Nissan 370Z Forum - MOTORDYNE ART Pipes

Nissan 370Z Forum (http://www.the370z.com/)

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- - MOTORDYNE ART Pipes - Review (http://www.the370z.com/intake-exhaust/29381-motordyne-art-pipes-review.html)

Quote:

Originally Posted by F.I. Inc. (Post 1461960)

It is not normal and if it is faulty, I will send you out a new side free of charge. When we spoke last I needed you to troubleshoot and figure out if it was the cat or the resonator. From you last correspondence I now know it is the cat.

The cats are consisted of a 300 cell metallic core with a spun stainless steel case. The case slides over the core and than is necked down on each side to lock the core in place. Sometimes (but very rare) the core might start to move back in forth inside the case. We are talking 1/8"-1/4" TOPS! It can and never will come out of the case! Now the stainless steel expands and contracts with thermal cycles of the car. When it gets hot it expands, when it gets cold it contracts. The metallic core does not expand or contract.

Now as far as the rattling noise you hear, I do not know what that is. You are 15,000 miles away from me and I would need to hear a sound clip to pinpoint it.

I can tell you our cats are extremely high quality. They do not throw a CEL light when installed properly. They make great power and I have customers cars with 75,000+ miles on them.

Now sure can one go bad, it is a possibility. I can count on less than one hand how many have had an issue over the years. For the hundreds if not thousands that we have built and sold, I will take those percentages any day.

I will PM this directly to you as well, so we can get it rectified...

Thank you & Happy Holidays,

Tony

You will get my PM with sound clip soon .

Quote:

Originally Posted by ronn1 (Post 1462237)

I see you live in UAE where AVERGE YEAR TEMP is around 95F or so. In fact, from May to Sept, the Ave is 100F. I wonder if that has something to do with your problems? Just a thought.

Installation done on 01/10/2011 , averge temp was 98F (37C) . I dont think its because temp , maybe from production.

Quote:

Originally Posted by ronn1 (Post 1462237)

I see you live in UAE where AVERGE YEAR TEMP is around 95F or so. In fact, from May to Sept, the Ave is 100F. I wonder if that has something to do with your problems? Just a thought.

What does UAE's weather have to do with the heat produced from engine??:confused::confused:

Quote:

Originally Posted by advan37 (Post 1462508)

Installation done on 01/10/2011 , averge temp was 98F (37C) . I dont think its because temp , maybe from production.

Well, this problem isn't very common at all and that factor seems to be something to consider. Consistant high ambient temps do stress the car in general..especially one that's high performance and driven hard. Hope you get the problrm resolved though.

Quote:

Originally Posted by G37sHKS (Post 1462804)

What does UAE's weather have to do with the heat produced from engine??:confused::confused:

If you don't think an AVERAGE yearly temp of close to 100*F doesn't stresss the motor and everything else, I suggest you do some research. Much harder to keep engine temps (exhaust system as well) within optimal ranges.

^ :shakes head::shakes head:

Quote:

Originally Posted by ronn1 (Post 1462835)

Can you elaborate on these stresses, please? I'm also interested in a link to the research you mentioned.

Installed the version 3 pipes today. Went pretty well, broke an extension and a socket. Installed with no gasket only RTV per Tony.

The brace didn't line up with the new tabs on the pipes, so I had to grind on the bracket. So the fit isn't perfect. The fit to the manifold and exhaust is good.

Didn't start it up yet. Waiting on the rtv to dry.

Just got done taking the car for a test drive. The car almost sounded stock below 3k. Got a little louder above 3k to redline, but still very quiet. I'm happy with the sound. Didn't notice much performance increase, but I only went around the block, was able to redline though. There is a little hiss when letting off the throttle, but that doesn't bother me at all. With the windows up the car sounds stock. No rattles and no weird noise. No fumes unless at a light, but very faint and not intrusive. All and all I'm happy with the pipes. I'm going to dyno on the 7th. Hope to break 300whp!

New year, new update on exhaust?

Quote:

Originally Posted by 370Z JT (Post 1473193)

New year, new update on exhaust?

The facebook page has video's of the exhaust mounted and car driving, but no pics or write up that I've seen?

Kool. Will check it out.

Man I want to jump on the presale but cant commit without seeing the final design.

Yes, pictures and details will be posted before production is completed at the end of the month.

Quote:

Originally Posted by Flyboy (Post 1468317)

Which side did you have trouble with the tab, one side or both? The hole in the tab can be made a little larger in diameter to accommodate more car to car variability.
Would that have done it for you?

Thank you,
Tony