are as follows: there is oil residue all inside the intake, boost gage stays in the "blue", there is a small exhuast leak past the wastegate, the bike drips oil out of the turbo after running, and the turbo doesn't seem to spin at idle, the bike won't...

Does anyone have a lens?

feeds@yuku.com (monkeys turbo) — Wed, 21 Oct 2009 13:15:52 GMT

I need the front right turn signal lens for a 1982 seca turbo. have not been able to find one anywhere. Does anyone make reproduce them?

Won't idle between 1k - 2k rpm

feeds@yuku.com (turbosteve) — Sun, 27 Sep 2009 06:23:44 GMT

I can't get my Yam Turbo to idle between 1K - 2K rpm. I've been cleaning the jets (over and over again) because the idle jets clog up so easily. I finally got all 4 cylinders to fire consistently with the help of 2 Keyster "economy" rebuild kits from BD Designs. Two more are on the way. The bike DID idle correctly for a day -- after another thorough cleaning -- but starting it after of week of sitting presented the same "no idle zone" problem. I know I might have...

Carb intake boots

feeds@yuku.com (Turbo T Bird Coupe) — Fri, 04 Sep 2009 17:25:48 GMT

So what do you guys do when your intake boots for the carburetors start cracking and leaking air? Mine were bad last year,so I replaced them with some XJ550 boots, which obviously required some modifications. They worked for about a year, and they've now started to crack and leak, probably from the extra heat and pressure that they see. So what do I do now, since the boots for our Seca's are discontinued?

Fuel Pump not operating / Yamaha 82 Seca Turbo

feeds@yuku.com (Lusso) — Tue, 01 Sep 2009 20:37:10 GMT

Electrics on the bike work. Yet, when power is fed directly to the fuel pump, it runs. Relays seems to be working. Any other areas I should check? Also, bike is not holding it's charge.

spark vs carb problems

feeds@yuku.com (Daviddurtschi) — Tue, 11 Aug 2009 08:41:46 GMT

Just an update on my 82 seca turbo. It hadn't run in a few years. cleaned the carbs (but no o-ring work). Ran good for 10 minutes then fouled the plugs (carbon). Could see that I had very little spark. Changed CDI and got better spark but still carboned plugs after 10 minutes. Changed coils and wires (used), and got great spark but still carbons plugs after 10 minutes of running. This last time, I put new plugs in and started it up, and ran for the usual 10 minutes and noticed that...

What is an 1982 worth?

feeds@yuku.com (cvnsuperman) — Thu, 30 Jul 2009 11:05:57 GMT

i am going to be looking at one today and thought that i would ask the experts.

Thanks,

carboned spark plugs

feeds@yuku.com (Daviddurtschi) — Tue, 21 Jul 2009 06:46:37 GMT

I'm still sorting out my 82 turbo that sat for a few years. I've cleaned the carbs, filters, oil check valve etc. When I put in new spark plugs, it runs perfect for about 10 minutes. Then when I slow down (phew) it doesn't want to idle and will kill. I have to run the starter for a minute or more to get it to start, then it will struggle to get off idle, sounding like just 2 cylinders are firing until I get it past idle and then it's great again, until I slow down.
...

vacuum line to fpr

feeds@yuku.com (Daviddurtschi) — Tue, 14 Jul 2009 13:21:08 GMT

On my 82 turbo, i'm having trouble with it being slow to start and seeming to run out of fuel. I checked the spark plugs and they're in terrible shape. I'll change them this weekend.
In trying to determine the problem, I noticed that the vacuum line that goes from the surge tank to the fpr has a tee in it and the tee leads to a little on-way valve that seems to act as a drain. I'm just wondering if the previous owner installed that or was it stock. My manual...

rear shocks

feeds@yuku.com (Daviddurtschi) — Mon, 13 Jul 2009 14:21:50 GMT

I've read the posts about upgrading rear shocks. I have a 82 turbo and personally, I like the feel of the ride ( I am 64!). However, my bike sat for a few years from the previous owner and the rubber boots are falling apart. I don't see any leakage and the dampen just fine. Can I just buy replacement boots and fit them on, or would I be better to replace the whole shocks, and if so, what type, for a fairly soft ride?

faring clips

feeds@yuku.com (Daviddurtschi) — Thu, 09 Jul 2009 10:04:23 GMT

getting ready to put the faring back on my 82 seca turbo and noticed that the 2 clips that hold the 2 front side pieces, both left and right together are missing. pretty sure they were gone with I took it apart. They go right under the headlight, one in the front and one at the rear, sort of behind the headlight. Mother ship says they are no longer available. Anybody come up with a replacement piece? I was thinking about sort of a heavy duty paper clip but not sure if I'd get laughed...

XJ650LJ Windscreen

feeds@yuku.com (tractorman) — Wed, 08 Jul 2009 00:37:26 GMT

Hi Guys, this is my first post and I would like to let you know that I just fitted a new screen to my bike with a wind lip that lifts the wind just above the helmet not on the visor. They also do standard style and avail in lots of colours. check it out. eaglescreens@eftel.com.au

iridium plugs

feeds@yuku.com (ken28e) — Tue, 07 Jul 2009 19:58:03 GMT

I decided to check out iridium plugs for faster starting and lower fouling. After 1 year with regular stock NGK plugs the number 1 cylinder was black fouled, not enough to affect performance but noticeable. Bike doesn't start any faster most of the time. Would have never have tested them, local bike shop $16.99 a plug. Internet price less than $30 delivered for a set of four. 1 year from now I'll report on the fouling aspect. Ken

82' yamaha seca turbo (turbo removed) questions...

feeds@yuku.com (jonshotrod2000) — Mon, 06 Jul 2009 22:54:12 GMT

hey you guys i have been reading your forums and it seems as though you are a pretty informative bunch of fellows! I reciently picked up this seca turbo on a trade and let me tell you, its far from stock. The turbo and anything related has been gutted from existance except of course the turbo boost guage lol. The exhaust has also been slightly modified to fit a single tuned muffler on the right hand side. Mechanicly it seems pretty sound and starts and runs fairly well but i am a little...

deer repel devices

feeds@yuku.com (Newturboman) — Wed, 01 Jul 2009 18:50:02 GMT

I recently was involved in a deer vs motorcycle confrontation. The deer lost and the bike was wrecked. I certainly want to avoid that event from ever happening again so I am searching for devices that repel deer and small animals which are mountable on motorcycles. The devices I've seen on-line so far range from low priced whistles to more expensive electronic units. Not sure what is hype and what is fact in the ads for these devices. Does anyone have any knowledge/experience with these...