Not updated for a while, so here it is.
Engine time!
Was looking round for a nice 1127 motor to do the usual 7/11 fighter bit. Located a motor and went and picked it up.
Motor got, all looking good.
Dropped the sump off:
Took the sprocket off, not so good...
Threads fooked on the shaft, splines worn on the mainshaft
So, called the guy. He's a decent dude, offered me another gearbox or another engine. I went for the engine. Last thing I wanted was an engine rebuild when I'd already got the bike in bits, so with the news there's also been a porting job on the replacement engine, off I trots for another 165-mile round trip to collect engine number two.
Porting didn't look too good, but not too bad. Really couldn't look at the engine as I'd dropped the one I was taking back on my foot while loading it and it was bloody killing. I just wanted to get home and rest it.
So, same as before, top end like new, little worried about the sealant though.....
Front of the engine wasn't quite so nice......
So, I pulled it to pieces, this came out of the sump:
Not all the crap, just the silicon sealer.
Clutch torqued to correct Suzuki settings, although their chisel wanted calibrating as I thought it felt a little loose...
This was the game-changer to be honest:
And also the point at which I took a long, hard look at what I've got.
Now, I've no gripe with the seller AT ALL, need to make that clear, bought from him before, have no qualms buying from him again. If I had an issue it would be dealt with out of the public domain. I know buying any 20-odd year old motor is a risk, but the heart of the motor is fine and to be honest, after 20 years anything's ready for a service/refresh, I also consider what I paid for it a fair price, so had the option to break it and get my money back if I wanted to go that route.
I decided I would tidy the ports, skim the head, throw it in the chassis and do Straightliners 10.1 class. But that's where my bucket list came in. I've never done a 9 second run. A plan was hatching that a fresh 1127 ported, skimmed *might* get me there...
After jizering and cleaning the cases were worse than I thought:
So I bit the bullet and had the cases, barrels and head vapour blasted. £180 later and we had these:
Another £55 later and I have .30thou" off the head (which will come back and bite me on the arse later):
Then set about the ports:
Opening them up and matching them for the 38mm carb rubbers as well:
That is work in progress by the way...
Then, just as I was contemplating the virtues of a 1216 torque-o-monster block, this turned up on that online auction site with a BIN close to what had been discussed on an earlier OSS Facebook thread, I jumped in with a lower price than was offered, a call later and offer outside the auction accepted and a 280 mile round trip to Blackpool got me this lot in a free box:
Unknown and brand-new turbo (except it says VOLVO on it...)
And this half-finished (or half started) plenum with some nice welds and shapes I couldn't make:
Ohh, and a box of bits; Bosch fuel pump, scavenge pump, WG:
I was also offered these Busa bits as well for an extra £50
Well, be rude not to. Theory was if it was all shit I could split it and got my money back, no risk.
Well, was all so last week. I put the motor in the frame as I needed to see how low the turbo would hang. I knew it was low as the manifolds are longer than the one's I'd seen on other bikes.
Fitted the (unclocked) turbo and headers. The oil cooler brackets will need a tweak and the (newly powdercoated
) bottom oil cooler bracket will need serious fettling, but other than that it's no shabby job (pic further down).
Pin stopping the clock on the hot side:
Split:
Pin out:
So, now half-clocked. My circlip pliers are nowhere near good enough to remove and spin the cold side so that;ll wait for another day...
If anyone's an idea what turbo it is, please send me the answer on a stamped-addressed envelope....
Thought that while I was having such a good time I'd have a look at the plenum. Obviously it needed finishing, just wasn't sure if it'd fit in the frame. Fortunately it did:
Got some ideas here, thinking another tube below making a twin-swirl chamber. We'll see...
So, this is where we are as of 22 December. Today I have been fitting the (Cleaned) Busa rods and pistons to the crankshaft and getting the motor ready for the two halves to be mated.
So, never turbo'd a bike before, no experience of turbo systems on bikes, although I have been twiddling spanners since I served my apprenticeship (god, remember those) as a spanner twirler so as Mr. J Bond esq. (probably) said "it posses no great problem miss Moneypenny" and I put a Renault 5 turbo engine in a Renault Twingo. Which was very much fun....
I'm going for a scavenge oil system, feeding the oil back in at the plug by the alternator and like I said earlier, a sort of twin swirl "8" shape plenum rather than firing air straight in. I'm probably over thinking things but it'll be my work rather than sheeping. I
may will be asking many questions cos this is pretty new to me.
Thanks for looking.
Simon