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I agree with a lot of this and disagree with some. As stated I tested on the same car a ported M45 by Stigemyer with a CS 17% pulley, another m45 coated with a 17% pulley and did notice a peak of about 1.5lb boost on my innovate Guage. The power delivery was more smooth with the ported SC. I also have a M45 non coated (no pulley) and a M45 non coated with a WMW 15% pulley. I like the platform and am trying to build the best car for my usage. "My" usage would be a fast fun car for the mountain roads or a car I could drive to the track and back home with full interior. I feel I accomplished that with a forged shortblock, BVHEAD, cam, 550's, header, PSS10'S, and all the suspension bits. Finally I found a TVS900 and that is whats on the car now. The car on the highway is very stable and quiet in 6th but can be dropped down a few gears in a tunnel and scream. (Wife rolls eyes when we approach a tunnel)
The part where you said that you arrived to the point where no more can be done and it is very bitter sweet is exactly where I am now. I'm happy but now I find myself debating on buying a new platform and building it...or just selling everything and getting some of my time back.
Best of luck to everyone on your builds I don't root against anyone and will only share my experience.
How are you judging "Smoothness"? If it's just with your butt gauge.......it doesn't mean anything. Put an R53 on a dyno with a stock SC, and one with a ported SC....and show me some graphs. Everything else is just a placebo affect.
How are you judging "Smoothness"? If it's just with your butt gauge.......it doesn't mean anything. Put an R53 on a dyno with a stock SC, and one with a ported SC....and show me some graphs. Everything else is just a placebo affect.
Well as I stated I saw visually an increase of 1.5lbs at peak boost vs a NON ported M45 and same size pulley. And yes for smoothness under boost it is all "butt dyno". My car has been on a dyno at Carb Connection many times just not in-between these 2 SC's because honestly if it showed a 10HP gain I would of been surprised. The power delivery with the ported SC was just more smooth and fluid. I now however have the 4ea M45's sitting in storage on a self because I moved from that platform.
I love to get chastised by those people that even after proving the fact I invest money, time, and energy into several combinations to get a feel of what is best for MY build as stated above. I honestly could care less since I have no agenda I am pushing, no horse in the race, no dog in the fight, and have no profit to make for what I am saying.
Well as I stated I saw visually an increase of 1.5lbs at peak boost vs a NON ported M45 and same size pulley. And yes for smoothness under boost it is all "butt dyno". My car has been on a dyno at Carb Connection many times just not in-between these 2 SC's because honestly if it showed a 10HP gain I would of been surprised. The power delivery with the ported SC was just more smooth and fluid. I now however have the 4ea M45's sitting in storage on a self because I moved from that platform.
I love to get chastised by those people that even after proving the fact I invest money, time, and energy into several combinations to get a feel of what is best for MY build as stated above. I honestly could care less since I have no agenda I am pushing, no horse in the race, no dog in the fight, and have no profit to make for what I am saying.
Cheers!
Too many variables to prove that was from the porting. Was the ambient temp the same when you tested out each SC? Was the altitude the same? Was the humidity the same? Intake air temps the same? etc, etc.....
All of that can affect boost levels.......and can definitely change it by 1-2psi.
I'm not chastising you....just posting out facts. I could really care less either way......but if you want to state gains from mods (whatever they may be), things need to be consistent.
How are you judging "Smoothness"? If it's just with your butt gauge.......it doesn't mean anything. Put an R53 on a dyno with a stock SC, and one with a ported SC....and show me some graphs. Everything else is just a placebo affect.
Dyno only measures 1 state, full throttle, meaningless to those that drive on the street. Its whats under the curve that matters to most in street driven cars... part throttle performance. That is hard to quantify on paper. It can be done though with the right setup. Trouble is making it repeatable, it can be done on a dyno if if the throttle valve can be set to per-determined openings with the same load applied from the dyno.
On my Ram I spent a couple of years giving it a fresh look, aka makeover. Spent a lot of time reducing rotational mass & doing some aero work. Learned a ton along the way and the biggest thing I took away from it is certain changes will affect the bottom end torque and throttle response. The point is, any change in the air flow into the engine will affect response. (side note, went as far as as to add an electric exhaust cutout on the bottom of the air box... just to play with. Found that fully closed = great bottom end torque below 2k rpms, fully open adds better response above 2k... which is awesome crossing Idaho doing 85ish)
Too many variables to prove that was from the porting. Was the ambient temp the same when you tested out each SC? Was the altitude the same? Was the humidity the same? Intake air temps the same? etc, etc.....
