WOW, beautifully flat torque curve. With the 6 speed sequential box and a low max speed that looks bang on the money. If you don't mind me asking, what was lag like?

 

Google how does gearing affect turbo spool times and u will see many post again google is mans best friend it even states that tire size can affect it cause its affecting the load and the speed. Ever heard of when installing bigger wheels ur speedo will be off? Y cuz it takes more revolutions per wheel for a smaller wheel to go the same distance as a bigger wheel duh

 

EFR- They do have a hell of a lot of hype associated with the launch. However they are full of some very sexy gear. The only issue I have with them is the ceramic bearings... which will stop me having bang bang

 

im gracefully backing out of this one lol

 

And to tony the tiger if u knew anything at all about evos u would know that my evo 8 does not have a sixth gear only the mr 8 and mr 9 have six gear transmissions which are weak as ****. This leads me to believe ur just saying u have an evo and u don't know what ur talking about or don't know jack **** about the cars u have so do ur research my turbo doesn spool at all in sixth gear well it does but for some reason I go flying backwards

 

You sir have reached the point of no return, I would love to elaborate... but I am sure someone else will that can better explain themselves than me will.

 

Duuuude? Seriously you need to think about what you type and mull on your concepts before posting. The reason you're seeing spool differences in different gears isn't anything to do with the gearing. It's all to do with the RPM or the engines ability to rev through quicker.
In terms of turbo driven vehicles. I currently own 4, two rally cars, my twin turbo Cosworth offroader, and my Isuzu Giga (12ltr straight six turbo). Hopefully soon to add to that number with a Honda Turbo offroader.

 

For those of you that might be interested...
I'm the one on the right

Repainted white

 

And what affects the engines rpms under load or the ability to rev through the rpms faster? Um gearing. Look up act liteweight flywheels even a flywheel affects spool time cuz the lighter it is the less inertia it has which means the less load on the motor. U guys need to pick up a book once in a while for real and to think people take advice from some of u guys.

 

Thanks, it's almost certainly the direction I'm heading. Although shortening the forged rods might be an issue.
The Jimco (offroader) currently has a Motec SDL in it. I don't know what it's able to do in terms of boost as I've always run AIM or analog dashes in the past. Saying that you'll never see anything other than a warning light while being pumelled in an offroad race car. Logging is king.

 

You sir have reached the point of no return, I would love to elaborate... but I am sure someone else will that can better explain themselves than me will.

 

Do what u gotta do report it to the moderators lol its all in the postings u guys started with the I need my sperm tube clipped and bashing me so it was done in defense and everypost I made someone says I don't know what im talking bout when I do. If they ban me for life great y would I want advice from people who do not know motor basics or can't simply search and say gearing doens affect turbo spool time? When it does. If it didn't they wouldn make different gearing for cars. Gears directly affect the torque and power curve of a motor. This directly relates to the output of a motor if a motor is rotating faster down lower with all given equal except for the gearing the turbo has to spool faster. If a turbo spools at 4k rpm with a given gear then u shorten it and the car gets to 4k rpm quicker than before that turbo spools faster duh duh duh duhduh duh

 

Looks like alot of fun

Are you going to be fabricating your turbo/intake manifold and all that other stuff that goes along with that or are you looking to use shelf parts as much as possible? I dont know what you are working with as far as space constraints. The proper Manifold combo's on the B-Series motors will make or break what kind of response you get out of it, as well as the cams and compression. I saw you were running Motec, with good fuel I wouldnt be afraid to run a good bit of compression to help get you into power as fast as possible, just for reference my new engine is 11:1 and I plan on making over 800whp using E85 and I feel comfortable doing so.

 

Lol why would I report you for being dumb? Thats just dumb... I dont report anything to mod's they are very timely in wrapping nonsense up. Have a nice day reading your books and googling

 

For those of you with any valid input. This is part of my gearing spreadsheet (the rest has an estimated dyno plot and torque at the wheels for optimal gear calcs). Sorry it's in KPH.

Gearbox Ratios Engine Parameters
1st 3.46 3.46
2nd 2.50 2.50 Redline 8,000
3rd 2.00 2.20
4th 1.61 1.81 Revs at what speed? 230
5th 1.30 1.61
6th 1.10 1.50
Final Drive Ratio
Reverse 3.51 4.857142857 4.857142857

Results
KPH between gears Redline km/h RPM Drop RPM in new gear
1st 81 0 0
2nd 31 112 2220 5780
3rd 28 139 1600 6400
4th 34 173 1560 6440
5th 41 215 1540 6460
6th 39 254 1231 6769

So we can say a spread of torque between 5.5k and 8k would perform well with the gearset. Going on HybridThry911's plot it appears very achievable. In fact same gearset with his RPM limit looks to be too much overlap in a six speed.

Gearbox Ratios Engine Parameters
1st 3.46 3.46
2nd 2.50 2.50 Redline 9,000
3rd 2.00 2.20
4th 1.61 1.81 Revs at what speed? 230
5th 1.30 1.61
6th 1.10 1.50
Final Drive Ratio
Reverse 3.51 4.857142857 4.857142857

Results
KPH between gears Redline km/h RPM Drop RPM in new gear
1st 91 0 0
2nd 35 126 2497 6503
3rd 31 157 1800 7200
4th 38 195 1755 7245
5th 46 241 1733 7267
6th 44 285 1385 7615

 

Please don't ever reproduce. Oh and nice car in your avatar
You sir are a grade A tool !

