SC my prelude! (What size intercooler? 56K maybe not)

[Cannabis]

Unfortunately sometimes i have to drive my mum and so AC is not an option. I have googled and there are some guy done it with out ditching AC and PS
http://www.automotivehelper.com/topic20548.htm

I will have a good look at it and see how i can get around with this.

[Cannabis]

Some pictures with the setup in the previous post.
link:
http://www.automotiveforums.com/vbul...charger+photos

I have read through and found out that he also moved the throttle body in front of the supercharger. What is the benefit by doing this? By doing this he's having problem with cold start and idle problem when AC is on and i have no idea why and how to fix it. Can anybody give me some idea?

Have ordered some innovative engine mount with grey insert and NGR engine damper. Altho i should be saving a good set of suspension... ops:

[Horny_Devil]

y get the NRG damper if u have stiff motor mounts?

[Cannabis]

True!! Never though of that.
Well...i tho i miss the boat for engine mounts but then just in time to place an order. But don't wanna cause too much trouble since i place the engine damper order first. Might sold it afterward.

[Cannabis]

Have picked up some new parts today.
please go to the first post to see the photos

[beowolf455]

Do you have to get the rotors in the SC switched around?

[Cannabis]

From what i have read they can spin either way.
here's the post i have read.
http://www.automotiveforums.com/vbul...charger+photos

[crx_bob]

Originally Posted by beowolf455

Do you have to get the rotors in the SC switched around?

I can confirm from an engine builer that is doing one on an H22a that they work spinning backwards (well the model he has does) just means that the intake and output are reversed.
Unlike gearboxes which are about 30% weaker when spinning the wrong way S/C's dont suffer from this issue.

[beowolf455]

Yea I did more reading and read that too. I was wondering how that worked.

There's a thread on HT with a guy trying to get 500whp with a built b20vtec and a highly modded M90 supercharger 8O

[Horny_Devil]

Originally Posted by beowolf455

Yea I did more reading and read that too. I was wondering how that worked.

There's a thread on HT with a guy trying to get 500whp with a built b20vtec and a highly modded M90 supercharger 8O

theres a guy on K-series, with a K24 thats got about 540whp with his M62 with NOS aswell, makes about 380whp with out the NOS

[Cannabis]

Apparently mikesturbohonda and pommy's civic where using SC14
as well and it seems to work quite well!

I think the supercharger will have to be powered by crank pulley.
The difficult bit is to find out the right size to run the boost i want.
According to the guy in the thread 1 to 1 is 8 psi...etc.

I just need more information to understand what is possible for SC14

[beowolf455]

Its a bit dificult to find info hey, moslty the use jackson racing units on HT

[Cannabis]

Found some info on the net on how to find out the pulley size ratio and ...etc.
From
http://datsun1200.com/modules/newbb/...e=flat&order=0
To choose a setup you need to know :-
1. Engine capacity
2. Maximum engine speed you will be using.
3. Boost level desired

I am setting out the calcs needed for a 1200cc engine in the steps below.

FIRST CALCULATION (Engine Litres/min @ 0 Psi )
Multiply engine capacity (in litres) times maximum engine Rpm. E.g. 1.2 litres x 6000 rpm = 7200 litres/minute. Divide this figure by two as engine only fills every second stroke. (7200/2 = 3600 litres/min.
This is the engines air requirements in litres/minute at 0 Psi boost.

SECOND CALCULATION (boost ratio)
Add the boost pressure desired (7 Psi) for the engine to 14.7 Psi (atmospheric pressure).
(7 psi boost desired +14.7 =21.7 psi)
Divide this answer by 14.7 and this gives the boost pressure ratio. (21.7/14.7=1.476) This is the boost pressure ratio above atmospheric pressure.

THIRD CALCULATION (Actual air requirements @ desired boost)

Multiply the boost ratio by the litres/minute obtained for 0 Psi and you get the actual air requirements in Litres/min for the engine at that boost. In our example this is 3600 litres/min X 1.476 = 5313.6 litres/min for 7Psi boost.

To decide on the correct size of supercharger you need to know :-
1. The swept volume per revolution of the supercharger. (Eaton M62 1 litre/rev, SC14 from a 1G-GZE 1.5 litres/rev)
2. The maximum continuous safe operating speed for the supercharger. (Eaton M62 14000 rpm continuous, Toyota SC14 12000 rpm??)
3. The maximum pressure that can be safely produced by the supercharger continuously. (Eaton M62 12 psi, SC14 10Psi??? teflon on rotors melts??)

CALCULATION (Supercharger rotor speed)
Divide the desired air flow (5313.6 L/min) by the swept volume of the supercharger (SC14 from the 1G-GZE is 1.5 litres per revolution). This will tell you the maximum speed the supercharger rotors must be run at to produce the volume required.
5313.6/1.5 litres = 3542.4 rpm for the SC14.
5313.6/1 litre = 5313.6 rpm Eaton M62

CALCULATION (Pulley size ratio)
Divide the rotor Rpm by maximum desired engine rpm to get the drive ratio of the pulleys. For an SC14 on a 1200 @ 7psi boost the desired supercharger pulley ratio is
3542.4 /6000 rpm = 0.5904. With an 8" shaft pulley on the supercharger the crank pulley for this ratio would be 4.732".

EXAMPLE OF CHANGE OF DRIVE RATIO
If the 1200 cc engines supercharger pulley ratio is increased to 0.75 using the 1.5 ltr/rev SC14 charger, the volume of air produced when running to 6000 would be 6000 x 0.75 x 1.5 litres =6750 litres/min

Boost produced would be 6750 litres/3600 litres (at 0 boost) =1.875 boost ratio For Psi boost ((1.875 x 14.7) - 14.7)=12.86 Psi.

[Cannabis]

Thanks to ADAM the Innovative Engine mounts arrived today. Although you can tell me i don't really need the engine damper when i was ordering my mounts.

Just wondering what size of the intercooler i should be using?
I have measured and finds out a 28"x7.5"x2.5" (710x190x63.5) intercooler might just fit within the hole in the front bumper so i don't have to cut too much of my front bumper. The thing is i can't find anyone sells intercooler this size. I have found a brand called Mishimoto that made intercooler this size. CAn anybody tell me where to source them?

or another similar size found on trademe is 460mm X 160mm X 90mm. Is this size gonna be big enough for my setup? Could anyone give me some idea?

Also if someone who worked in Honda is willing to hook me up with some honda parts will be great. I will need quite a few stuffs.