87 944S Supercharge

[salcaroprese]

I have an 87 944S and I am planning on supercharging it. I want to use the eaton m90 S/C but I am having a difficult decision on where to mount it.

The nicest way, which would allow me to keep my A/C, is mounting the S/C where the AFM is- above the Alternator and a/c compressor, but that would require the fabrication of a custom intake manifold(I wouldn't know where to begin with that) however I do have a MIG welder that can weld aluminum.

The second way is to remove the a/c compressor, move the alternator down on the bottom(if the wires reach) where the a/c comp was originally and mounting the s/c where the alternator originally was.

The third is to remove the a/c compressor and mount the s/c there. The problem with this setup is the m90 is 19.5" in length and I am almost sure it would not fit due to the power-steering rack. I will get measurements today of the length to the p/s rack to compare.

Of course I could go with a turbo-style s/c like speed force racing uses in their kit but those style s/c would cost me minimum $600 used. I am trying to stay within a $1000 initial price range. Let me know your thoughts and suggestions.

Parts List
-eaton m90 s/c
-RRFPR or larger injectors depending on the boost I want to run
-piping
-intercoolor (possibly 951)
-mounting brackets(i'll weld them up)
-A/F ratio gauge
-fuel pressure gauge
-boost gauge
-k&n style clamp-on air filter

[Cocacolakidd]

Hello,

I have a Vortech V5 mounted to my 85/2 944. I had to ditch the air and mount the alternator down low, but also had to go with a turbo (951) intake manifold for clearance. They are much flatter, higher than NA intakes, this left room to mount the Supercharger in place.

Also do not forget to run only between 6 to 8# boost with the regular pistons at 10+ Compression Ratio. I blew out several head gaskets before I lowered the boost. Plus when the knock was occuring I was actually blowing pieces of aluminum off of the pistons. To much more and the motor would have probably gone to total detonation. I now have Turbo Pistons that give me 8:1 Static Compression Ratio. So now I have dialed the boost (Front Pulley) up to 15psi for more ponys.
You may also want to install a KLR for knock control, and better chips in the DME - Adj. FPR, upgrade fuel injectors, an air/fuel ratio gauge will also help some.

Have pfunn - -

[DMRK]

If you plan on using a 951 intercooler it will be easier if you eliminate the AC. This is because the coils will be in your way when you try to install the intercooler. I just installed a 951 intercooler in my car yesterday. I already installed an AC delete bracket in my car so I just removed the coils as well. To keep the AC you will need to do something with the coils. I am not sure what the 951 uses, maybe you could just use them from a 951 also.

[JivenJim]

Ooh I love supercharger Posts. Can I play.

I want to go this route as soon, so I'm would like to know how you're going to control the Timing with the Boost. MSD6A coil controler or Apex or..Pigi back?

Second on the added Adj FPR to list. Maybe see Lindsey racing or such.
Exhuast will not be perfect for increased flow. But doable I think.

The Speed Force Racing Super kits are way pricey. I'm sure that comes with alot of experience of what works and not.. I'm leaning toward that kit but 6K is way pricey. So I've been leaning and steching for about a year now...

Cocacolakidd, do you have a link to your posting or pictures you could show with what worked and results?

I think I have killer pic of someone with the Easton at work but here's one's I found.







Can't tell you more except I do agree AC or PS has to go..

Nice link S2 Easton Supercharge to read,
http://forums.rennlist.com/rennforums/showthread.php?t=284300

[salcaroprese]

I plan on leaving the DME stock. I do not plan on adding any kind of computer controlling management. The increase in airflow with be complimented with increased fuel- either through larger injectors and an AFPR or just a RRAFPR.

If I need to make slight adjustments in timing and/or fuel I can use the FQS switch on the DME.

Piggyback controllers are often expensive and unnecessary. I am trying to keep this project under $1000.

I plan on running low boost initially(under 10psi) and will install a beefier head gasket if I decide to run more boost later.

I want to use an 951 intercooler and also keep the A/C components if possible and DMRK: where and how did you install the 951 I/C on your 944? Did you use the stock bumper?

The 944S exhaust will work fine for much larger amounts of boost than I will run. The stock exhaust is already fairly unrestrictive-this is partly why new exhausts don't net much HP increase.

There is no possible way that the supercharger will fit where the a/c compressor is. There is simply not enough room there. That leaves me to move the alternator down to make room for the s/c or to just put the s/c where the current intake piping and manifold is. This will require a custom intake manifold to make room.

[Cocacolakidd]

Hello All,

I am a working guy with the standard bi-weekly paycheck. So I also sought the least expensive way to Manage my Supercharger/Motor up-grade. First off I started with a DME & KLR with complete engine harness off of a 1986 Turbo. I also added 55# injectors, an adjustable fuel Regulator, and MSD Ignition box. Well this was fine to start with, but it was not the ultimate. I had a couple of custom chips burnt by Vitesse Racing, and this made things better. Still my only controls were an Adjustable Fuel Regulator and an Air /Fuel Ratio Gage by Autometer. I once sent back the chips for revisions which added an other $50.00 to the original $299. This system ran and was OK, but it seemed there was allot left that could be done. I have since gone with the Linsey Stage II MAF and Power Perfect Controller. All this now running 7psi boost. 90% of the other cars (Ricers mainly) out here I just walk away from. Until I ran up against a pure 951, and it was like I was standing still, I was proud of the success. Well that was a begining, now it is quite evolved and different.

