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-   -   Bisimoto quest for the world's first boosted GK (https://www.fitfreak.net/forums/3rd-generation-2015/84504-bisimoto-quest-worlds-first-boosted-gk.html)

Myxalplyx 11-27-2014 04:08 PM


Originally Posted by Bisimoto (Post 1280031)
I am a bit confused to your 30whp comment. The factory fit makes 130hp (113whp) to the crank, and I was able to extract 151hp (129whp) with modifications, which did not involve manipulation of the factory ECM. Exhaust mods, indexing of spark plugs, and advanced synthetic lubricants (yes, oil is performance adder) where my changes to the spec Bisimoto Fit.

Very good information. In the SEMA Modifications thread, it lists this -->
NGK Iridium Spark Plugs
PurOl "Elite Series" Synthetic Motor Oils

Since it says you used 'Oils', I take it you used the PurOl oil in your engine as well as your CVT (PurOl HCF-2 CVT fluid). Is this correct?

I will be ordering some 0w-20 Amsoil oil and Amsoil CVT fluid later today.

lakia5524 12-02-2014 08:26 PM


Originally Posted by Bisimoto (Post 1280031)
No need to cut or modify anything, with the pulse chamber. It is much lighter than the factory muffler (bonus), and comes complete with all hardware and bolts. Thanks.



I will provide more clarity, somewhat redundant:

I am a bit confused to your 30whp comment. The factory fit makes 130hp (113whp) to the crank, and I was able to extract 151hp (129whp) with modifications, which did not involve manipulation of the factory ECM. Exhaust mods, indexing of spark plugs, and advanced synthetic lubricants (yes, oil is performance adder) where my changes to the spec Bisimoto Fit.

In addition, it is apples to oranges to compare multi point (port) fuel injection to direct cylinder injection as the requirements for fuel (power and safe lean economy) change dramatically. With DFI, you could run as lean as 14.0:1 in boosted applications, and as lean as 17:1 in cruising for optimal economy...safely, I may add. The "plume" formation in the combustion chamber, aided by the unique DI friendly piston top shape, also lends to this phenomenon.
With that in mind, this is what a factory GK fit depicts:

http://i4.photobucket.com/albums/y14...pskdu22xot.jpg

You could even clearly see the torque depressions in the lower RPM ranges due to relatively "richer" mixtures, and the VTEC crossover up top. The iVTEC also has some pronouced effects.
I hope that helps, and clears up any misconceptions.






I am glad to finally see this done with the fit after the crz, could the fit be pushed even more with higher grade internals ?

I was not able to find any video on this boosted fit is there any footage out yet??:thumbups:

Bisimoto 12-03-2014 02:50 PM

6 Attachment(s)

Originally Posted by Myxalplyx (Post 1280108)
Very good information. In the SEMA Modifications thread, it lists this -->
NGK Iridium Spark Plugs
PurOl "Elite Series" Synthetic Motor Oils

Since it says you used 'Oils', I take it you used the PurOl oil in your engine as well as your CVT (PurOl HCF-2 CVT fluid). Is this correct?

I will be ordering some 0w-20 Amsoil oil and Amsoil CVT fluid later today.

My gearbox is a 6 speed, and yes, I use PurOl Elite Synthetic 0w20, which, is vastly superior to the beand you mentioned. You should give it a try and become as excited as I was when I compared the two.


Originally Posted by lakia5524 (Post 1280808)
I am glad to finally see this done with the fit after the crz, could the fit be pushed even more with higher grade internals ?

I was not able to find any video on this boosted fit is there any footage out yet??:thumbups:

Of course.
Footage coming soon: as soon as I get them back from touring dealerships.

Back to the thread:

Engine pulled, and ready for surgery:

Attachment 13050

Cam covers off:
Attachment 13051



Head off:
Attachment 13052

...notice the "crater" in the piston to assist in creating the ideal plume for the direct injection system. That would be elimnated for my retrofit to multipoint fuel injection.

Meanwhile, my team was prepping the chassis, and building the 6 point cage:
Attachment 13053

Attachment 13054

Cage Dropped, for full 360 degree halo welds:

Attachment 13055


More to come.

lakia5524 12-04-2014 03:06 PM


Originally Posted by Bisimoto (Post 1280917)
My gearbox is a 6 speed, and yes, I use PurOl Elite Synthetic 0w20, which, is vastly superior to the beand you mentioned. You should give it a try and become as excited as I was when I compared the two.



