Shearer Manifolds 02 Dump RELEASED!!!

[Mike@AwdMotorsports]

I want to take a minute to show you guys the newest 02 Dump available on the market.. This was designed by Shearer with our help to make 1 dump that fits all LICP.. There is nothing worse than trying to manipulate an 02 dump to fit while on the car.. This is a high quality piece and we have taken into consideration all aspects of the Dump to insure the most power is extracted.. If you notice the Wastegate side is ported Properly to Eliminate Boost creep along with the piping being stepped up slightly coming off the flange.. The attention to detail is where the $$$ invested in the piece is at..

I know many of the people i have spoken with have commented on the pricing but you must take a few things into consideration.. The previously available dump from EPM was 275.00 and they were not making any money and were forced to close.. Considering that this piece gains down low in spool and ~20hp on top is similar to that of the gains you get from cams which are 500+.. So 1.00 for 1.00 the gains are there for the $$$ IMO..

Pricing is 475.00 Shipped!!!

[compscibOi]

I have this o2 dump. The quality is amazing, the finish is high caliber. The divorced O2 housing gives a separate opening for the exhaust gases coming off the turbo, both through the turbine itself and the internal gate. This frees up any restrictions and allows the gasses to escape without one affecting the other. I highly recommend this piece and I love how it rips under WOT!

[crcain]

Looks cool. I'm trying to figure out why an o2 dump would spool sooner than a normal o2 housing. What o2 housing did you use for the baseline?

[dmoevo]

this was tested on my car, I had a megan o2 housing before the shearer was installed.

[compscibOi]

Looks cool. I'm trying to figure out why an o2 dump would spool sooner than a normal o2 housing. What o2 housing did you use for the baseline?

less restriction on exhaust gas flow. Divorced O2 housing has a seperate path for the turbine exhaust gases and the gases escaping the waste gate. Allows for the turbo gases to escape quicker, faster allowing for faster spool up with less restriction than that of a standard O2 housing with both the dump gases and turbine gases escaping into the same collector dump.

[crcain]

less restriction on exhaust gas flow. Divorced O2 housing has a seperate path for the turbine exhaust gases and the gases escaping the waste gate. Allows for the turbo gases to escape quicker, faster allowing for faster spool up with less restriction than that of a standard O2 housing with both the dump gases and turbine gases escaping into the same collector dump.

But during spoolup the internal gate is closed, therefore it doesn't matter if it is divorced or not.

[compscibOi]

But during spoolup the internal gate is closed, therefore it doesn't matter if it is divorced or not.

Ahh, but it does!

[crcain]

Not disputing this test at all, but just to make sure, Mike can you confirm this test was on the same day, no other changes, and starting the pull at the same rpm and in the same gear?

[Mike@AwdMotorsports]

Not disputing this test at all, but just to make sure, Mike can you confirm this test was on the same day, no other changes, and starting the pull at the same rpm and in the same gear?

Feel free to ask the owner DMOevo who was there and his tuner friend who didnt work here at the time this was done.. They took off the Megan and replaced with the Shearer the same day.. Its the same Gear, the rpm he hit it was off a little as you can see but the power carried thru the powerband..

Mike

[crcain]

Feel free to ask the owner DMOevo who was there and his tuner friend who didnt work here at the time this was done.. They took off the Megan and replaced with the Shearer the same day.. Its the same Gear, the rpm he hit it was off a little as you can see but the power carried thru the powerband..

Mike

Thanks for the reply. Sorry I don't know much about how dyno works.. based on your experience, do you believe starting the pull at different times like in that graph could account for the spool difference?

Did you do any road datalogs before and after to confirm the spool difference?

[compscibOi]

Looks like 3300 RPM to ~ 7800 RPM. The power comes on quicker and maintains more of it throughout the entire pull with this O2 dump. I chose this unit to bring back a few rpms of spool and to help maintain power throughout the entire band. All I can say is my car RIPS WOT. I have to be selective now when I get on it, everything comes up so fast and stopping the car is a chore. Plus the reactions of people with windows down when the dump goes off is priceless.

[eviltsi]

Looks like a stright rip off of the JM Fab piece....

[dd_man]

somehow i doubt Ron has ever ripped off anyones design

[shearer]

Thanks for the dickhead comment jackass. It's a direct replacement housing, only so many ways to skin a cat and the dumptube is quite different than JM Fab's I believe.

Pressure differential across the turbine is my only explanation why the turbo spools up faster. Post turbine pressure is decreased(or flow is increased) making the turbine more efficient.

We did another test on David's Project White with my o2 dump and the decrease in spool time was seen there as well. However we could not get the boost curves to get anywhere close to matching and the test was kind of a flop.

[crcain]

Thanks for the dickhead comment jackass. It's a direct replacement housing, only so many ways to skin a cat and the dumptube is quite different than JM Fab's I believe.

Pressure differential across the turbine is my only explanation why the turbo spools up faster. Post turbine pressure is decreased(or flow is increased) making the turbine more efficient.

We did another test on David's Project White with my o2 dump and the decrease in spool time was seen there as well. However we could not get the boost curves to get anywhere close to matching and the test was kind of a flop.

Thanks Ron, good to know the spool improvement happened in another example. I think this might have to be the turbo elbow of choice I recommend to people from now on. What is the diameter of the pipe which connects from turbine housing to downpipe?

[Mike@AwdMotorsports]

Thanks for the reply. Sorry I don't know much about how dyno works.. based on your experience, do you believe starting the pull at different times like in that graph could account for the spool difference?

Did you do any road datalogs before and after to confirm the spool difference?

The graph is in RPM so its easy to see everything.. It carried power thru the whole powerband clear as day.. When you drive the car its clearly apparent also.. We did not do any road data logs.. We tuned it on the megan, swapped and retuned on Shearer..

Mike

[Mike@AwdMotorsports]

Looks like a stright rip off of the JM Fab piece....

Get your eyes checked out... There are several differences in these 2 pieces.. its like comparing a downpipe from 10 companies.. Only so many ways to route a piece of pipe thru a car..

[Mudkip]

I believe everyone needs to read this before they make any internet engineer like comment.

[dmoevo]

both pulls were done on the very same day, took the car off and put the Shearer dump on then strapped the car back on the dyno, before my power was stuck at 430 then swapped this piece and got some good results. I was never a big fan of the dump before but have become a solid believer in them especially after seeing the results on my car. The quality of this piece is absolutely amazing, I can take it off right now after one year and it will almost look brand new also fitment was perfect Ron got it on his first try!

[crcain]

I believe everyone needs to read this before they make any internet engineer like comment.

I've read that, and other books on FI and 4-stroke performance. What is your point? Do you have anything to say given your engineering experience?