Crawford Z Car Does It Again!
10-15-2007, 11:10 AM
#81
Sponsor
Performance Nissan
Performance Nissan
Thread Starter
iTrader: (92)
Join Date: Dec 2004
Location: Pasadena/Bay Area
Posts: 6,151
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Profink
Anytime Andy. I'd be interested in the VLSD except I'm saving up for a Quaife. Never got to say hi to you at Ben's party. You left just after I showed up. I had that 66 mustang.
10-16-2007, 02:20 PM
#84
Registered User
iTrader: (15)
Join Date: May 2007
Location: Studio City, CA
Posts: 3,430
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Andy@Performance
Only 4 people? What happened to the rest?
10-16-2007, 04:32 PM
#86
Sponsor
Performance Nissan
Performance Nissan
Thread Starter
iTrader: (92)
Join Date: Dec 2004
Location: Pasadena/Bay Area
Posts: 6,151
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Riley07
Yeah, that's the route I'm going...The gains on the Berks are proven and the price is cheaper..
10-20-2007, 03:15 AM
#90
Registered User
iTrader: (6)
Join Date: Mar 2007
Location: Atlanta
Posts: 340
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Andy@Performance
Cheaper or not, Crawford has been around much longer than Berk in our world and is much more familiar with the Z and its VQ engine. Crawford has established a credible name within the Z community and has contributed so much. Someone from Crawford will post on this thread the benefits of their cats over Berks and explain the differences between the two shortly. All I can say is, you get what you pay for and as a Z enthusiast myself, I'd rather pay a little more and go with someone that I know will be 100% reliable and has an established name.
I agree to a certain extent...But just because the Berks are a little cheaper doesn't mean that they are crap..I know your trying to sell the Crawfords and all, so I do understand your basis..Berks has been around for a while and has produced some nice products for the S2000's so I know they are a pretty reliable company and have great customer service...
Not to call you out on the subject of quality, but hasn't there been some problems with the Crawford HFC's on some cars???? I did some research on the Crawfords and it seems some people have had them crumble apart on the inside..Correct if I'm wrong and again, not trying to start an argument, but if I 'm going to buy a $500+ part, I want to make sure it is a top notch part that will last...I'm sure you understand being a Z enthusiast as you stated.
10-23-2007, 09:45 AM
#92
Banned
iTrader: (12)
Join Date: Jul 2006
Location: Orlando, FL
Posts: 1,393
Likes: 0
Received 0 Likes
on
0 Posts
Berks is the only co. with before and after HFC dyno sheets, haven't seen Crawford or Fast Intentions post dyno sheets... so I'm going with Berks...and Turbo XS exhaust.
10-23-2007, 11:19 AM
#93
Registered User
iTrader: (2)
Join Date: Sep 2002
Location: Nashville, TN
Posts: 379
Likes: 0
Received 0 Likes
on
0 Posts
Let me see if I can answer some of these questions.
The cell count is simply the amount of cells or openings per square inch, i.e., a 400 cell cat will have 400 cells per square inch while a 300 cell cat will have only 300 cells per square inch, so the more cells per square inch the better the flow.
Now we have the debate of whether to go with metal substrate or ceramic. Nissan in their oem cat design has the ceramic cat in front, closest to the engine exhaust manifold, and metal in the rear because the ceramic will hold up to the upstream exhaust heat far better. As I remember 3 years ago, one manufacturer had all kinds of issues using metal cats so close to the exhaust manifold because a lot of them melted down.
Our cats do have ceramic substrate and the 400 cell count per square inch with a much larger cross section than a lot of the other cats available, which means they will absolutely flow more.
As far as the ceramic substrate melting down or cracking yes it can happen if you rev or high rev the engine cold which dumps a lot of excess fuel on them, turbo motors can do the same thing because they run such an excessively rich fuel mixture.
The cell count is simply the amount of cells or openings per square inch, i.e., a 400 cell cat will have 400 cells per square inch while a 300 cell cat will have only 300 cells per square inch, so the more cells per square inch the better the flow.
Now we have the debate of whether to go with metal substrate or ceramic. Nissan in their oem cat design has the ceramic cat in front, closest to the engine exhaust manifold, and metal in the rear because the ceramic will hold up to the upstream exhaust heat far better. As I remember 3 years ago, one manufacturer had all kinds of issues using metal cats so close to the exhaust manifold because a lot of them melted down.
Our cats do have ceramic substrate and the 400 cell count per square inch with a much larger cross section than a lot of the other cats available, which means they will absolutely flow more.
As far as the ceramic substrate melting down or cracking yes it can happen if you rev or high rev the engine cold which dumps a lot of excess fuel on them, turbo motors can do the same thing because they run such an excessively rich fuel mixture.
10-23-2007, 11:26 AM
#94
Banned
iTrader: (12)
Join Date: Jul 2006
Location: Orlando, FL
Posts: 1,393
Likes: 0
Received 0 Likes
on
0 Posts
^^ Thanks for the responze Mr. Crawford. Sounds like your cats are good quality/designed well, but can you provide evidence your cats flow better than Berk (Berks HFCs produced 7.8rwhp and 10ft-lb torque - Metallic HFC)? Can you perform/post before and afters with oem and then your cats on an 07 Z?
Thanks.
Thanks.
10-23-2007, 11:36 AM
#95
Registered User
iTrader: (5)
Join Date: Nov 2006
Location: Seattle (area), WA
Posts: 2,921
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by ZLadie2000
Berks is the only co. with before and after HFC dyno sheets, haven't seen Crawford or Fast Intentions post dyno sheets... so I'm going with Berks...and Turbo XS exhaust.
thanks
10-23-2007, 06:35 PM
#96
Registered User
Join Date: Aug 2007
Location: Plantation, Fla.
Posts: 858
Likes: 0
Received 0 Likes
on
0 Posts
10-23-2007, 08:37 PM
#97
Registered User
iTrader: (5)
Join Date: Nov 2006
Location: Seattle (area), WA
Posts: 2,921
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by BADASSTT
correct me if i'm wrong, but the car in the vid has a nismo exhaust as far as i know
*sorry for jacking crawford's thread
10-26-2007, 06:58 PM
#99
Banned
iTrader: (12)
Join Date: Jul 2006
Location: Orlando, FL
Posts: 1,393
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by ZLadie2000
^^ Thanks for the responze Mr. Crawford. Sounds like your cats are good quality/designed well, but can you provide evidence your cats flow better than Berk (Berks HFCs produced 7.8rwhp and 10ft-lb torque - Metallic HFC)? Can you perform/post before and afters with oem and then your cats on an 07 Z?
Thanks.
Thanks.
10-29-2007, 05:14 AM
#100
Registered User
iTrader: (2)
Join Date: Sep 2002
Location: Nashville, TN
Posts: 379
Likes: 0
Received 0 Likes
on
0 Posts
Sorry we don't have an 07 car to dyno at this time, we do know that on the old cars the cat's dynoed consistently 6 to 8 rwhp. Besides if we did do a dyno on the cats most people wouldn't believe it anyway, because the manufacture preformed it, at least that has been the consensus in the past.