Of course.
Footage coming soon: as soon as I get them back from touring dealerships.



http://i4.photobucket.com/albums/y14...psmxshkmxb.jpg


More to come.

When doing these Honda builds do you usually keep stock oem coil packs? What number of cold plug did you have to use?

Do you know what numbers in weight reduction we are looking at compared to stock?

I am also curious what the suspension is like with it being lowered, compared to stock, I like the lowered look but I am not sure how comfortable it would be?

Cant wait to see footage !:thumbups:

13fit 12-04-2014 08:26 PM

Ill attest to oil as being a performance adder. My car ran better quartermile times after 2 changes of honda dealership black bottle oil, and third change got Mobil1 AE 0W20 with a Zinc additive tossed in. Took one or two full fuel tanks worth of driving to really shine.

Myxalplyx 12-07-2014 11:16 AM


Originally Posted by 13fit (Post 1281082)
Ill attest to oil as being a performance adder. My car ran better quartermile times after 2 changes of honda dealership black bottle oil, and third change got Mobil1 AE 0W20 with a Zinc additive tossed in. Took one or two full fuel tanks worth of driving to really shine.


What were your before and after 1/4 mile times that you got with only a change of motor oil?

13fit 12-07-2014 08:56 PM


Originally Posted by Myxalplyx (Post 1281362)
What were your before and after 1/4 mile times that you got with only a change of motor oil?


Im pretty sure the oil adjustment was before installing the custom velocity intake and also before finishing the exhaust (I believe it was weaponR decats with stock exhaust).

I put put rough estimate of before at 16.7 and after oil took effect (roughly 4-500 miles of driving) I think it yanked it down to a 16.62 or so.


I run consistently with my car, One of the nights where I had not changed anything in the car for over 1,000 miles, I ran 9 or 10 runs all within 0.15 of each other. This was after 6-7 runs where everything was getting full heatsoak, tires were where they were gonna be (pressure, heat, traction), ecu probably made its own adjustments, etc...

My fastest run ever was much better, but I may now not get a chance to see the 15s, as good paying jobs are not in my area and available (currently unemployed)

Myxalplyx 12-10-2014 02:42 PM


Originally Posted by 13fit (Post 1281423)
Im pretty sure the oil adjustment was before installing the custom velocity intake and also before finishing the exhaust (I believe it was weaponR decats with stock exhaust).

I put put rough estimate of before at 16.7 and after oil took effect (roughly 4-500 miles of driving) I think it yanked it down to a 16.62 or so.


I run consistently with my car, One of the nights where I had not changed anything in the car for over 1,000 miles, I ran 9 or 10 runs all within 0.15 of each other. This was after 6-7 runs where everything was getting full heatsoak, tires were where they were gonna be (pressure, heat, traction), ecu probably made its own adjustments, etc...

My fastest run ever was much better, but I may now not get a chance to see the 15s, as good paying jobs are not in my area and available (currently unemployed)

Thanks for the details. I appreciate it! Haven't changed oils yet though. Focusing on another item at the moment.

Myxalplyx 12-10-2014 02:43 PM


Originally Posted by Bisimoto (Post 1263294)
No problem whatsoever! No EGR or O2 codes...I did my "homework". It was not easy, but we were successful.


Whatever you did to eliminate this, I REALLY need to know now. If you sell this piece or you are just willing to share this info, please advise. I am trying to have a piece that eliminates the cats installed as I'm typing this now. Thanks for ANY information.

Bama3Dr 12-10-2014 03:37 PM


Originally Posted by Bisimoto (Post 1280917)
My gearbox is a 6 speed, and yes, I use PurOl Elite Synthetic 0w20, which, is vastly superior to the beand you mentioned. You should give it a try and become as excited as I was when I compared the two.

Bisi, would you or anyone else have a source for buying the PurOl by the case or maybe jug? I found it for sale online, but only in 1 quart/liter bottles. I'm thinking I'll give this a try at my next oil change.

Thanks

Jim Grames 12-20-2014 09:38 PM


Originally Posted by Bisimoto (Post 1263287)
That is a factory based team, with possible ECU access...not a privateer. Obviously a team much bolder than me, as at a boosted 189whp, I would be terrified, based upon my failure analysis, of the factory L15B1 rods. The stock rods yield at very low cylinder pressure values in comparison to the rods of the past. With the new earth dreams criteria, it makes sense. Mass/weight is the enemy.







