turbo on a 400?

[TUG]

been toying with the idea of maybe a turbo or super charger on the old fzr4, its a keeper so i would like to maybe up the anti on the 400s power with a booster rather than lug the engine out for a 600 and all that.
if i was to put either on what work would need to be done?
remap the cdi? re jet the carbs? renew the engine a lil?
any info would be great.
thanks.
____________________
Haz ER-5, innit!

[Paddy Blake]

It might not be the info you want but will save you money.
Just get a bigger bike.

Paddy.

[TUG]

i will do, but like said, the fzr is worth nothing to no one other than me. so i would like it to be a bit more powerful, not right away, i've spent so much time and money on it to sell now anyway, it would be pointless to sell it for nothin.
____________________
Haz ER-5, innit!

[hmmmnz]

you'd be better off reboreing it than turbo or supercharging it,
you'd have to throw a fortune at it and lots of time to get a turbo or super charger running smoothly,
even reboring it would cost more than buying a 600cc engine and making that fit, you could sell the 400cc engine and recover some of the money buying the 600cc engine.
or if you were feeling really keen, the 1000cc engines seem to go for cheaper than the 600's muhuhahah
it would probably be a mission squeezing it inthere and probly would require strengthening of the 400 frame and possibly new brakes,
but anything is possible if you're keen enough
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[TUG]

maybe buying a 600 and .......
turbo that?

to be honest with you i'd just like to give my fzr that stupidly insane boost of a blower. i know its more logical to buy a bigger bike/engine, but to be honest am keeping this bike so anything bigger i do get wont last as long as my fzr, and my soon to be CG.
i'm more keen to do it after i read the vfr800 thread, i saw a turbo on a 400 with 600 engine etc that he did and it looked great but like i said after reading the vfr800 one its made me want to do it more.
i just want the 400 engine to produce a better bhp with the turbo.
something to do lol.
____________________
Haz ER-5, innit!

[bladerunner]

Have you thought about fitting Nos..A few hundred quid will see good HP gains and you can fit it on your next bike as well. The cost of fitting a bespoke turbo/airbox.intercooler/exhaust etc aint cheap and you dont have an awfull lot of room on a little 400 to play with either. Not to mention once you sell the bike It's money lost.

[TUG]

[Big Pete]

technically possible, practically difficult. To get any sort of decent performance you are going to need a a tiny turbo unit, something like the IHI RHB5 unit that was on CX500 turbos. Then you need a custom inlet manifold, exhaust manifold, possibly new carbs, ideally an intercooler (depending on boost level), ignition remapping is prolly a good idea, and you may need an aftermarket ignition unit depending on the spark voltage the current setup produces.

If you did all that and pushed it hard, you might get as much as 100% more power, which is going to put you into modern 600 territory. That prolly means a new heavy duty clutch set, maybe reworked gearbox internals, bigger rad, bigger oil cooler, maybe bigger oil pump, sump spacer, maybe clutch cover spacer, low compression pistons/head work, maybe cams.

If it was mine, I'd stick a 600 lump in, its simpler, its going to be more reliable and spares are easier to get hold of.
____________________
Trust me, I`m an engineer
GarageOfPower.co.uk

[NSR Mick]

[Kickstart]

Hi

The FZR400 engine is not known for being strong, let alone when tuned. Nor is the FZR600 engine (which had a regular habit on throwing rods out of the cases when they raced them). Bolting a turbo on would make them about as reliable as a cardboard submarine.

If you did turbo it then it would be a massive amount of work. A turbo would be required, all the exhaust manifolds, inlet manifolds, probably an intercooler (not sure where you would fit that), sealed carbs (with the float bowl vents going into the manifolds so the float bowls were pressurised by the same amount as the intake air), reduced compression (either bodged with a spacer plate or with some custom low compression pistons), programmable ignition timing, higher pressure fuel pump, almost certainly stronger rods to take the extra load, heavy duty clutch, etc.