 

If you need more rpm you can definately go higher than what hybridthry posted in his setup.

I have a graph similar to his that cuts off at 9500rpm with a bigger turbo and a 81.5x87 motor with low compression not built for any type of responce, he has some power on me at 4500rpm but after 5500rpm my setup takes off, and was still making power at 10k. I feel that with a good jump in compression and a bigger motor/manifold setup for responcse the powerband would of came in a bit sooner.

 

Yup doing research is dumb getting experience and talking to people who know what they are doing is dumb dumb dumb dumb. What's dumb are people who start talking down on someone who offers an opinion and facts the facts are there and everyones statements help me explain myself. I started by saying if he wanted LOW torque bon vtec b18 fits the bill better. High end and revving yes the vtec wins. Then people start talking mess about needing my sperm tube clipped for an opinion. Then someone who people say is reputible like the tony guy makes a statement bout my evo spooling the same in 5th as 6th when it doesn't have a sixth gear lol now that's dumb. And the statement saying gearing only affects speed and rpm well guess what that's affects spool time sorry im right and u all got mad bout it but its true and common sense I couldn explain it better. Shorter gears=faster rpm in a set amount of time=turbo spooling at 4k rpm. If this equation is true which it is then shorter gears= motor reving faster to 4k rpm= turbo spooling faster since the motor got to 4k faster. The turbo wont spool faster in terms of how many rpms it takes from start to full boost but sooner which is basically what I've been getting at if the faster part confused u the amount of time from. Start of spool to full boost will be a constant but the point at which the turbo starts to spool is lower with lower gears. If it takes a turbo 2k rpm from starting to spool to full boost I.e 4k-6k that will remain constant however with lower gears if the car goes from 4k rpm to 6k rpm in half that time the turbo will spool half as fast. Now how is that stupid that's common sense or so I thought

 

I'll try and use whatever parts I can off the shelf. Although intake manifold might be difficult as they are all rear facing (it's a middy). I might try and work some OBX ITB's and throw a custom heavy airbox on it. Exhaust manifold I was thinking either a short ram or custom. Intercooler is going to be interesting. Thoughts at the moment are to run one in one of the sidepods. Other possibiity is to route it up infront of the radiator (which is just behind my head).
Space constraints aren't bad. There is ample room to either side of the engine but I can't play it too low, as the suspension arms will simply strike it off. I also want to dry sump it, so I'll have to run the turbo high(ish) in order to get drainback to the pan.
11:1 CR... WOW. Huge CR for FI. Especially with the boost needed for 800 ponies. I was looking for 9-9.5:1 but if you're pushing it higher I might... might follow. My other problem is with fuel consumption. I'm only carrying 30 gallons which isn't enough to make 200 miles on E85. I may be forced to run E30 (a local NZ gas) in order to get mileage.... again reducing my CR.

 

Yup see another one that has nothing to say but negativity for stating an opinion.

 

Aah I never considered the mileage factor, I though I saw you mention 112 I would feel comfortable running 10:1 with a fuel like that, it all in the tuners capabilities. I know the conditions the motor is going to face is unlike any that a drag car will see over 10seconds. Personally if it was my engine I would be looking into a 5 main girdle for the bottom end to replace the stock 3 main in the GSR, if its installed right it cant hurt and with the constant abuse your fragile cast aluminum honda motor is going to get during a race it can only help...A 500whp turbo B series under constant load for 200mi is kind of uncharted territory for me lol

 

This thread is funny, and you’re wild jumping all crazy. Do you hurt the next day?

I had a 2.0 Non-vtec setup, had a large cam in it to try and compete with the vtec heads. After having the setup, it was clear that i needed to change to vtec. Now have a itr head in the works.

The LS was alright for drag racing, but any other sort of racing would have been a nightmare. Throttle response was slow and choppy due to the cams. The vtec head is just a better design and platform for you to work with. I’m always lurking and reading a lot on this site, and that tony the tiger seems to know his ****. Half the battle on this site is filtering the truth from skewed opinions.

Good luck

 

So sorry you ended up with a non-MR.

Anyhow, you've basically smacked yourself back on track, so I don't want to smack you again or you'll go off track once more. I am sure all those posts against you is starting to sink in, because you are starting to understand and know how to pick our words and place it in your new posts. Happy to see a fast learner.

If you still think LS motors make more torque, and that VTEC causes motors to make no torque, then gladly continue. But I am sure that thought is history, correct?

 

Do u even know the differences between an mr and non mr evo? Cuz I sure do. Im glad I have an 8 it makes 10 less horse power than an mr and the mr has mivec and a bigger turbo. Which is sad to only be ahead by 10 horsepower. However running the 10.5 hotside on my 8 turbo makes up that difference plus some in power. And like I said the 6 speeds are junk transmissions and y most opt for the 5 speed from the 8 which u didn't know they had. And ur correct that thought is history my opinion was never that they make no torque just that the b18b has more down low. Im still waiting for that video of ur evo turbo spooling the same from 20mph at 3k in 2nd and 20mph at 3k in fifth good sir.

 

It would appear that Honda have managed to bend the laws of physics. Piston speeds with that stroke and RPM must be fuggin huge! I still can't believe the curves aren't dropping off after 9kRPM. Rod lenght must be on the long side and components must be of very high quality. I presume, given the flat curves that there is a tonne of head work, and larger valves involved?