All of that can affect boost levels.......and can definitely change it by 1-2psi.
I'm not chastising you....just posting out facts. I could really care less either way......but if you want to state gains from mods (whatever they may be), things need to be consistent.
Agree on essentially everything you say here. I just knew what felt smooth and linear. If I were to do it again I would dyno the ported SC vs non ported with and without an electric waterpump. I really believe that the extra stress weighed on the SC by the factory waterpump shortens the life expediency of the M45.
As for IAT'S I have tried the stock IC with JCW cover and with the DDM cover. I also have the GRS Motorsport and a GP IC with a DDM IC. The GRS Motorsport and GP with DDM perform almost identical. Enough for the right money I would sell the GP. (GP is more quiet though)
Agree on essentially everything you say here. I just knew what felt smooth and linear. If I were to do it again I would dyno the ported SC vs non ported with and without an electric waterpump. I really believe that the extra stress weighed on the SC by the factory waterpump shortens the life expediency of the M45.
As for IAT'S I have tried the stock IC with JCW cover and with the DDM cover. I also have the GRS Motorsport and a GP IC with a DDM IC. The GRS Motorsport and GP with DDM perform almost identical. Enough for the right money I would sell the GP. (GP is more quiet though)
You think the DDM cover works well? I was considering that at some point. Then an intercooler upgrade down the road.
Again you do what you want but it's not as crucial as you would think. I have enlarged intake manifold and of course rmw header. Having used the RMW BVH and after both of those I can tell you there for sure was no seat of the pants change and asr as the Link Ecu goes there was no VE change either registred in the Tmap. I know how you feel man you just want to do something anything on the car to keep the good times rolling. It was a hard pill to swallow when I was finally done with my r53. Like welp I have done everything and the project is over. I enjoy working more than driving sometimes. I guess its why I did work for teams rather than be a driver all the time.
I think your going to have your hands full when that head comes off with all the other ***** you should do while its off. I almost guarantee some of your PSU seep or straight up leak even if its not hitting the ground.
Sorry but psu ???
I totally agree , I LOVE working on this car , researching stuff about it and online parts searching just to see whats all available for it.
if you seen my car in person you'd be very impressed with it condition. especially for having 200k its in amazing condition. So working on it is very easy n fun as your not fighting rust or greasy grime crap or both.
I know I'd never see back what I put into the car but that means nothing to me as I wanna keep this car, its my absolute FAVORITE car I've ever driven and I've been making it custom in any n every way to MY LIKING. Haha I feel empty if a days goes by I didn't aleast go out n pop my hood.
It's got all new stuff that it would absolutely need or might need so thats why I went ahead with the head and cam as I feel this car can justify the price tag this mod takes. I been doing a lot of reading on head installs n stuff and I'm still too scared to attempt it my self I just love this car too much to wanna risk damaging it OR this head n cam that id NEVER be able to obtain again. I got it for a great deal at a time I for once actually had that amount of money to spend on my car. I'm putting away $$$ now to pay someone to either do the install or preferably do it and have me help n show me the process. I'm no noob when it comes to auto mechanics but I'm FAR from being what I would call a good/experienced mechanic.
On my readings, I saw no improvement from blocking those ports so I let them be. Having said that, relative roughness leading to increased friction drag and 'k-factor' from abrupt transitions is something we've known for decades to reduce efficiency in fluid systems.
So I found porting just the intake side of the sc and installed a 19% pulley. The combo is keeping stock iat's dang near with other supporting mods and it's making 19psi too !
I ported a facelift sc out on the intake side and completely removed the hump. I also then port the same part out of the plastic boost tube and open the throttlebody end opening up abit. I also port the intake Manifold ports and enlarge its inlet also , I hollow out and reshaped the inside of the intercooler horns also and on the driver's side elbow I grind down the bolt humps inside and completely reshape and smoothen out the air path.
i also ported out a head BUT haven't installed ot yet BUT my buddy installed his i ported along with everything else and his car is night and day.
then you install a bmvv12 65mm throttlebody and 3in intake and I can GUARANTEE your car will pick up some awesome power.
there is SO much room for improvement on our stock intake components. On an all stock engine im sure it would help still but when you throw on a cam , smaller sc pulley ect , that's when the porting really starts helping.
lol I even ported out my Sprintex supercharger horn because it too had crap internal casting and room for improvement too. Though the sc its self cannot be ported.
here's some pics of my port jobs.. I've also been finishing them off by sandblasting them internainternally as it really brings out a much much smoother finish vs just hand polishing. That idea was given to me by a fellow member..
