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Discussion Starter #1
I am looking for info on pipe size for a v-8. Should I go true duel exhast or single.where to merge the pipes,and what is agood muffler(s) to use. has any one used super trap mufflers on a v-8 and any areas that might cause a clearance or heat problem
 

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Discussion Starter #2
> I am looking for info on pipe size for a
> v-8. Should I go true duel exhast or
> single.where to merge the pipes,and what is
> agood muffler(s) to use. has any one used
> super trap mufflers on a v-8 and any areas
> that might cause a clearance or heat problem
I think that 2 1/2 is good for a streetable v8.
also dual flowmasters would be a good idea, or dual supertraps are good too. but definently dual exhaust is the only way to go.
you should merge the pipes as close to the collector as possible.
any good muffler shop should help you decide what is best.
 

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> I am looking for info on pipe size for a
> v-8. Should I go true duel exhast or
> single.where to merge the pipes,and what is
> agood muffler(s) to use. has any one used
> super trap mufflers on a v-8 and any areas
> that might cause a clearance or heat problem

Never could figure out why people keep wanting to put V-8s into such a well balanced chassis.

Straight line performance is great, but when was the last time we drove our Z's in a straight line for more than a mile?

Maybe I'm all wet, but seems to me a balance of weight should be figured into this equation somewhere.

The Z was designed to take curves with grace by it's original designers, and when you throw the weight bias off by adding a couple hundred pounds to the front end you defeat the suspension.

As a lover of curvy roads, I suggest that the shortest distance between two points is not necisarilly a straight line.

Can't spell either.

Let us not get carried away with horsepower to the point that we lose the spirit of the automobile we all love!!
 

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Re: Okay? Sure!

>Figure this, an extra 100 pounds to the front of the car moved backward to a decent position doesnt seem to hurt my streetable handling enough to bother. So why not have a car that can take curves and the straight line with more horsepower huh? Figure this when you can pull up to a 97-98 transam ram-air, or other F-body sport cars and end up watching them in your rearview mirror during the race, that saves you about $15,000 or so of spendable cash for other things besides sports luxury of '98.

Never could figure out why people keep

> wanting to put V-8s into such a well
> balanced chassis.

> Straight line performance is great, but when
> was the last time we drove our Z's in a
> straight line for more than a mile?

> Maybe I'm all wet, but seems to me a balance
> of weight should be figured into this
> equation somewhere.

> The Z was designed to take curves with grace
> by it's original designers, and when you
> throw the weight bias off by adding a couple
> hundred pounds to the front end you defeat
> the suspension.

> As a lover of curvy roads, I suggest that
> the shortest distance between two points is
> not necisarilly a straight line.

> Can't spell either.

> Let us not get carried away with horsepower
> to the point that we lose the spirit of the
> automobile we all love!!
 

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Re: Good point

> Never could figure out why people keep

You definitely have a goodpoint there!!

Guess my problem is I'm a purist.

I'm a little older. and I still remember the days when my V8 Mopar was blown away by a Straight 6 Triumph on a mountain road because the car with all the H.P. couldn't get out of it's own way when asked to perform in something other than a straight line.
 

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Discussion Starter #6
> I am looking for info on pipe size for a
> v-8. Should I go true duel exhast or
> single.where to merge the pipes,and what is
> agood muffler(s) to use. has any one used
> super trap mufflers on a v-8 and any areas
> that might cause a clearance or heat problem
-----------------------------------------------
I'll offer just a few minor comments from practical experience.

I owned a Scarab 240Z running a 750 double pumper, Stroked LT-1 that put a ****'va lot of power to the pavement that ran flow through dual 2 1/2' 's that crossed at the rear tranny area. It was a total animal or a Z that I would not run other than straight line.

I now run a intercooled, Turbo'ed L28 in a 73 240Z flow'in down and out a single 3 pipe and 3 SuperTrapp with 14 spacers.
The car turns the 1/4 in 13.3 sec, 102 mph in with skinny, hard street tires, and whips through curvy mountain roads with the greatest of ease. From a light most V-8's best me, but from 60 mph very few V-8's can stay with me.

Just some comments from experience, but I remind all that Electromotive did once build a 550 + hp L series engine so be sure you all look at all the options.

For an interesting comparison of V-8's in Z' and dual exhausts you all might look at one of the latest V-8 customs that I am presently writing an article about. It's a gorgous Lexus LS 400, 4 OHC, 32 valve V-8 in a 73 240Z autocrossing convertible with corvette rear look with dual exhausts. Maybe it will give some of you some ideas.
See both images at my main page listed below or go to these URL's

http://www.jps.net/zparts/sidebars/corvette_zrear_m.htm (full roll cage, oval duals, very nimblet handling and silent as a lamb)

Below you will see another autocrosser running a Ford V-8 with the full nine yards of hardware.
 

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Re: Good point

But, from what I understand If you use a Ford V8 you can save something like 40 lbs from the inline 6. The prolbem is I can't find kit for it.

> You definitely have a goodpoint there!!

> Guess my problem is I'm a purist.

> I'm a little older. and I still remember the
> days when my V8 Mopar was blown away by a
> Straight 6 Triumph on a mountain road
> because the car with all the H.P. couldn't
> get out of it's own way when asked to
> perform in something other than a straight
> line.
 

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Discussion Starter #8
Re: Good point

> You definitely have a goodpoint there!!

> Guess my problem is I'm a purist.

> I'm a little older. and I still remember the
> days when my V8 Mopar was blown away by a
> Straight 6 Triumph on a mountain road
> because the car with all the H.P. couldn't
> get out of it's own way when asked to
> perform in something other than a straight
> line.

