ATP GTX3076R vs CBRD BBK-B BB
Apr 2, 2014 | 10:14 PM
#48
Is it really a huge mistake from where you are sitting? Wow, I will be sure to check with you first before posting from now on. My father passed away a few years back, so it is a relief to know that you are out there watching over me.
Apr 2, 2014 | 11:11 PM
#49
Apr 3, 2014 | 09:28 AM
#51
I just got the impression from watching the OP's in car video and from his expressed desire to increase top end power that the 3B's compressor just isn't moving enough air for his engine starting from the upper-midrange on up through the top of the powerband. Hence his search for a different turbo, the ported throttle body as well as the MAP3 intake.
He has stated his observation that the 3B's turbine side is too restrictive and creates/contributes to problems such as excessive exhaust back pressure and the resultant high EGT's, high combustion chamber temps and high peak cylinder pressures, etc.
The ATP GTX 3076 does not seem like it would offer a complete solution. Compressor flow is probably about the same on that as a Red , which moves about as much air as his current turbo. Sure he gets rid of the restrictive MHI 10.5 housing but he will inherit the ATP housing which are generally considered to be restrictive in their own right. So, as someone else pointed out the proposed turbo swap will be at best a lateral move.
He has stated his observation that the 3B's turbine side is too restrictive and creates/contributes to problems such as excessive exhaust back pressure and the resultant high EGT's, high combustion chamber temps and high peak cylinder pressures, etc.
The ATP GTX 3076 does not seem like it would offer a complete solution. Compressor flow is probably about the same on that as a Red , which moves about as much air as his current turbo. Sure he gets rid of the restrictive MHI 10.5 housing but he will inherit the ATP housing which are generally considered to be restrictive in their own right. So, as someone else pointed out the proposed turbo swap will be at best a lateral move.
Last edited by sparky; Apr 3, 2014 at 09:31 AM.
Apr 3, 2014 | 09:55 AM
#52
The ATP GTX 3076 does not seem like it would offer a complete solution. Compressor flow is probably about the same on that as a Red , which moves about as much air as his current turbo. Sure he gets rid of the restrictive MHI 10.5 housing but he will inherit the ATP housing which are generally considered to be restrictive in their own right.
Apr 3, 2014 | 11:32 AM
#54
Yes, granted I am passing judgement based on ATP's older designs. They may very well have improved turbine inlet flow numbers through their new castings. Point well taken.
Apr 3, 2014 | 01:10 PM
#56
I just got the impression from watching the OP's in car video and from his expressed desire to increase top end power that the 3B's compressor just isn't moving enough air for his engine starting from the upper-midrange on up through the top of the powerband. Hence his search for a different turbo, the ported throttle body as well as the MAP3 intake.
He has stated his observation that the 3B's turbine side is too restrictive and creates/contributes to problems such as excessive exhaust back pressure and the resultant high EGT's, high combustion chamber temps and high peak cylinder pressures, etc.
The ATP GTX 3076 does not seem like it would offer a complete solution. Compressor flow is probably about the same on that as a Red , which moves about as much air as his current turbo. Sure he gets rid of the restrictive MHI 10.5 housing but he will inherit the ATP housing which are generally considered to be restrictive in their own right. So, as someone else pointed out the proposed turbo swap will be at best a lateral move.
He has stated his observation that the 3B's turbine side is too restrictive and creates/contributes to problems such as excessive exhaust back pressure and the resultant high EGT's, high combustion chamber temps and high peak cylinder pressures, etc.
The ATP GTX 3076 does not seem like it would offer a complete solution. Compressor flow is probably about the same on that as a Red , which moves about as much air as his current turbo. Sure he gets rid of the restrictive MHI 10.5 housing but he will inherit the ATP housing which are generally considered to be restrictive in their own right. So, as someone else pointed out the proposed turbo swap will be at best a lateral move.
Apr 3, 2014 | 01:11 PM
#57
A lot of the e-opinions surrounding the ATP housing seem to be based on very old information. I would love to see some testing/reviews of the CURRENT ATP offerings. It seems to me that they have revised their product line quite a bit since the early days. Not saying they are tops, but I think their products are probably not getting a fair shake on evom.
Apr 3, 2014 | 01:17 PM
#58
Maybe see if ATP could provide you (and us) with any info regarding their housings. If they have positive things to say I am sure they would just at the chance to get the word out.
Or better yet, take the plunge and post up some results for us
Or better yet, take the plunge and post up some results for us
Last edited by nemsin; Apr 3, 2014 at 01:24 PM.
Apr 3, 2014 | 01:24 PM
#59
Newbie
Joined: Sep 2005
Posts: 57
Likes: 0
From: Chicago
I was having the discussion with another person in the Bay Area as I was looking at the bbk-b since my full just blew.
I think oiling is a huge issue for road racing. I think the bbk b is great but can still get starved due to lower oil pressure in the head.
I have a fp green on the way with the required oil filter housing feed line. ATP was a close second and if this one fries I will go with the ATP for a couple reasons.
Cooling is a big thing, as well as less back pressure over any stock frame turbo.
One things I've found while researching atps stock location turbos is that they can run at higher boost with ease without the risks with a stock frame bbk such just blowing hot air.
Also if anything goes wrong atp is around the corner in Hayward.
If I bought one I would need to find out what restrictor it will need since I would want to feed it oil from the oil filter housing for sure.
You will also have a small increase in lag.
I think oiling is a huge issue for road racing. I think the bbk b is great but can still get starved due to lower oil pressure in the head.
I have a fp green on the way with the required oil filter housing feed line. ATP was a close second and if this one fries I will go with the ATP for a couple reasons.
Cooling is a big thing, as well as less back pressure over any stock frame turbo.
One things I've found while researching atps stock location turbos is that they can run at higher boost with ease without the risks with a stock frame bbk such just blowing hot air.
Also if anything goes wrong atp is around the corner in Hayward.
If I bought one I would need to find out what restrictor it will need since I would want to feed it oil from the oil filter housing for sure.
You will also have a small increase in lag.
In transient use for the circuit, lag will be minimal, but slightly increased. better final drive gearing and certain specific boost controllers can assist with that.
Last edited by TheShodan; Apr 3, 2014 at 01:30 PM.
