VQ30 Headers/ Do they fit on VQ35?
Supporting Maxima.org Member
Joined: Dec 2004
Posts: 1,183
From: Atlanta, GA
What are the best headers for VQ35 swap? I know VQ30 heads are out of the question, but would you use VQ35 Heads, Cattman VQ30 heads, or whatever 5th gen modders use to aftermarket their heads??????????
Originally Posted by nismology
What improvements have been made with the new batch of Cattmans?
Originally Posted by email from Brian Catts
Although the first prototype made great power (average HP from 3k-6.5k increased 5HP over the previous design) it sounded terrible, so we built a second unit from scratch and it regained the incredible sound of the New Zealand-designed original.
We will be selling the first 25 units at $850, including the installation kit. I’ll note that for a $25 increase in price over the previous NZ version, we’ve been able to make these critical upgrades:
1. Ceramic-coated mild steel to 304 stainless;
2. MIG to TIG welding;
3. Swaged tube to hand-built 3-1 collectors;
4. 10mm to 12mm head flanges; and,
5. Consistently formed mandrel bent tubing.
We will be selling the first 25 units at $850, including the installation kit. I’ll note that for a $25 increase in price over the previous NZ version, we’ve been able to make these critical upgrades:
1. Ceramic-coated mild steel to 304 stainless;
2. MIG to TIG welding;
3. Swaged tube to hand-built 3-1 collectors;
4. 10mm to 12mm head flanges; and,
5. Consistently formed mandrel bent tubing.
Supporting Maxima.org Member
Joined: Dec 2004
Posts: 1,183
From: Atlanta, GA
LOL wow I am dumb ... I thought heads and headers were the same thing. Can someone explain to a noob? I have been on the org for a while and never knew.
But from what I can guess, the best combo would be 3.5 heads with 3.5 aftermarket headers?????????
But from what I can guess, the best combo would be 3.5 heads with 3.5 aftermarket headers?????????
Originally Posted by scrhale
LOL wow I am dumb ... I thought heads and headers were the same thing. Can someone explain to a noob? I have been on the org for a while and never knew.
But from what I can guess, the best combo would be 3.5 heads with 3.5 aftermarket headers?????????
But from what I can guess, the best combo would be 3.5 heads with 3.5 aftermarket headers?????????
Headers are the exhaust manifolds. The piping that connects to the heads for the exhaust. Aftermarket headers with the 3.5 swap will make the most power, though it's debatable how much more power they make than a 3.0 header/y-pipe combo.
Originally Posted by MaxObesset
i was wondering if u could also u the vq3.5 stillen header on the 3.5 swap also
http://forums.maxima.org/showthread....7&page=1&pp=30
Here's a dyno of stillin versus hotshot. hotshot in blue, stillin in red. The cattman headers make a few more ponies than the hotshots.
Newbie - Just Registered
Joined: Nov 2008
Posts: 3
From: Huntsville, AL
Hate to resurrect an old thread and all, but it popped up in Google search.
I was wondering, if this is true, will the 2002-2003 3.5 Maxima full exhaust systems fit on my 2000 3.0?
Is the piping the same under the car?
Greatly appreciated,
- Byrdboy
Edit: Mainly, can I switch out my 3.0 headers for 3.5L aftermarket headers and have it mate up with my current 3.0L system? That's what my main goal is.
I was wondering, if this is true, will the 2002-2003 3.5 Maxima full exhaust systems fit on my 2000 3.0?
Is the piping the same under the car?
Greatly appreciated,
- Byrdboy
Edit: Mainly, can I switch out my 3.0 headers for 3.5L aftermarket headers and have it mate up with my current 3.0L system? That's what my main goal is.
Last edited by byrdboy; Jun 26, 2009 at 12:06 AM.
What headers are you specifically looking at?
Newbie - Just Registered
Joined: Nov 2008
Posts: 3
From: Huntsville, AL
The OBX 02-03 headers. I heard Cattman headers were the way to go, but I can't find any and do not know how much they cost.
My Maxima is a 2000 model so you are correct in your assumption. How would it react to loosing EGR? Probably throw a code if I lost the equipment?
Also, any ideas on how to go about getting a block off plate? Machine one myself, buy one from a salvage yard, figure it out myself?
Edit: Why wouldn't I get to keep the EGR?
My Maxima is a 2000 model so you are correct in your assumption. How would it react to loosing EGR? Probably throw a code if I lost the equipment?
Also, any ideas on how to go about getting a block off plate? Machine one myself, buy one from a salvage yard, figure it out myself?
Edit: Why wouldn't I get to keep the EGR?
Last edited by byrdboy; Jun 28, 2009 at 03:18 PM. Reason: Clarification
The OBX 02-03 headers. I heard Cattman headers were the way to go, but I can't find any and do not know how much they cost.
My Maxima is a 2000 model so you are correct in your assumption. How would it react to loosing EGR? Probably throw a code if I lost the equipment?
Also, any ideas on how to go about getting a block off plate? Machine one myself, buy one from a salvage yard, figure it out myself?
Edit: Why wouldn't I get to keep the EGR?
My Maxima is a 2000 model so you are correct in your assumption. How would it react to loosing EGR? Probably throw a code if I lost the equipment?
Also, any ideas on how to go about getting a block off plate? Machine one myself, buy one from a salvage yard, figure it out myself?
Edit: Why wouldn't I get to keep the EGR?
Of course you could have the EGR bung welded on.
Yes, it would throw EGR codes. It's likely that you could trick the ECU such that it doesn't throw the codes, though.
You could find the UIM block off in the classifieds from a partout, or in the junkyard, or make one yourself.
Or you could just get it brand new;
Plate:
14017-4Y900, $13.53 each at Courtesy
Gasket:
14722-2Y000, $7.52 each at Courtesy
The OBX 02-03 headers. I heard Cattman headers were the way to go, but I can't find any and do not know how much they cost.
My Maxima is a 2000 model so you are correct in your assumption. How would it react to loosing EGR? Probably throw a code if I lost the equipment?
Also, any ideas on how to go about getting a block off plate? Machine one myself, buy one from a salvage yard, figure it out myself?
Edit: Why wouldn't I get to keep the EGR?
My Maxima is a 2000 model so you are correct in your assumption. How would it react to loosing EGR? Probably throw a code if I lost the equipment?
Also, any ideas on how to go about getting a block off plate? Machine one myself, buy one from a salvage yard, figure it out myself?
Edit: Why wouldn't I get to keep the EGR?
Or just call Brian Catts at 520.575.6195.
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