Another OHV M90 build

[rocket 5979]

This if part of what I will make my manifold out of. That is allot of billet aluminum.

 

[Dono]

hahaha. Nice manifold buddy!

Seriously, thats awesome to be able to fabricate like that. I'm hoping that when I retire I can get a welder and maybe take a welding course to get started. Im looking forward to seeing your aluminum fabrication skills. Im always amazed to see what people can do. I think I missed my calling as a machinest.

No pic of what and how you ported/polish the m90? Did you pretty much just smooth out rough edges to help with the heat generated? Ah, who am I kidding? I'll be a wildly happy guy just to see my rig work. Then down the road I'll look at getting fancy.

 

[Dono]

Oh, bung welded in, and wideband O2 plugging the hole ($20.00). Now, I just need to get a grommet and drill a hole under the hood latch cable. Then I have a spot to start routing wires thru.

 

[rocket 5979]

No pic of what and how you ported/polish the m90? Did you pretty much just smooth out rough edges to help with the heat generated? Ah, who am I kidding? I'll be a wildly happy guy just to see my rig work. Then down the road I'll look at getting fancy.

I tore the blower down and then got side tracked so I never got off of my lazy ass to port it yet. You do a combination of widening the inlet and outlet in certain areas, and grinding down the bosses for the bottom center blower bolts, and cutting those same bolts so they don't stick into the airpath now that the bosses are cut down. I will post a few pictures once I get to porting it.

 

[Dono]

I have a question for the gen2 guys. I'm going to need to push some wiring thru the firewall. I just saw in 911 where a guy blew thru his wiring harness with his drill. I was going to drill a hole on the drivers side, just below where the good release cable is. I'd use a grommet of course. Anyone know of an existing grommet i can use? I have wideband o2 wires, boost gauge hose, and fuel pressure. About 1/4 inch hole needed, maybe a bit larger. Humidity in Florida's awesome. Love it.

 

[phix-]

wait.. your in florida? now I want to see this thing! to be honest you could route the wideband wires in under the driver seat (only if your bung was welded on the driver side or cables reach with no bind). All the rest should be fine going through the main firewall grommet. I currently have wires for 2 gauges, a 0 gauge wire, and a boost vaccum hose, all going through mine.

or

drill a hole the size of the factory driverside firewall grommet and use a replacement from Ford.

 

[Dono]

Where's the main firewall grommet? Yes, we flew in to do the whole Disney/universal thing. Was on the dragons at universal so many times today, my heads still spinning. Oops, could be the beer now.

Sure is nice to escape the snow for a bit.

 

[jd4242]

hahaha. Nice manifold buddy!

Seriously, thats awesome to be able to fabricate like that. I'm hoping that when I retire I can get a welder and maybe take a welding course to get started. Im looking forward to seeing your aluminum fabrication skills. Im always amazed to see what people can do. I think I missed my calling as a machinest.

No pic of what and how you ported/polish the m90? Did you pretty much just smooth out rough edges to help with the heat generated? Ah, who am I kidding? I'll be a wildly happy guy just to see my rig work. Then down the road I'll look at getting fancy.

i would do whatever you can do now to help keep the heat down.maybe rocket can port his and switch out blowers with you for a feeor do you have another plan to keep heat down or just dont think your run enough boost to produce that much heat?

 

[rocket 5979]

i would do whatever you can do now to help keep the heat down.maybe rocket can port his and switch out blowers with you for a feeor do you have another plan to keep heat down or just dont think your run enough boost to produce that much heat?

No dice on the trade. I am doing a full rebuild and port on it in addition to having it powdercoated a dark blue color. Tomorrow morning the case and snout housing are off to the powdercoater. Should be pretty sexxy when done. But if Dono wants then I can port his blower for him, and even rebuild it if he wants. It won't be free of course. Here is a pic of the before and after of the portjob on the outlet. I also ported the inlet but the lighting was off on the pictures and glare made it hard to see much. Eventually I will post final pics of it all.

 

[jd4242]

No dice on the trade. I am doing a full rebuild and port on it in addition to having it powdercoated a dark blue color. Tomorrow morning the case and snout housing are off to the powdercoater. Should be pretty sexxy when done. But if Dono wants then I can port his blower for him, and even rebuild it if he wants. It won't be free of course. Here is a pic of the before and after of the portjob on the outlet. I also ported the inlet but the lighting was off on the pictures and glare made it hard to see much. Eventually I will post final pics of it all.

