Turbo

[jyotkc]

Has anyone put a turbo in their e-body, more specifically on a 318?

[7212Mopar]

Check this out. I think he is close to be done.

https://forum.e-bodies.org/your-restoration-project-roseville-moparts/10/74-challenger-with-twins/9837/

[Chryco Psycho]

On my 71 Charger I had planned to do 2 of the 3.8 Buick turbos on a low compression 512 lotso of room under the charger hood for plumbing ! I never got there though , I do have the turbos & other parts I had put together but the $$ to build it never showed up .
Of course you can turbo anything , stock pistons would hold up under moderate boost , you would need a different cam , then there is EFI which is far better with forced induction , it would be a fun project !

[ledphoot]

Whenever I hear people discussing Turbos and old Mopar I think of Purple Haze..

[jyotkc]

Wow, looks like a lot of work way beyond my capabilities. Looks like a lot of custom fabricating. I do have the Atomic MSD EFI system already installed though. But I think I'll forget about the turbo.

[Chryco Psycho]

I love the 71 Purple Haze twin turbo Charger !!
I would take the Challenge to add the Turbo , even without an intercooler it would work great .

[Strawdawg]

Turbos are easier as said above with EFI.  The biggest problem is fabrication of the exhaust plumbing.

Normally, at lower boosts an intercooler is not required and EFI makes it easier to set up timing and fueling to keep it all safe.

Spraying methanol or converting the car to E85 allows quite a bit more boost to be run even without an intercooler as the alky is essentially a chemical form of intercooling.  E85 is not readily available in my area so I spray methanol before the throttle body in my Buicks.

Altho theory says one should be able to design a camshaft that makes more power than a conventional cam, I have not seen any real world benefit on street cars. I run a roller cam in one of my cars and the real benefit is that I can get a few more rpm than the flat tappets that cam in the cars which allows my larger turbo to do its job through out the run. 

I have seen several run in the mid tens on the stock cam which is about 195 degs on the intake side of the cam.  A turbo can push a lot of air thru the intake event of even a small, low lift cam.

My experience is that matching the torque converter to the turbo is the most important part of the equation.

As Chryco stated, two of the small factory turbos that were on the 86/87 Buicks would work really well on a BB Mopar.  Probably have to use fender well exhausts due to the lack of clearance under the hood.  Or maybe turn the headers upside down would open up a hole.

[YellowThumper]

Cannot attest to the completed product as I am not yet finished.  But yes you can add boost to factory motor and have it live for a long time. Just need to keep the wick turned down and run lower boost.
Here is my build thread on here if you have a few hours to kill. Lol.

https://forum.e-bodies.org/your-restoration-project-roseville-moparts/10/74-challenger-with-twins/9837/

[Scooter]

Would think a supercharger would be far more straightforward... 

[HP2]

Yes, but superchargers also consume some of the power they generate to create the power they make. They also are somewhat less efficient than turbos.

 

[YellowThumper]

As we are talking old Mopar, kits don't exist. Turbos are mostly plumbing a diy can do at home with basic tools and a mig.
Bracketry for a supercharger then becomes out of range for  most home builds.

[Scooter]

As we are talking old Mopar, kits don't exist. Turbos are mostly plumbing a diy can do at home with basic tools and a mig.
Bracketry for a supercharger then becomes out of range for  most home builds.

Looks like about $3~4k for a supercharger "kit".

http://torqstorm.com/product/small-block-mopar-la-318-360-single-charger/

https://vortechsuperchargers.com/products/paxton-small-block-mopar-carbureted-supercharger-systems?variant=42360266314

Definitely not in my budget.

[Chryco Psycho]

I have run both & lean towards Turbos over superchargers , both have advantages & disadvantages .
Super chargers are instant on but run all the time , turbos can have lag although there are ways to minimize this but cruising down the highway they are not creating boost or causing drag / loss of fuel mileage & can be very efficient so a pair of small turbos from about a 2.6 lt engine even the older VNT type from the 2.2 could work very well on a 318  , I would invert a set of manifolds & put the turbos in front of the heads & move the Alt lower , using poorer flowing exhaust can actually help spool the turbos & decrease lag as the ragged flow can kick start the turbos more than a smooth flowing set of headers .