Have pfunn,

Ed.

[DMRK]

Well here is my list of what it takes. My total cost is under $900. This setup has been done a few times and seems to work well. With an adjustable FPR, larger injectors and adjusting the FQS you can run fine.

Eaton M90 Supercharger
Bosch 36lb Fuel Injectors
951 Intercooler
Adjustable Fuel Pressure Regulator
AC Delete Bracket
Air Fuel Ratio Gauge
Boost Gauge
Exhaust Gas Temperature Gauge
Intercooler piping, Hose & Clamps


salcaroprese
I installed the 951 IC under the stock nose. Bolts right in, a little snug though. I think a 951 nose might be different, but I did get mine in with my stock nose panel. There is a sheetmetal brace spotwelded on the underside of the nose that kinda gets in the way. I intend to remove this in the future and cut a hole in the nose for some air flow.

this is the space created by removing the AC compressor and moving the alternator down


this is what mine looked like under the nose. make sure you get the all the screws out (2 inner & 2 outer besides the 4 nuts)


remove upper and lower shrouds and drop coils down



Install IC and bottom shroud



install nose

[Dean924s]

I am waiting for Sid to show up with his E85 944. The photos of his intake fabrication are something else!!

This may be of help Something I put together for just this project except I am using a M62 from a c230 Kompressor. I am having a custom pulley fabbed up to eliminate the clutched unit. Plug in your #'s and see what your boost will be as well as air velocities in the intake.

[DMRK]

I have been running E85 in my car since last september (Thanks to Sid). I highly recommend it if it is available. I will continue to run E85 after the SC is installed.

Couldnt get the link to work Dean, could just be me or the fact that I am going through my works server to use the highspeed.

[Cocacolakidd]

Hello,

Dean I also could not get the link to work - something about Microsoft XP Web Development Tools ??? or Microsoft Office Web Components??


Thanks any way.

[salcaroprese]

I have finally decided to go with the a/c delete like DMRK. As for the I/C..I am going with the 951 I/C and may go with a vented nose panel or a 951 front bumper.

DMRK: I am interested in how you are going to mount the s/c.

[DMRK]

I plan on fabricating a mount to attach the SC to the AC delete bracket in the front, and one on the engine mount in the back. It will probably sit something like in the pic here.

[Dean924s]

I forgot about that. If you have office 2007 it comes with it. If you are running 2003 or lower I think you need to upload the developers tools. What it does is integrates excel with your browser so you can use spreadsheets on line.

This is a partial screen clip.

[Cocacolakidd]

Thanks Dean for the information. I looks like Office 2007 could include allot of information. Maybe a full Garage Log also on a sheet, besides the incredable info on the engine. Ballance all of the flow charts with fuel type and flow rate to come up with a 12.5:1 for a correct air/fuel ratio even (fuel density/ injector rate/fuel pressure-etc.).

Thanks,

Ed.

[Dean924s]

BTW I am using an M62 for the size (and it has more than enough capacity for the 2.5L motor). It is much smaller than the m90 and with the short snout the whole unit is moved further forward making the plumbing much easier.

How have all of you mounted your units?

[dally_de]

hello guys...here are some photos with mine installed ..i have finished last year and i am enjoying the car so much...i am running 7psi for the moment,but want to go to 10psi after i will install a piggyback or standalone system...

[DMRK]

Looks great dally_de!

I think I will have my intake run along the outside on mine though, with the air filter behind the headlight.

Did you use 2", 2.5 or 3" piping for the intercooler?

[dally_de]

i have used 2.5''...but i suggest to use 2''.also it is a Must to use IC.i do not know if you will can take air filter behind the headlight.mine is uder the front nose..between headlight's and the IC is befor the radiator ..as i do not have A/C..you have to pay close attention when you alighn the blower as i broke 3belts until i made it right because of that.

[salcaroprese]

dally_de you have a real nice clean setup!

I'm curious about what kind of IC you used to fit before the radiator instead of under the nose panel like the stock 951. Fitting an IC before the radiator would allow me to use my stock bumper configuration for now.

[dally_de]

thank you.. i made one myself..i was in a hurry when i made it and it isn't made like conventional IC (you can see it in photo) but it is doing very good job..difference in temperature is very big between ''in'' and out'' pipes(for example i can't keep my hand on the ''in'' pipe as it is very hot,but on ''out'' pipe it isn't any problem ) and for pressure drop i made measurement's with IC i have 7psi and without it i have 8.5psi ..so it isn't that much drop in pressure..the main problem for me is that i definitely need a piggyback system so that i can squeeze every little pony that i can from it..) as i have few other modification in the engine ...