Forum: C4 ZR-1 Technical Postings
2 Weeks Ago
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Replies: 17
Views: 523
Re: Solution for B&B Exhaust Drone?
Two resonators?
#IDTS
You will be better off #IMO with a used a C4 LT4 exhaust cat back system (2 3/4" vs 2 1/2") and replace the LT4 resonator with a x pipe ane with the x pipe as close to the...
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Forum: C4 ZR-1 Technical Postings
2 Weeks Ago
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Replies: 17
Views: 523
Re: Solution for B&B Exhaust Drone?
Yes I have the old style B&B the resonator is an x pipe but I swapped in a true x pipe. It did minimal for the drone but imo it's not that bad. I like my car loud so it's no big deal.
The new B&B...
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Forum: C4 ZR-1 Technical Postings
3 Weeks Ago
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Replies: 17
Views: 523
Re: Solution for B&B Exhaust Drone?
Either upgrade to their new system or try this. I deleted my resonator and installed an x pipe but have not done the NPP mod.
https://www.zr1.net/forum/showthread.php?t=22512
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Forum: C4 ZR-1 Technical Postings
3 Weeks Ago
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Replies: 30
Views: 3,143
Re: Headers
"Sorry, this item is out of stock"
Those went quick!
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Forum: C4 ZR-1 Technical Postings
3 Weeks Ago
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Replies: 22
Views: 1,520
Re: Continuing angst... headers today...
I have had OBX headed on both my cars. They touched the steering rack on my '92 and Pete dimpled them during installation.
My '93 did not require any clearance for the steering rack.
FWIW both...
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Forum: C4 ZR-1 General Postings
4 Weeks Ago
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Replies: 3
Views: 242
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Forum: C4 ZR-1 General Postings
03-08-2024
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Replies: 26
Views: 1,235
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Forum: C4 ZR-1 Technical Postings
03-04-2024
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Replies: 15
Views: 3,874
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Forum: C4 ZR-1 Technical Postings
10-25-2023
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Replies: 12
Views: 2,934
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Forum: C4 ZR-1 Technical Postings
10-24-2023
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Replies: 12
Views: 2,934
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Forum: C4 ZR-1 Technical Postings
06-22-2023
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Replies: 38
Views: 3,096
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Forum: C4 ZR-1 Technical Postings
06-15-2023
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Replies: 38
Views: 3,096
Re: After Market Air Filter Housing Question
IMHO you really don't need the instructions. If you want to cut the housing just trace it and take your time cutting as to not damage the air conditioning condenser.
The rest is a standard cut air...
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Forum: C4 ZR-1 Technical Postings
06-15-2023
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Replies: 38
Views: 3,096
Re: After Market Air Filter Housing Question
Looks like yours came with the air scoop. I have had two and neither came with it.
You can see how the air filter is fully exposed and the housing cut for the air filter.
Similar to the...
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Forum: C4 ZR-1 Technical Postings
06-15-2023
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Replies: 38
Views: 3,096
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Forum: C4 ZR-1 Technical Postings
09-09-2022
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Replies: 26
Views: 2,974
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Forum: C4 ZR-1 Technical Postings
09-09-2022
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Replies: 26
Views: 2,974
Re: 0W40?
I am using Mobil 1 Formula M 5w40 with no issues.
The European motor oils appear to have more zinc and phosphorus.
Car runs great and this is used in my 401 cid LT5. I chose this weight combo...
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Forum: C4 ZR-1 Technical Postings
08-31-2022
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Replies: 2
Views: 309
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Forum: C4 ZR-1 Technical Postings
08-16-2022
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Replies: 21
Views: 2,452
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Forum: C4 ZR-1 Technical Postings
07-21-2022
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Replies: 21
Views: 2,452
Re: Exhaust doubts
Lots of options......if you want to minimize your cost then I say use a '96 LT4 car exhaust (2 3/4") and replace the resonator with an x pipe and swap on a set of headers.
If no budget then b&b 3"...
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Forum: C4 ZR-1 General Postings
07-07-2022
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Replies: 36
Views: 4,153
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Forum: C4 ZR-1 Technical Postings
06-29-2022
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Replies: 20
Views: 1,207
Re: Plan. B if I can't get Amsoil Z-Rod?
I am using Mobil 1 Formula M 5w 40 motor oil purchased from Napa. There is a QR code scanner on the label to confirm authenticity.
It is the same mineral content at the 5w 50 as tested here.
...
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Forum: C4 ZR-1 Technical Postings
06-23-2022
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Replies: 15
Views: 1,228
Re: Overheating issues.
Is your water pump going out?
How did you burp the cooling system? You need to get the fluid level above the black fill tank with a large full funnel or such and bring up the rpms.
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Forum: C4 ZR-1 Technical Postings
06-14-2022
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Replies: 51
Views: 4,242
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Forum: C4 ZR-1 General Postings
06-11-2022
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Replies: 8
Views: 961
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Forum: C4 ZR-1 General Postings
05-27-2022
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Replies: 24
Views: 2,654
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