ROE Manifold Question

[EllowViper]

Short of calling and bothering Sean, does anyone know what the design changes were on the ROE blower manifold from the first run to the current design? I have one of the first 50 production runs and have read that the later design addresses the issue with cylinder #10 running so rich. The reason I ask is that I pulled the blower off last night to refinish my tubes and inlet and noticed a lot of gunk in the corner of the manifold by cylinder #10. In layman's terms, it look like there is a pocket of dead air that gets generated or the design introduces some harmonics in that area or in the rear of the manifold. I think when I recharged my air filters, the excess oil accumulated in that location allowing me to now see how some of the airflow is/is not moving in the manifold. I didn't have standing oil or W/M, it looked more like a dirty frying pan. Didn't take any pics since I just cleaned the mess and moved on.

 

[Steve 00RT/10]

I believe the redesign of the the chamber behind the blower had a lot to do with making this better. That, along with improved software and individual cylinder trim capabiities. We have both. The yellow is one of the very first....installed in the summer of 2003. The gray one is the 6th production run...bought in 1/06. You can see the different plenum design between the two. I think Sean experimented with several iterations of this chamber

Steve

 

[EllowViper]

I have the yellow design, but I don't know how that would really effect the discharge flow and distribution below the blower. It would be cool to see a computational fluid dymanics model of all this in work at various boost and RPM levels...yea right. Are the "blowers" the same with just the intake plentum at the rear being revised??

 

[Steve 00RT/10]

I think the blower is the exactly the same. I have a picture of my base manifold on the pool table before I put it on. I'm guessing it's identical to yours. I'll post it if you want.

Steve

 

[EllowViper]

I'd rather you drive down here and go for a cruise!! Great time of year...especially with my A/C just crapping out. Currently troubleshooting THAT too!! I'm also thinking about a black crinkle finish on the tubes and blower. Is your's painted or black anodized??? Just came from a big FORD Jack Rousch grip and grin. Those Rousch blowers look sweet in the black crinkle finish....

 

[Steve 00RT/10]

I'd rather you drive down here and go for a cruise!! Great time of year...especially with my A/C just crapping out. Currently troubleshooting THAT too!! I'm also thinking about a black crinkle finish on the tubes and blower. Is your's painted or black anodized??? Just came from a big FORD Jack Rousch grip and grin. Those Rousch blowers look sweet in the black crinkle finish....

Well, that's about a 1600 mile run. Seeing as it has been snowing off and on for the last month.....and we seem to be in a little squall right now...we will have to postpone the cruise. We've seen the teens for temperature here on a regular basis as well. The summer games are over here. We did manage to get another 10,000 miles over our limited season.

The gray car is the Roe anodized version. I believe the yellow car blower to be the same, although I have the invoices that show he had the whole thing taken apart and powder coated when he put the GEN III valve covers on.

Steve

 

[1TONY1]

Short of calling and bothering Sean, does anyone know what the design changes were on the ROE blower manifold from the first run to the current design? I have one of the first 50 production runs and have read that the later design addresses the issue with cylinder #10 running so rich. The reason I ask is that I pulled the blower off last night to refinish my tubes and inlet and noticed a lot of gunk in the corner of the manifold by cylinder #10. In layman's terms, it look like there is a pocket of dead air that gets generated or the design introduces some harmonics in that area or in the rear of the manifold. I think when I recharged my air filters, the excess oil accumulated in that location allowing me to now see how some of the airflow is/is not moving in the manifold. I didn't have standing oil or W/M, it looked more like a dirty frying pan. Didn't take any pics since I just cleaned the mess and moved on.

Later models have a diverter plate that bolts to the bottom of the s/c...Roe sells these. Very few changes to the manifold that I have seen. I believe the middle support post was removed. I never did the diverter plate but did modify the support post to make it "aerodynamic" and ported the rear* intake port inlets to flow better. I also had my injectors flow checked to put the leaner injectors in the rear (that is what brought me to now own my own flow bench)
Probably the biggest change was the software=individual cylinder tuning.
Your frying pan goop is normal...probably worse on higher mileage engines.


*before having Greg Good port the whole manifold.