mperformance

Here we go again. Now is my turn I'm taking the jump and going 12a turbo EFI. I know I know a 13bt is cheaper blah blah blah...but that's not fun.

The goodies some which I'm still sourcing:

Megasquirt based (wanted haltech but price diff is just too great)
stock S5 turbo/mani
intercooler setup (still pending)
12a large streetport
GSXR throttle bodies 42mm-44mm (still deciding if on paying a bit extra for hayabusa 44s)
Racing beat wrap around intake mani
NOS EFI fuel pump 67GPH


So Megasquirt II is on it's way already assembled w/ full fuel/timing setup. I wanted to get a Haltech E6X but I found that the group support and the quality of megasquirt is getting better everyday.
The GSXR or Hayabusa iTBs will replace my current carb setup and fits nicely in the racing beat wrap around style intake manifold.
The 12a I'm using is currently passed it's break in time with lot's of serious high rpm passes and with proper carbs is a mid 14s power house in a stock GSL chasis. Large streetport with decent exhaust port, hardened oil pump, high oil pressure reg., new bearings and all metal not carbon apex seals.

I can't wait to get my hands dirty...

-xlr8planet-

iTrader: (3)

itbs and turbo .... they do not match well

Latin270

Is this the 2 peice manifold? Would'nt a one piece manifold with the longer runner be a better choice?

perfect_circle

care to elaborate?? ive been contemplating a similar intake/ecu, so im curious what problems would arise.

mperformance

it's been done before and I rather go this way (itbs GSXR/hayabusa) than use a stock 13b manifold. I've seen more problems with a 13b intake manifold as far as setting it correctly, paying for an adaptort,etc. Now, if there is a valid reason why not go w/ itbs for turbo let me know before I purchase them.

I'll use the racing beat 2 piece one since that is what I have...the longer one is better but this will work.

all of the parts should arrive next week so in 2 weeks I'll be setting up the EFI system. I'm still trying to get the ITBs.

mperformance

BTW I got 3 sets of 13b stock intake manifolds. 2 from 86-89 and 1 is a 90's system. non are from turbo setups, so I cannot match it to the lower intake part of the racing beat intake system. The GSL SE one would have been perfect.

Latin270

You can get any 13b housing cut it to match the 12a seal grooves just like the gsl-se. Contact Mecca, he posts on here and he has a machine set up to do this. This way you dont have go nuts looking for SE housings and paying the crazy prices people are asking for them. 4 port 13b anyone?

Pele

iTrader: (28)

What are you doing for ignition?

Zeal Engineering is developing code for the MS-II to run rotary trailing ignition. Currently it's only available on the MS-I with MSnS Extra. It uses the FC CAS and FC leading and trailing coils and ignitors.

Check in the MegaSquirt section of the ECU forum here for more info.

mperformance

thanks for the responses.

Pele I bought an MS II VS3, but I thought the code was already available for it. I plan to use a CAS with 1 MSD6a driving leading FC coil and stock trailing FC ignition. Now I have to keep reading since you tell me that this is only available for MSI. I'll get into this once I set up fuel, then I'll worry about ignition hopefully I won't have problems with the MS since that is the main reason I bought it. Haltech has some cheap fuel only computers that I could have used...but MS seems a lot more flexible for the price.



Latin270 thanks for the info that's not a bad Idea and I have seen the frankestein GSL SE 13bs done a lot in Puerto Rico. The reason I'm doing all this is to go 12a since I have close to 6 12a motors and a crapload of extra parts, going 13b is the easy way. I have some 13b engines and could have bought a 13bt JDM engine for cheap. I also have the 12amotor ready, broken in and is well built with even 93' pacman seals and all new bearing. Oil mods and so on...so I think this should be good for a nice 12a turbo setup. Rotors are high comp not JDM 12as so I have make sure I go with a nice setup and tune it right.

anewconvert

iTrader: (1)

yeah... what were those guys over at nissan thinking when they did that with the skyline. Morons............................................ .......



BC

Pele

iTrader: (28)

I'll keep you posted on the progress. Check in the MS section of the ECU forum often though.


For now, I suggest you run fuel only and use your distributor for ignition as you say you're going to do.

Yes, the MS is quite a bit more flexible for the price. It's due to using off the shelf components and an open source design.

perfect_circle

im still curious as to why someone posted that itbs and boost where bad.

680RWHP12A

thats just real bad mis-information... they work great with boost, why wouldnt they?

rotary emotions

Well, considering there are turbo kits around for the Hayabusha and other bikes, they must work together. Wouldn't feel brave enough to ride a turbo'd Hayabusha, but that's another thing

perfect_circle

i wouldnt even feel brave enough to ride a busa let alone a turboed one.

luiml73

iTrader: (1)

www.injectionperfection.com

Yark79

^I was just about to suggest that.

mperformance

Well since I'm on a budget I ruled out the itb option. itbs nowdays are getting more and more expensive and I no longer have the racing beat manifold. It's was used on another race car.

I have to start all over again.

Since I have stock 86-89 intake manifolds I think I'm going this way with a modified lower intake manifold section from a 6 port and an upper manifold with 2 extra injector bungs welded on the 2 center runners right under the plastic throttle body elbow. They fit and would allow me to use one fuel rail extrusion. I'll use a 13b to 12a adaptor to match the intake to the block.

Basically the engine will look like a N/A turboed 13b.

The fuel injection perfection system is expensive considering you need an IDA lower intake manifold an a turbo hat for it. It would be one good looking setup but out of my current budget.

Now I'm seriously considering the racing beat holley manifold or a stock 12a carb mani with adaptor and using an auto-nomic

http://www.auto-nomics.com/cgi-bin/s...rt=10850-002-D