Toyota SC14 Superchargers,

[locote]

Any one heard of a Honda using one of these??
they are designed for a 2lt+ motor, how would a B18 react to one of these.
they can be picked up for 350.
ive seen a few corollas making decent power with these.
What do you guys with knowlege of F/I hondas think??

[Weq]

2 small. 2 hard to mount etc etc.

[locote]

it could be fitted and mounted in the spot were the aircon is....
sacrifice the aircon for a S/C . they look round same size and the same belt can be used to run it.

[vonarx]

Hi Guys

Did you say 350 for the toyota supercharger, am interested in picking up one to mod into my CL7

[yourfather]

Any one heard of a Honda using one of these??
they are designed for a 2lt+ motor, how would a B18 react to one of these.
they can be picked up for 350.
ive seen a few corollas making decent power with these.
What do you guys with knowlege of F/I hondas think??

I know a friend that's bolting one on to his MR2

Seems to be pretty confident in getting some decent results.

[joyride]

hes bolting it on an MR2 maybe because the s/c came from a toyota to begin with.
think mcfly, think!!

[yourfather]

well.. rather than being insulting. I'd prefer constructive criticism.

I am well aware of who makes Mr2's and who was the manufacturer of the supercharger.

I just pointed out that a friend is bolting it onto his MR2.

No need to get the knickers in a twistie

[Weq]

well.. rather than being insulting. I'd prefer constructive criticism.

I am well aware of who makes Mr2's and who was the manufacturer of the supercharger.

I just pointed out that a friend is bolting it onto his MR2.

No need to get the knickers in a twistie

Engine charactoristics all different across all models. VE is also different. Toda has explained this before, but one turbo or s/c created for another car, will not work the same on every other car.

Honda's are very efficent. USually we run compressor setups made for x2 to x3 the engine capacity. Also remember a compressor create for a stock engine will focus on driveability and low torque as this is whats needed in a production car. THis does not suit a honda engine. Honda's also produce alot less low down torque (hence vtec) and having a supercharger take away whatever is left makes for even a lesser driving experience.

Another thing is just because a s/c looks to be able to mount, doesnt mean it well. Belt tensioning, driveline rations and many other factors need to be considered. I can tell you now, making a proper blow mount as a hond job will NEVER work unless u are experienced int his area. There is a reason why jackson racing have used eton blowers so much inthe configuration they choose.

Another fact to consider is blowers will wear out alot quicker then turbos. 2nd hand s/c will become expensive real quick this way.

[yourfather]

THanks for the info Weq..

And yeah, pretty much from what I understood prior to your post, and it was confirmed by it. Is that the superchargers arent good for honda engines because of the volumetric efficiency. Which is why you can run larger blowers (whether turbo or super) on a honda engine easier.

Plus, as has been posted in other threads before, there's no way to get cheap forced induction, and the main reason behind the person first asking this question was because of the cheap cost of the actual blower unit.

[Weq]

u can get into it cheap. My first turbo setup set me back ~3k tuned and i could of done it for alot less if i knew enough/set lower goals.

THe correct statement should be, u cant get into forced induction cheap, without dedication and reasonable goals! I researched for a whole year before i went turbo. 8 months of research and learning off anyone i could, WITHOUT posting a single thread. Everything has been covered before...

[shmivic]

an sc14 on a b18 = no good,

why?:

sc14 chargers are from 1ggze toyotas, a engine which revs only to 7000rpm,
the sc14 blowers run at 1400rpm higher than engine speed ie: motor at 7000, blower at 8400rpm,

factory vanes and bearings cannot handle speeds above 9000rpm blower speed which means that on a b18c revving to 8500+rpm the blower would be running at 10100rpm

so you will lose boost at anyware above 7500 engine speed region. not good

[VL_Commy]

Wouldnt that have alot to do with the diameter of the main drive pulley on the crank?

Ie. The larger the crank pulley in proportion to the blower pulley, the faster it spins. Much like gears on a pushbike

[aaronng]

Wouldnt that have alot to do with the diameter of the main drive pulley on the crank?

Ie. The larger the crank pulley in proportion to the blower pulley, the faster it spins. Much like gears on a pushbike
:thumbsup: But if you drive the SC 1:1, to keep within the maximum SC speed, you might not build enough boost to compensate for the parasitic loss. Imagine losing 15% of power at 2000-4000rpm, that would make drivability worse than a large turbo.

[VL_Commy]

True true. BUT, although this would wear the blower out faster, the sc14 uses an electric clutch. Simply wire the clutch up to a RPM based signal. Once you hit 4000rpm, blower solonoid engages and blower spins. From idle-4000 solonoid sees no power hence free spins much like your standard aircon when not in use :).

This could also be used in reverse, for shutting the blower off at higher RPMs.

[Terrible One]

Don't forget that the rotors in these things are teflon coated which means at very high blower speed it is prone to melting and causing all sorts of havoc.

[BlitZ]

I know a friend that's bolting one on to his MR2

Seems to be pretty confident in getting some decent results.


eheh if this is the older Mr2's.. they came as STD on upper spec (not audm) heheh..
4agze...

[BlitZ]

I have actually been thinking about this concept for awhile..

however i have come to a conclusion that a 350 supercharger may sound like a good idea... howeverr you would loose Air con, custom mounting plate. re-routing piping, making sure the ratio are correct, plumbing oil ETC etc.. it would cost over 1.2k.. and yet it still wont run as well as a turbo..

[nd55]

[Warning: armchair mechanic in the area...]

Not one to dig up old threads, but no one has mentioned that old Honda's, eg B and D series are unique in that they spin backwards comapred to other motors.

Apart from all the other issues, special reverse spinning snouts have to be sourced.


Nick.

[VL_Commy]

sorry to dig this up again, just saw the last post. these toyota blowers can be run in either direction. If you know the way these roots type S/C operate, you'll understand why.

All that will change is the inlet and outlet will swap.

[Limbo]

I rem when i was into 4gzes. They have instant grunt straight from idle but would loose power above 6,000rpm. When looking at the B-series engines you don't really start getting any real power until you hit vtec at about 5,400rpm.

When you think about it with a gutless wonder of a b-series engine is, the super charge would kill you low down and when your about to make power rob you of the ability. They are generally good for engines with large torque low down and not much power high up. i.e low revving engines.
THat's why alot of V8s run them.

THe 4gze in the MR2 & corollas were something of unique creation

Also a SC is prone to burning out. I know my mate's gze had some issues when he put a larger pully on. You start to run out of gears down the quarter also. Its great for short tracks but not so good for 1/4 runs as the SC ran out of puff