3 cly subaru blowers

phillatdarwin · Post by **phillatdarwin** » Thu Oct 08, 2009 10:14 pm

I am thinking of building a hot ea81 with a blower /turbo setup with blow through carby setup .
The info I am after is the CFM output of a subaru blower or a link of it on the net, as I want to remove the turbo lag and make it go hard .

Brumble · Post by **Brumble** » Fri Oct 09, 2009 1:33 am

Not quite sure exactly what you are talking about but I have an EA81T sitting here unused. I bought it with the intention of rebuilding it to go into my brumby but decided to go down the EJ20G road instead. PM me if your interested. If you don't want it I will probably sell it off either in parts or as a whole to anyone that is interested.

phillatdarwin · Post by **phillatdarwin** » Fri Oct 09, 2009 10:03 pm

i can tell you all how to do it when i have it work out as far as CFM of air that it needs
u need a blower and a turbo to do it and get no lag at all .

steptoe · Post by **steptoe** » Sat Oct 10, 2009 12:36 am

NA CFM will change with whatever boost pressure you give it surely

last celtic warrior · Post by **last celtic warrior** » Sat Oct 10, 2009 9:43 am

Methinks someone is taking the p!ss...

phillatdarwin · Post by **phillatdarwin** » Sat Oct 10, 2009 11:26 am

i have found out that a 3cly subaru blower puts out 300cc per turn now i have to just work out how much the out put of ex gas cc is per cyl at mid rpm and then i can work out what size blower i need .
as this is a way that the old school drag races got there boost are low rpm off the start line .
with this way it will be inacooled carbe blow thro

RSR 555 · Post by **RSR 555** » Sun Oct 11, 2009 2:12 am

From my experience with blowers/superchargers, they are either carburetter, which is placed prior to the blower (Big mothers for drag racing) or they are fitted to fuel injected engines prior to the throttle body. I have only ever seen turbo charged engines have blow through carbies and this is only low boost (around 5psi) as carbies are designed to use vacuum to have them work efficiently.

So when you say "Hot EA81" what do you mean?

CPOCSM · Post by **CPOCSM** » Sun Oct 11, 2009 7:59 am

There is one of the Subaru SC's on Fleabay at the moment for $375 I think. I was tempted to grab it for the mini as it is designed for up to 1.0 litre or motorbikes.

Would give the Mini a good 30 percent increase in power...most of the mini crowd are doing the SC-12 road.

phillatdarwin · Post by **phillatdarwin** » Sun Oct 11, 2009 9:31 am

if i go the carbies way it will have to be blow thro as i need incooler so i can run lots of boost maybe i mite go EFi i are just thinking at this time .
as u know u can buy EFI carbies now just bolt them on and thay set the fuel rate to what your ex gas is doing .

Mr Top Hat · Post by **Mr Top Hat** » Sun Oct 11, 2009 6:52 pm

phillatdarwin wrote:if i go the carbies way it will have to be blow thro as i need incooler so i can run lots of boost maybe i mite go EFi i are just thinking at this time .
as u know u can buy EFI carbies now just bolt them on and thay set the fuel rate to what your ex gas is doing .

sorry i dont think that makes any sense a fuel injected carbie?

correct me if im wrong

and post a link where you saw this plz?

Gannon · Post by **Gannon** » Sun Oct 11, 2009 7:55 pm

Yeah i have my doubts about EFI carby. Some early Subaru's sold in California had feedback carbies, but this was only for emissions.

Carbies and forced induction generally suck on a daily driver.
If you want to keep it simple, get a fuel only Microtech ECU (they can be picked up pretty cheap on ebay)

I think a supercharger/ turbo combo is gonna complicate things for little gain.

Either have a turbo system chosen correctly to give you good boost response (ported heads, good exhaust manifold, small turbo and free exhaust) or a supercharger that is designed for a 1800cc engine. A 1000cc supercharger wont cut it

phillatdarwin · Post by **phillatdarwin** » Sun Oct 11, 2009 8:22 pm

i see the efi carbies in a add in the Street Machines mag .

RSR 555 · Post by **RSR 555** » Tue Oct 13, 2009 8:04 pm

I believe the carby efi systems are for people with holley or webber carbies looking to change to a efi system but I don't think you'll...

a) get one small enough for a EA81

and

b) Don't think they are designed to have boost through them (even though they have an efi injector in the middle of them)

IMO I'm thinking that the expense would outway the final result.

wrxer · Post by **wrxer** » Wed Oct 14, 2009 12:10 am

single point injection was available on ea falcons and prob xf chook buckets too. maybe big block 202 in vk commobores. essentially 25 year old tech being flogged to no brainers. that said i reckon the vk one would suit a blow through 1800 and bcause is bosch is is chippable fairly easily

phillatdarwin · Post by **phillatdarwin** » Wed Oct 14, 2009 8:59 am

i will look around and see what i can find first .

shuffbag · Post by **shuffbag** » Wed Oct 14, 2009 1:41 pm

google is your friend, there are indeed efi carbys.

but it is more made to look like a carby from the outside, while operating just as a efi car would on the inside. i've only seen them for the boys playing with 8's, its done so they can throw it on there manifold and go. quick and pretty simple way of converting a old motor. but i guess it would be like single point fuel injection in most case's.

phillatdarwin · Post by **phillatdarwin** » Thu Oct 15, 2009 12:01 am

can you give me a link for them as i can not find them with google.
have looked and looked .

steptoe · Post by **steptoe** » Thu Oct 15, 2009 7:34 am

If you can still find an efi Camira its TB or mpfi or both, components should be nicely matche to EA81 capacity, the MEMCAL computer is said to be adjustable for some boffins, culd be picked up cheap maybe? Years back someone either had same idea of camira stuff or actually hoked it all up to an EA81 NA

shuffbag · Post by **shuffbag** » Thu Oct 15, 2009 10:09 am

http://www.professional-products.com/pp ... 07_web.pdf

here is a link to some catalog info, like i said its mainly for larger engines.

p.s if you need help with google i can help you

AndrewT · Post by **AndrewT** » Thu Oct 15, 2009 10:46 am

Hot EA81? How much power are you actually expecting to get? I bet an Excel will still keep up