Yea was just throwing it out thereWow you went big with that!!

 

[rocket 5979]

Yea was just throwing it out thereWow you went big with that!!

Not really that big.

 

[jd4242]

Not really that big.

maybe its just the pic or im use to 3800 m90dont get me wrong not saying you over did it or anything like, that just saying it looks big compared to my 3800
YOURS

MINE

 

[jd4242]

ive also never seen a tbird bottom port job soo,think its just the casing are so different and you have a closer up pic

 

[rocket 5979]

maybe its just the pic or im use to 3800 m90dont get me wrong not saying you over did it or anything like, that just saying it looks big compared to my 3800
YOURS

MINE

It is a little on the bigger side than some more mild ports but not nearly as large as some you will see. If you take a look around at some of the ways the other larger Eatons are ported you will see a trend with the porting at the top of the vee being opened up a bit more. Obviously every Eaton is different and I don't recommend porting an M90 like you would a M112 but opening that throat up a little bit usually yields a little bit more power. For every company out there that ports superchargers you will almost find as many different ways that the Eaton can be effectively ported. As with any porting job, there is a point of diminishing returns when you go too big.

Another thing I forgot to mention is the different intended use of the 3800 supercharger, and thus a contributing reason why its port is different. Smaller displacement engine (same with the supercoupe M90 too) and in the case of the SC it also has heads that don't flow nearly as well as the 4.0 SOHC does.

I am not offended in the least by your observations and welcome them so that more tech info can be posted. I can see that at first glance when compared to your blower that things might look strange, but when you factor in the differences between the intended uses of the port jobs on their given engine applications then the picture becomes a bit more clear.

 

[Dono]

For my heat, I'm hoping that the boost is low enough so heat Isn't an issue. Rocket, if it wasn't for the cost of shipping, my m90 would already be on its way.

 

[jd4242]

For my heat, I'm hoping that the boost is low enough so heat Isn't an issue. Rocket, if it wasn't for the cost of shipping, my m90 would already be on its way.

If you plan on running the 3.2 pulley i would be slightly worried sense you did up your compression but then again your tuning capabilities are alot greater than mine right now so.im sure rocket will chime in with some real knowledge about if you should be concerned or notsomeone should make an IC like mine for the ford m90 yall are running,alot of people use it for many different app and sure others would love to have oneim just worried as im all most at 11:1 and tunning wont be done upfront.

 

[rocket 5979]

If you plan on running the 3.2 pulley i would be slightly worried sense you did up your compression but then again your tuning capabilities are alot greater than mine right now so.im sure rocket will chime in with some real knowledge about if you should be concerned or notsomeone should make an IC like mine for the ford m90 yall are running,alot of people use it for many different app and sure others would love to have oneim just worried as im all most at 11:1 and tunning wont be done upfront.

It depends on the boost level that he plans to run. Around 6 psi or so and he will be ok.

Actually I do plan on making an AWIC for the M90 blower system I will be making for my Sport. Between that and the port the IAT's shouldn't skyrocket too much from this heaton.

Dono yep I could see cost of shipping your blower back and forth being as much as the blower itself cost.

 

[Dono]

Intercooler is the way to go. Smallest height is 1.5 inches, and a minimum of $500. A lot of cash and I'm not sure if the room is under the hood.

 

[jd4242]

Intercooler is the way. Smallest height is 1.5 inches, and a minimum of $500. A lot of cash and I'm not sure if the room is under the hood. I'll seehow the goes.

WAIT!!you cant use the traditional IC for that charger.yours is mounted upside down remember

 

[rocket 5979]

Intercooler is the way. Smallest height is 1.5 inches, and a minimum of $500. A lot of cash and I'm not sure if the room is under the hood. I'll seehow the goes.

Are you saying it will take me a minimum of $500 to do an AWIC or are you just speaking in general terms for yourself? I plan on doing mine for less than a few hundred bucks; and that is for everything from the AWIC, Bosch pump, Cobra HE, fittings, etc.