Right here:


http://i4.photobucket.com/albums/y14...psdlalgwxv.jpg


At 113whp, and approximately 100ft/lbs of torque, it is an impressive 1500cc powerplant.


http://i4.photobucket.com/albums/y14...pstvaahmrd.jpg


The above is the air fuel ratio chart of the full sweep. At partial throttle, the ratios hover in the 15.1 to 14.8: 1 range. I see tons of opportunity for a flash to provide improved mileage...and power in the full power regions.

Bisimoto - On the stock 15 fit does the torque really drop like that at 2200-2300 rpms? Do you have anything that shows torque and hp from idle? Thks.

1SickVeilsideZ 12-21-2014 12:49 AM

Looking through some stuff earlier and not sure if anyone's seen this or not:

Bisimoto Pulse Chamber, 2015+ Honda Fit | Bisimoto Engineering

13fit 12-21-2014 01:30 AM

Skip that exhaust bit. Not worth the money

cypresser 12-22-2014 09:46 PM

bisi,

weights of seats and race weight? any na intake/ tb upgrade in the near future? full na exhaust no cats?

also what exact fluid used for the mt?

Twincammedfit 01-21-2016 03:42 AM


Originally Posted by Bisimoto (Post 1279954)
No worries. That translates to 180-200whp, without much margin for tuning error: no crazy detonation, over revving, or lean mixtures.

This is another photo that may shed some more light on how puny the factory rods are:

http://i4.photobucket.com/albums/y14...psotnuwz2n.jpg

Factory on top of Bisimoto!

Mr Bisimoto... I'm thinking of doing a small T25 turbo @ 4-5 lbs of boost just to give it more balls. Is this doable without tuning and maybe running the Acura RDX 410 cc injectors? Also, will you be selling a catless downpipe for the GK5. I removed the Secondary cat and noticed a substantial difference in power along G with a custom 2 1/2" exhaust going I to a stock civic SI muffler. A catless downpipe would be great till I get the turbo setup ready. Please advise. Thanks

devmail 02-13-2016 09:10 PM


Originally Posted by Bisimoto (Post 1262079)
Greetings,
Just wanted to share my love for the new 2015 Fit, and the crazy project coming out of our stables.
I have always had love for the Civic WagoVan, and built a 724whp one a few years ago to prove a point.
http://i4.photobucket.com/albums/y14...ps874a606b.jpg


http://i4.photobucket.com/albums/y14...stPwrDec09.jpg


The fit has a similar feel for me, and I plan on building something powerful, reliable, and not as laggy as the wagon from a few years back.


My racing background focused mainly on naturally aspirated powerplants, and hence, I have tested, and developed a few goodies for the new GK5 platform. Contrary to belief, this powerplant has tons of potential...one I plan on exploring.


My base vehicle is a black 2015 EX, with a 6 speed manual:


http://i4.photobucket.com/albums/y14...ps2e030c45.jpg


Very quickly, the chassis (after baseline dyno testing) experienced an interesting teardown session:


http://i4.photobucket.com/albums/y14...psfecb7b5e.jpg


The interior was not spared....with eyes on a race spec steel rollcage:


http://i4.photobucket.com/albums/y14...ps50a36a97.jpg


As an engineer, I take my builds very seriously, despite the base vehicle. My team and I can even test many of the parts using FEA and CFD analysis. Here's the laminova intercooler air velocity and vector chart at approx. 1200CFM.


http://i4.photobucket.com/albums/y14...ps5c74ceb2.jpg



More to come!

Awesome work bisimoto! That wagovan is one of my favorite hondas!

Do you make any intake manifolds for the GD3?
Thanks!

mike410b 02-13-2016 09:21 PM

^Nope.

If he did they'd be custom to your build.

And by custom I mean mass produced in China and sold at 'custom, one-off' pricing.

kylerwho 02-14-2016 12:21 AM

All his builds use golden eagle intake manifolds. No options for gd3. I believe there was a prototype for the crz.

KentFinn 02-14-2016 08:22 PM

Nearly off topic, since the tech stuff here is way over my head and far beyond my financial means, but it seems to me the the turbo charged Civic 1.5 l engine is essentially the same as the stock 1.5 l Fit engine physically. For a less ambitious project, how easy would a direct swap be?

mike410b 02-14-2016 10:05 PM

The physical size potentially could work, but the electronics would make it incredibly difficult


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