I want Q45 headers! Ceramicoated mandrel bent headers!

[dareo]

Who do you gotta blow to get some sweet headers for the G50? Nobody makes headers correct me if i'm wrong? I want to unlock the VH45DE's true sound and power with a high quality intake header and exhaust but nobody makes the $%$#$% headers as far as i've searched around. Is it all custom work to get headers? I know some of you Q tweakers out there have em, how much $$$ did it take and who built them?

[PoorManQ45]

Who do you gotta blow to get some sweet headers for the G50?

You will be kneeling in front of rsiwicki.

[elwesso]

IIRC Rob spent about 3grand for his custom headers.....

[AZhitman]

BRM has headers AND a catback for the G50.

Rob has them on his car and they are indeed incredible.

Be prepared to take out a loan, however, as they are pricey. Not quite 3K, More like $1600 for the headers and $800 for the custom catback.

[dareo]

hmmm $2400 bucks for header back exhaust? Maybe in 2005 i can shell out that kind of money on the Q. I still have to finish pimping my 240sx out.

[HeavyDuty]

No offense, Dareo, but this thread is a perfect example of why there's not support for this vehicle.

Your first post sounded like you were licking your lips & had a burning checkbook in hand.

The response to AZ's post then turned to "Oh, ok, now I know who makes them."

Same as the diff, the supercharger, a turbo, cf driveshaft. Everyone claims they want these items, no one steps up when they're offered.

Same thing happened when a supercharger was being considered for the Acura TL-S & CL-S. Thirty confirmed orders on release turned into three or four initially and maybe 18 since release two years ago.

I'm not trying to slam you or single you out, it's just the nature of this business. That's why manufacturers build a prototype & sometimes wait for a year to release a new product. I think they log the amount of interest before they commit to tool up costs even though they claim the unit in question is in development. I sure would.

[pito11213]

Heavy Duty I understand completely what you are saying but I mean damn....$1600 for headers. The $800 for the catback exhaust I understand that sounds more reasonable. I think if people see proven results then the turnout would be better.

If you have headers and such how about a video so people can hear the car. How about pictures of the actual item. How about dyno numbers so we could see the effectiveness of the product. No one would buy something if they didnt at least get an idea of the benefits.

[Rex]

There are (or were) vids of rsiwicki's Q with the headers and 4.08 diff in an older thread.

[1992Q45A]

I think a supercharger would be the best mod ever for the Q.

If you search google for lexus + superchargers, you would see why it would be 10x easier to get one for a Lex of any variety.

Everything on the Q is proto, and therefor labor outweighs the initial cost of said component

[pito11213]

Sure the supercharger would be good but that is what $5000? I would love to see a Q run with a SC on it. I could only imagine how fast it is. But a SC would require that your stock car is near OEM perfection.

[AZhitman]

Ryan is absolutely right, as is Heavy.

But since you asked, here's a pic of the headers.

[1992Q45A]

I think the headers are worth it

For sure, look at those sexy beasts

[1992Q45A]

Once my ride is running in top top shape, they will be on my Q

[rsiwicki]

I don't think Greg(AzHitman) has a different shop than the shop I had do the headers so that being said the shop will need my car again for a week or two to build a copy of the headers. Yes...the fabricators are that slow as it took 5 weeks for my headers to be built as I spent close to $3,000 when consideer all costs including rental car. So consider that for a copy of my headers to be made that means I must be without my car so those costs have to be factored as well or you can find your own shop if you think you can get it done for better/cheaper and if you can find another shop then great as the more resources we have the better.

Ohh....and you have to be ready to spend another $500 at least to have them installed as the engine mounts and AC compresor have to be unbolted/removed to install the drivers side due to the steering column shaft. So something would have to be worked out for the costs of the removal and reinstallation of my headers as well as the loss of use of my car so costs will be much more than $1,600 unless BRM is picking up those costs, but I doubt anybody else besides 1992Q45A will buy a set of headers as there are too many day dreamers.

As far as performance goes...well the car really moves nicely now but it is illegally fast becuase I have no cats or EGR.

[1992Q45A]

Indeed.

Unfortunately Headers will be the most exotic mod I will have. Until someone else puts a blower on, and can provide a kit with detailed install instructions, and I can find a shop who loves my car, it will just never happen

Headers I want for the sound and the HP improvements.

Considering Stillen got 318 HP out of a Q with Exhaust and ECU, hopefully with headers we can see Qs with around 330 HP

330 Is a ton of HP. I would be satisfied. I know our 0-60 times will always suck compared to modern vehicles, but our cars will be rocket ships on the freeways..

If I can have the same luck as Rob did racing XJRs, then I will be happy

[rsiwicki]

just an fyi on the xjr/xkr.....jag was using an different scale of HP measurement that overstated the HP so the 97-2003 4.0 supercharged jags are actually only running about 354hp vs. the initially claimed 380hp. Only 354HP on a SC 4.0 liter engine just does not do justice.....

[HeavyDuty]

Pito, not to compare apples/oranges, but....