I think drag racing is boring compared to speeding through winding roads. If I was single with no kids I would trade my ZX 2+2 for 280Z 2 seater. I knew someone that wanted to, because mine has a turbo. I drove his Z and loved the feal of it!
 

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Re: BILL

> But, from what I understand If you use a
> Ford V8 you can save something like 40 lbs
> from the inline 6. The prolbem is I can't
> find kit for it.

I never thought about the V8 being lighter.
Motorsport has a kit for a Chevy installation, but I don't know how engine weight compares with Ford.
I still think the best way to get that extra HP is to modify the L28.
The engine seems to be capable of alot with minimal modification.
 

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Re: BILL

There,s a guy that runs at the same autocross I do. He replaced the I-line 6 in his Big Healey with a 302 and shaved almost 300lbs (healey motors weigh more than datsun motors But you get the idea)
But, keep in mind these V8s can be pulled out of a car just as fast as they go in.

> I never thought about the V8 being lighter.
> Motorsport has a kit for a Chevy
> installation, but I don't know how engine
> weight compares with Ford.
> I still think the best way to get that extra
> HP is to modify the L28.
> The engine seems to be capable of alot with
> minimal modification.
 

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1,633 Posts
Re: weight balance

> Never could figure out why people keep
> wanting to put V-8s into such a well
> balanced chassis.

> Straight line performance is great, but when
> was the last time we drove our Z's in a
> straight line for more than a mile?

> Maybe I'm all wet, but seems to me a balance
> of weight should be figured into this
> equation somewhere.

> The Z was designed to take curves with grace
> by it's original designers, and when you
> throw the weight bias off by adding a couple
> hundred pounds to the front end you defeat
> the suspension.

> As a lover of curvy roads, I suggest that
> the shortest distance between two points is
> not necisarilly a straight line.

> Can't spell either.

> Let us not get carried away with horsepower
> to the point that we lose the spirit of the
> automobile we all love!!

Wrong, Wrong, Wrong......Have you ever driven a properly transplanted V8? Probably not. Some people tend to think of the current crop of transplants and remember the Scarabs of old. They were very poor handling vehicles. Talk to anyone with a V8 installed with a JTR kit and you will see near 50/50 weight distribution if you use aluminum heads,intake, waterpump and accesories where possible. And if done properly with a little planning and patience you will have a car that is well balanced and has a **** of a lot more torque and HP than the most radical Z motors out there. My conversion using a brand new 383 stroker crate motor and a T56 6 speed cost less than building my last hipo inline 6 motor and that thing was fast compared to other inline 6's out there. But there is no way that you can get as much bang for the buck performance as doing the v8 transplant, and if you think so you are nuts. Show me a reliable 500+ hp 450lbs torque 6 cylinder with a 6 speed built for less than 7K and I'll give you mine!
 

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Re: weight balance

> Wrong, Wrong, Wrong......Have you ever
> driven a properly transplanted V8? Probably
> not. Some people tend to think of the
> current crop of transplants and remember the
> Scarabs of old. They were very poor handling
> vehicles. Talk to anyone with a V8 installed
> with a JTR kit and you will see near 50/50
> weight distribution if you use aluminum
> heads,intake, waterpump and accesories where
> possible. And if done properly with a little
> planning and patience you will have a car
> that is well balanced and has a **** of a
> lot more torque and HP than the most radical
> Z motors out there. My conversion using a
> brand new 383 stroker crate motor and a T56
> 6 speed cost less than building my last hipo
> inline 6 motor and that thing was fast
> compared to other inline 6's out there. But
> there is no way that you can get as much
> bang for the buck performance as doing the
> v8 transplant, and if you think so you are
> nuts. Show me a reliable 500+ hp 450lbs
> torque 6 cylinder with a 6 speed built for
> less than 7K and I'll give you mine!
You'r sure a believer Mike. You've allmost got me convinced!

I'd love to drive your car.

Tell you what, if your ever South Carolina way and end up in Myrtle Beach let me know and I'll buy you a beer and let you show me.
 

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Re: weight balance...Sorry but...

> You'r sure a believer Mike.
> You've allmost got me convinced!

> I'd love to drive your car.

> Tell you what, if your ever South Carolina
> way and end up in Myrtle Beach let me know
> and I'll buy you a beer and let you show me.

You struck a nerve. I get calls from all over the country about how to build a Z motor that will beat a 5.0 mustang or Camaro and you CAN with a 6 cylinder, but not cheap, and not without eventually severely abusing parts. This is why after 10 years of building 2.8's, I have given in to the urge and built a V8 Z. There is no replacement for displacement. It came with a lot of research and driving a few of the conversions, two nightmares and one well balanced properly done car (As Don Potter claims in the article A V8 Z can be a work of art or your worst nightmare). Nothing compares to an S*** load of torque and HP properly placed in a 2500# car with LSD and wide sticky tires. I now have a car that will absolutely annialate a Viper and handle better than a Ferrari and it looks better doing it. For all the purists out there, do your own thing but don't knock me for wanting my cake and eating it too!!! I now have the car Nissan should have built.

Cheers!
 

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Re: weight balance

> You'r sure a believer Mike.
> You've allmost got me convinced!

> I'd love to drive your car.

> Tell you what, if your ever South Carolina
> way and end up in Myrtle Beach let me know
> and I'll buy you a beer and let you show me.

You're on Motorhead. I'll drop a note to this BB when I come thru town... I go thru Myrtle beach every once in a while! Send me some Email .....
Cheers!
 
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