Snakebite68

If it's anything like the Thunderace, it probably burns a certain amount of oil as a general course... It could be that you're not quite topping up as much as you think. Make sure you're topping up the oil on a level surface and that the bike is perfectly upright (ether on a pair of stands or by looking for the balancing point). My Thunderaces light comes on when the oil is a little low at high revs, but goes off again once I drop the revs again and the oil pools a bit more. It may be that yours is doing the same thing but has something else on it that's holding the light for longer... When was your last complete oil change? Even topping up regularly still ends up with week oil eventually.

Welcome in..

YZF 750R, nice! Parts for the 750 aren't cheap, always keep your eyes open for deals. The gearboxes are in demand especially by ZYF 1000R owners (ours only has a 5 speed box for some reason! lol). Welcome in...

Bit of a sucker for punishment with the imports!!! lol Welcome in...

Welcome in!

You obviously filled up too roughly for the deteriorating plastic... lol

I was about to ask if you had an inline filter... Are you 100% SURE you filled up with the right fuel?

Don't know about legality, but you'd be daft not to fit a parking brake! Without it, nothing to stop it rolling away!

Carbs are beyond me, but, out of curiosity, why do you think the bump is to blame?

Not a clue I'm afraid, I just use what fits! lol

From your 'Crude pic', even if there are helicoils on there, they don't appear to extend beyond the nut. So, I'd be more inclined to wonder if either: 1/ You're using the wrong sized socket (aftermarket / foreign plugs). or 2/ Your socket isn't long enough (aftermarket / foreign plugs). Try a different/deeper socket...

Yup, that's the bonus of those types of exhaust though, you can niggle them a bit to get a better fit. Mine is a solid one, bugger all I can do about it... 😕

Most that I've had a good look at were on E-Bay and weren't in good condition, but one was New Old Stock and pristine. Still not pretty! And HEAVY!!! 😛

Sealant for in between the different parts? Or for the manifold end? If it's for the manifold end, don't bother, just get the crushable copper washers, they're original and do the job just fine with no mess... Yeah, I like the sprung together look too, and the answer to my above question will tell me how they go together lol. I've already got an aftermarket exhaust, so it won't be as much of a difference, but I've seen an Ace with original exhaust, and they're not pretty! lol Yeah, you'd think that, but always be suspicious of anything 3rd party! Particularly if you have to paste the parts together, they may need a little fertling once you get the panels on (mainly the belly pan). Well, from what you've said, I may have to bite the bullet and save the money up for one myself now...

So you bought the one I linked? Is it really that good? Is there plenty of room between the headers and your fairing (the one I currently have on has melted a hole in my bottom fairing!!!)? Don't forget a new set of exhaust seals!

Are you talking about the link for full pipes I posted? It's £294.99, not 400... And it will fit his existing end can, so you don't need to swap that out until you want to. However, if you're interested in a new end can too, I like the look of these: Blueflame-performance-motorcycle-exhaust-and-systems (blueflameperformance.com) I'm currently trying to hassle them into doing me a twin port, tri-oval, blued titanium one. For some reason, it seems to be one of the few variations they don't offer...

E-Bay is your friend..!

Oh, you'll spend at least 1x the cost of the Ace on it! That's normal... Don't give up with the Paraffin bath idea, you've gotta dump it in there and leave it (a week or 2!). If you start cutting bits of it, or drilling, you might as well get a new one. yamaha exup ru frontpipe | eBay There's your start (assuming it's for a Thunderace), after that, you'll need the valve its self... Where about are you based?

The reason you can't find one is because removing it is one of the first things that people do with the Ace (no one ever gets around to servicing it regularly!)... But they do come up on E-Bay from time to time, you just have to keep your eye out regularly (there was actually a 'New, Old Stock' full Ace exhaust for sale not long ago!!! (It would have been mine, but I just didn't have the cash! lol)). You can't just remove it, your performance will suffer. If you want to remove it, you'll need to replace your headers. I've been thinking about coughing up for this beauty: YZF1000 R Thunderace 1996-2003 Exhaust Downpipes Headers (blackwidowexhausts.co.uk) If you remove it, you need to either leave the exup servo in place, or get one of those little electronic dooberies that fool the bike into thinking it's still there. As for freeing up the one you have. Give it a DAMN good scrub, to get any crap off it that's accessible, then immerse it in Paraffin and leave it alone for a week or two. Then have another go at it. Don't go nuts on it, it would be easy to break. Just keep working it, it will come loose eventually. Then you'll have to clean its surfaces up really nice before re-assembling it.

Welcome in!

Well... 7k revs seems pretty high, but when my YZF1000R was idling high, it turned out to be the valve gaps.

Meh, stupid regulations...

How do you lose a camping licence??? Have field, will camp..!

Yo..!

Not a mechanic, but... The key is to figure out EXACTLY where the smoke is coming from. Try smothering it in soapy water and look for the bubbles, that will give the mechanical guys more to work on!