A very popular car, the Acura TL-S & CL-S has headers offered by Comptech. If you don't know the history of Comptech, suffice it to say they built the Indy motors for Toyota, and Oldsmobile (Aurora V8's) as well as everything from OE approved supercharger systems for NSX's down to the lowly Civic EX header.

The V6 headers for a CL/TL-S are $1249.

They have 100 or 1000 times the market share for that product vs Q.

Good headers for a 98-02 freakin F Body (Camaro/Trans Am) are $1400. Pardon my spelling but I think they're called Groehteohahn.

Same with the C6 (working on one now)

So to answer your question, AZ's headers are a steal for the time & expense (tool up costs) involved. AZ would have to sell 50 sets of these to offset the out of pocket expense it took to design the prototype. That means he'll NEVER break even. At $1600 it's a favor.
Modified by HeavyDuty at 8:38 PM 10/3/2004

[1992Q45A]

Jebus RSI, is that really true?

I mean the 1/4 is nice at high 13s, but the top end was weak

They really didn't have 390 hp?

[HeavyDuty]

Yup, that's what a steady diet of tea & crumpets will do to you?

They're small horses, shetland ponies, to be precise.

[rsiwicki]

yep....just about 354hp. Something about NET SAE ratings scale that the US gov't or somebody else caught them on overstating the HP numbers and made them revise the numbers downward. I think in England they use a different HP measurement scale but not sure. Just something I picked up from a person bitching about the freeway power or lack of it on the xjr forum. The xjr is blistering fast from 0-60 with times of 5.2-5 secs but 1/4 @ 13.6-7 secs puts my car as fast if not faster from 60mph on...

I had to give my car every ounce of juice (holding gearing longer), but I hanged right with the XJR from about 60 to 120mph

[rsiwicki]

The below explains a little better about the over rated HP ratings from Jag....

Remember when Jag claimed the S-Type R had 400 (or maybe it was a touch over 400) horsepower? But it didn't, at least not by SAE NET standards. It was revealed that Jag was using the european DIN spec horsepower ratings for the S-Type R, which put it over 400. Then they revealed that they had been using DIN horsepower ratings on ALL their cars, i.e. the "290" horsepower AJv8 and the "370" horsepower supercharged AJ-V8. So when they were found out, they converted to SAE net. The 4.0 supercharged V8 went down to around 353ish horsepower with SAE Net ratings, adn the 4.0 N/A engine went down to 280 or below.

[1992Q45A]

WTF. this is scandalous and outrageous

Have they noted this on there website

wtf is going on here

i cant wait to drop this bombo n my friend

[rsiwicki]

Jag has restated some if not all the HP ratings on their US website. This is almost as sad as the Monte Carlo SS that tried to race me today....that thing is SC also but as soon as we went at it and I started pulling he let off immediately and just sat back there not wanting any more. I have been having some fun last two weeks with some races....but I had a damn WRX try to see if I wanted to play on the freeway but without my 4.08 there was no way I was going to play with him.

[rsiwicki]

here it is from the jag site....took a little while to find it. when you tell your friend...give him a Corona as well to help sooth his pain now knowing that the his hp rating was just dropped by over 30HP.

Engine Supercharged 90 Deg V8 Displacement-Liters 4 4 Max HP (SAE) 358 @ 6150Max Torque (SAE lb.ft) 372 @ 3600Transmission Type 5 speed automaticDrivetrain Front engine, RWD

[1992Q45A]

Where are you finding this

I mean the new XJR has slighty more power to... Is that for the NEW XJR?

I can't believe this!

[HeavyDuty]

I did some *minor* exploratory intelligence on one from loan from Collier Jaguar in Orlando.

It felt like a Barcolounger on wheels. (sp?)

Lots of grunt from a stop, big YAWN from a roll.

BrabhamMan, tell your bud I have a K&N lying around for $20, also a reworked crank pulley is at ASPRacing.com. An extra 2psi may help to soothe the pain.

Also, he may find solace an any group of RX-8 owners.

[rsiwicki]

it is for all the 4.0 liter SC jags so from 1998 to 2003. It is on the jag us website, under preowned and then under compare models in the model library.....pretty pathetic that it is only 358HP. your friend is going to need some tums as well to stomach the pain. but the good thing is that since HP is a major factor in insurance charges he should be getting a discount or a refund for having less HP than previously stated, but I seriously doubt that he would ever be able to get a single penny from his insurer.

[rsiwicki]

still looking for a M45 to race...my neighbor will not race me know in his M45 after he went for a ride in my car...he said that 0-60 no problem...but after 60mph he thought my car would be chasing him down pretty damn quickly....

[1992Q45A]

You're right!

I just checked their website, dude that's seriously lame, anyway you cut it.

Does that mean their NA v8 was way under 290 hp, or does that mean the blower only added about 60 hp?

Either way I know that thing was weak, and the VH was a WAY better engine then the AJ

Thanks rsi, this is crazy news

[rsiwicki]

they rate the NA at only 280HP still which means the SC only added 78HP. I would have thought the SC would have added at least 100HP but they changed a lot of engine internals such as compression and numerous other things with the addition of the SC.