Realistically you would land up with something that cost far more than a pretty new R6 yet was slower and heavier, with a dubious power delivery.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[hmmmnz]

[TUG]

if i did that then its beating the whole 400 cc thing, on the other hand, if i didnt fit a turbo what other performance mods could i do that wont throw my rods through the side? some one mentioned nos before, what work would i need for that?
keep the suggestions coming and thanks everyone.
____________________
Haz ER-5, innit!

[Kickstart]

Hi

Any serious tuning is likely to throw the rods through the side (a decent blueprinting job would probably gain power and reliability though). Although NOS is a hell of a lot cheaper and possibly easier to set up from scratch than a turbo (although you will really struggle to find an insurance company to touch you with it).

For very rough idea of costs, a turbo kit from Big CC Racing would start at about £4500. OK, you can save a bit of money sourcing 2nd hand bits, but you can also add a load to the cost by having to get one off manifolds designed and made. Spending at least 5 times the value of the bike is not really a good idea.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[hmmmnz]

nos is notoriously bad for engines as it causes the bike to run lean unless you can up the fuel while the n20 is being injected.
then you have the problem that its really stressing the engine,

you could lighten all the connecting rods buy stronger lighter valves. ect ect, there is plenty you could do, but really the increse in proformance will be minimal.

c'mon, throw a couple of hundred at it and put the 1000 in it
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[TUG]

lol hmmmz, i dont want to on THIS 400 maybe if i was to buy a 3tj or something, then i would be extremely tempted to fighter it.
1000 fzr engine,
turbo,
nos,
etc.
but looks like i'm better off just havein my engine blue printed maybe have my head gas flowed and my valves upgraded for stronger ones and new pistons etc.
____________________
Haz ER-5, innit!

[TUG]

keep throwin in the suggestions though, its a good read this.
____________________
Haz ER-5, innit!

[Kickstart]

[TUG]

yes thats true flinging a fzr 600 in would be great, but i dunno if that engine is ok or not, also, my bike would be a fzr 600 then. but i dunno i'm kinda toying with the idea, if blueprinting gives more reliability then i'd be happy to pay out. my inlet valves will need replacing soon anyway, and this winter i need to do my gear box and valve clearances.
thanks alot for the input everyone, any more ideas?
____________________
Haz ER-5, innit!

[NSR Mick]

It cost me less than £300 to get the 1000 into the 4.

I did have a slight advantage though. I had both bikes complete so had all the loom, cdi and carbs etc allready.

Most of the cost was getting a good welder to lop off some of the engine mounts and re-weld them so they would line up with the 1000's mount points.

One of the rear mounts was a perfect match for the 1000 so I didnt even need to touch that which helped a lot.

I'v even found a pic of it. Forgive it looking tatty as hell, that was taken in it's very early stages. I did end up fightering it.

https://i8.photobucket.com/albums/a50/micklivesey/old%20bikes/LookingTattybutallThere.jpg
____________________
If you dont like the way that I ride.......Stop trying to keep up!!!

[TUG]

how could i strengthen the frame if i was to put a bigger or highly tuned engine into my frame?
____________________
Haz ER-5, innit!

[Kickstart]

Hi

If it is a definate keeper then think about it. It will add little to the value though, and power gains will be small.

As a keeper the money would be better spent on buying up decent stocks of easily damaged items, such as fairings, headlights, cdi units, etc. Engines will be readily available for far longer.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[NSR Mick]

I think the 400 is ok with a 6 in it.

Mine went pearshaped because one of the engine mounts came loose and it twisted it.
____________________
If you dont like the way that I ride.......Stop trying to keep up!!!

[JaysonM]

I'd like to advise you 1000 cm3 volume! [email protected]

[Kickstart]

[TUG]

lol whey gixermick! welder not hot enough? kickstart, i bought some new fairings a while back in near mint condition, and i already have my ones i have on now althought they are very shagged! i should get a set of spare rims and different tyres for differnt weather situations or just for spares. i was going to R6 the fzr 4 but changed my mind after buying the original fairing.
maybe i should have it blueprinted with a few more mods hmmm
____________________
Haz ER-5, innit!