fj1200 turbo "thug"

[Dan Filetti]

Excellent!  Glad to see this Fraken-bike fire up!  The sound is excellent.  Is that the turbo spinning sound I hear?

Dan 

[backstreetheros]

yeah the turbo seems to spool up nicely in the middle of rev range.
i did find out as soon as the oil pressure builds up it fires the clutch push rod (including all your new oil) a foot out the side of the engine... no wonder i couldnt find the clutch slave cylinder... i dont have one!! anyone got one for sale?
ive booked up half of my 4 day bike test for next week as i wont be able to ride it without it!
tank is done and im working my way through the fuel lines...
my oil pump puts out way more pressure than my turbo can handle so have to make a bypass to stop the pipes exploding.
i also need to find a suitable boost pressure switch to trigger the ignition retard under boost. a handy feature of my dyna 2000 ignition!
more progress soon...

[Havoc]

I also had a 'bugger', 'starting the motor up without a clutch slave' moment. On my nieghbours newly laid block paved drive, a nice 12' line of oil, she wouldn't let me use my power jet cleaner either, 'cos of distubing the sand beneith the blocks. Hand's and knees with a scrubbing brush. It was at that precise moment I decided that the FJ oil pump pressure would be fine to feed a plain bearing turbo and an aux head cooler. Got a spare slave by the way, where are you?

[backstreetheros]

haha i know exactly what you means by "bugger!"
have you increased the amount of oil in your motor? seeing as more is being taken away from the sump while running?
this was my main concern as to turbo oil cooling and my huge oil cooler.
hence why i went for a completely seperate cooling system. and the turbo i used is standard journal bearing subaru impreza so easily available for £40 if i screw it up!!
im in England.
how much do you want for the slave? where are you with regards to postage? 
i was gutted to see i didnt have one!!!
luckily where i started the bike it didnt matter too much about oil spillage!

[backstreetheros]

nottingham sorry... i clearly didnt see your profile thing...
im in west dorset, bridport to be precise.
how much do you want for it? i don't have any suitable swapping items really unless you need anything plumbing.
we will one day have to have a drag race you know that you'll definatly win!!

[backstreetheros]

here is a picture where you can see the two oil coolers.
if you look closely you can see the pipes i had made up for the front oil cooler (inc the extra long one to avoid the exhaust manifold)
once all the brakes are done and working, clutch and the turbo oiling system fine tuned i'll take it to my bike shop to get a chain fitted so we can see what it rides like. i'll try get a video of that too.
still a way off but would like the bike to be on the road by next summer so i can take it to a few shows!..
i might do a completely seperate write up on getting it through an MOT!! 

[backstreetheros]

[backstreetheros]

spent the day doing the bike today...
one big step forwards and one giant leap backwards to report!
i managed to get the brakes working after struggling to bleed them and then getting a power bleeder from a friend to complete the job.
a friendly mechanic i know gave me a rear brake resivoir as i couldnt find one anywhere in town and he replaced his, no idea what bike its from.
after half of the day of bleeding and unsticking things i got it all working correctly 
after this i thought i'd make up the bypass for my turbo oil cooling system.
did this, filled it up and eagerly tested it... its bullshit.
the pump was too powerful before and now just dies on the thermal overload as too much resistance trying to move thick oil.
i now have to drain all of this and rip the lot out.
i suppose this is what you get for trying to do something different.
i think the solution is to get another oil galley plug from randy, use this to take a oil feed to the turbo and then pipe it back down into the clutch cover as a return.
i could have kicked the bike over when the oiling didnt work haha 
oh well live and learn...
i'll have to buy some new bits and rip out all the crap i've done aswell.
got a load of stuff for sale now if anyone needs it?

[musicman]

On the turbo, you'll probably want to run engine oil for that side of things rather than a separate system. Turbo's don't like a lot of oil, on my Camaro the last setup I used was a 3an feed line and a 10an drain. You want a good quick gravity drain, no sharp corners, no 90* angles, etc. And you want the drain to be above oil level usually. Also I'd contact the turbo manufacturer, some turbos need a restricter in the feed line, otherwise they puke past the seals and you get a nice mess. Never turbocharged a bike before, though it would be fun to do someday. You might also think about ditching the 4 carbs in favor of a single large one pre-turbo mounted at the inlet. Something like a weber 2 barrel or something, might be worth looking into.

[Havoc]

I agree with Musicman, just drill and tape either of the gallery plugs left or right side of the motor to take brake line banjo bolt, see my head cooler feed. Feed using some braided brake line, about 2-3mm internal diameter then drain back in using a larger diameter line. You turbo is well high so gravity feed return will work well. If you want to go a more expensive route Pirtek do adaper plugs to fit Earls type lines though you'd want to restrict flow somw what, less important though with your plain bearing turbo than a Ball Bearing turbo. I'll not have an oppertunity to get up the shed to finf the spare slave until the weekend I'm afraid, stoopid busy at work this week and no  power in there for light.

[Havoc]

Disagree about going draw through though, stick with the blow through, works fine with CV's if the pitot is right. Early XJR slaves should fit and are easier to source if I can't find my spare.

[fj11.5]

Big katana fan, and i must shay  thatss an awesome kat  ,,, and she isn't even  finished, fj engine   looks at home

[backstreetheros]

i am sticking with blow through for rideability. it'll just ride like a normal fj before the turbo spools (almost!)
the turbo im using already has a restrictor built in hence why my seperate system didnt work.
i was bidding on some fj clutch and oil pump covers on ebay with windows but i wasnt willing to pay that much! fair play to whoever won them!
i think i will tap the galley plug myself as this will be alot faster than ordering randys (postage takes ages from america!)
where did you put your drain into havoc? i was almost tempted to just tap it into the oil filler cap?! saves drilling holes!

[Havoc]

I welded a boss for a fixing into the sump, I've got a pump assissed drain though as I feel my turbo is just slightly too low. I'd gravity feed yours back above the oil height, into the oil filler seems as good a place as any. You're not 'Falmouthgrove' by any chance are you, sold my sidewinder copy pipe to someone down your way a while back and I noticed a bid on my DYNA2000 from the same name? It's the long forks got me thinking.

[racerrad8]

i think i will tap the galley plug myself as this will be alot faster than ordering randys (postage takes ages from america!)
where did you put your drain into havoc? i was almost tempted to just tap it into the oil filler cap?! saves drilling holes!

Be careful tapping the stock galley plug. They are cast aluminum and I have seen several failures of those plugs when they are tapped as there is not much material to work with. The drilling & tapping takes away so much material the plugs can crack/split and then it pumps all the oil on the ground and under your rear tire.

If you order with USPS priority service you will have it in about 7 days.

If you still need that slave cylinder I have them in both colors, I can add the galley plug as well.

Do you know if you have the fine or course thread oil fill cap? If it is the fine one I have a cap that I removed from a customers engine years ago that has a 5/8" nipple pressed into it. I will throw that in the box as well.

Randy - RPM