Nitrous on a 73 street GT??

[paul.catherine]

Hi all,

I am pondering nitrous - I put a roots supercharger (Eaton) on a Miata some years ago and it made it really nice.... I was thinking of a similar thing for the GT I picked up this past spring... just 20-40 or so more horses and torque to pep it up, nothing crazy or for racing....

Then I read a bit about nitrous, and it made me wonder if there exists a mild (and less tough on a 1.9L) Nitrous system anyone has successfully used on their GT? And what experiences... while keeping it simple... like a plate system, etc...

...and if not nitrous, any simple blowers (love the kits) out there? Not as much a fan of turbos, more the supers...

I appreciate any thoughts! I understand the challenges and drawbacks - just wonder what's "out there"....

Thanks!
Paul Shankland
Flagstaff AZ
73 Yellow GT

[hrcollinsjr]

Originally Posted by paul.catherine ... just 20-40 or so more horses and torque to pep it up, nothing crazy or for racing.... Then I read a bit about nitrous, and it made me wonder if there exists a mild (and less tough on a 1.9L) Nitrous system anyone has successfully used on their GT? And what experiences... while keeping it simple... like a plate system, etc...

Years ago when the Chrysler K car reined "King", not, an NOS kit was offered by Direct Connection/Mopar Performance. It utilized an undercarb plate for the Holley 5200, aka. Weber DFV, that was OE on these cars. Claimed HP boost? 50

Harold

[tagger]

I've got a 1972 Buick GS and I've often noticed the "hidden" nitrous kits. They claim to offer around a 20-30 horsepower boost. Similar to what Harold said, they are typically an "Under the plate" design for carbs. You can find different kits for the boost you're looking for. Take a look: http://www.edelbrock.com/automotive_...7000/70027.pdf

[wrench459]

Originally Posted by paul.catherine ... just 20-40 or so more horses and torque to pep it up, nothing crazy or for racing.... Then I read a bit about nitrous, and it made me wonder if there exists a mild (and less tough on a 1.9L) Nitrous system anyone has successfully used on their GT? And what experiences... while keeping it simple... like a plate system, etc...

Nitrous is very hard on pistons,rings and rods due to the tremendous increase in cylinder pressure. I'm not sure the cast parts will handle even small levels of gas. The real power comes from the fuel theres no way I would use a dry shot with a carb.!!!!

I'm wondering if the holley 2 bbl wet plate could be modified?

[gtkid2]

Why not use a nitrous- express wet kit that taps into your intake tube? This is designed for sport compact cars (like the opel).

[wrench459]

20hp shot ROUGH BEFORE TUNING!!!!
5 psi fuel pressure
950 psi bottle pressure
.010 nitrous pill
.010 fuel jet

60hp shot """"" """" """"""!!!!!
5 psi fuel pressure
950 psi bottle pressure
.018 nitrous pill
.017 fuel jet

Both of the above is based on a 4 port fogger wet.

The smallest pill that I can find is the .018.

Another thing to consider is the fuel pressure is under actual running conditions. Thats why the fuel jets needs to be flowed.