1977 MGB 4 Cylinder 1.8L Dyno Run - Minneapolis Classic British Sports Car Shop

Visit us at: http://bmcautos.com

Video Description:
Dwight's 1977 MGB Dynamometer run with plenty of motor upgrades. I-4 1798CC + 0.045" over Forged pistons somewhere beyond 10 to 1 ratio, VP12 camshaft, 1.73" Intake valves, lightened flywheel, Electromotive DIS, HS4 Carbs- and you will just have to run the video to find the rest and the POSTED results. Most people give claims and not the actual sheet. This video shows the actual results at the end. The video in front of it gives quite a bit of what we were doing during the engine break in procedures.
Dyno was ran at Performance and Dyno Tuning Experts, http://www.hitechmotorsport.com

Category:

Autos & Vehicles

Tags:

• 1977
• MGB
• I4
• Dyno
• Run
• V6
• V8
• 13B
• MG
• BGT
• MGBGT
• Midget
• Sprite
• Spridget
• supercharger
• Hitech
• Motorsports
• Inc.

[1971mgb]

Cool. Building a LZ9 3.9 late model gm V6 for transplant this winter.

275 HP and ford T5.

Old engine will go into an Improved C class autocross.

Nice work again on that engine!

[BMCC75]

@1971mgb

Thanks! We install all types of engines in MGBs. The most popular to this day is the 1993-1995 Camaro L32 3.4L V6. In its stock form, it leaves even built and supercharged MGB engines in the dust.

[BMCC75]

@MGBCalendar

No problems!

The point of this video was to have fun & show what the days result was. Not claiming the greatest results. Just facts.

My Request is that anyone running their car or engine on a dyno post results. NOT just a sale man's pitch " This much power" but an actual dyno chart/graph that actually gives proper Power AND Torque curves. You can learn a lot by looking at the complete chart. Too many are not willing to post.

Find a place to post your results online permanently.

[MGBCalendar]

@BMCC75

FWIW you don't believe me. Ok. Fine. I am not peddling engine upgrades I sell MGBCalendars.

I have nothing to gain or lose relative to your video, and no way to post my Dyno results here.

You do not believe me. So what now?

[BMCC75]

@MGBCalendar

Your not going to see double digit increases in torque on modified engines. Modifying an engine will gain plenty of BHP but not huge amounts of torque.

You have to look at is the --Complete Graph-- NOT just the salesman's bragging one point of Peak BHP/Tq. In other words, sure you have the power and torque claimed, that I can see BUT!!! Publicly post your dyno results online! No shame in any numbers but a big shame to not post. This is what we have, thats what we're showing. :-)

[MGBCalendar]

@BMCC75

Well let's see...

4000 pound roller... check

At least now you have more HP and Torque than in the video.

I would trade a few horses for a few ft pounds.

Your car wasn't happy pushing the roller? Shouldn't have been a problem with good tires and it should have pulled solid all the way up the RPM scale.

I also noted you did the test in third rather than fourth.

Different Dynos Different Days but they should still be ball park.

Lots of toys on that engine for 5 foot pounds of torque.

[BMCC75]

@MGBCalendar

Different dynos different numbers! A stock low comp motor like yours should not come across the 4,000 lb rollers that this car was on giving those numbers. Our needles were played with more on later tests which dyno'ed with a little more more BHP and Tq. To double the stock BHP to the rear wheels of your car which should already be above stock is really good. Reality is all engines have a certain point they can reach within reason. We publicize our results. How about everyone else?

[MGBCalendar]

Geez mine is stock engine with a Weber 32/36 and I laid down 50HO and 89 ft Lbs of torque. That's a lot of work and money for not much improvement.

Someone somewhere didn't do something right and by the way it doesn't sound right at idle.

[BMCC75]

@1971mgb

The rubber bumpers were gone as of that writing but not as of the video.

All smog gone, misc. bits and pieces, soft top is now a storable, not a foldable type, small steps. Weight is approximate.

Comparably, I can tell you that the V6 MGB we built only weighs in at 2250 with a full tank of fuel and has far more added to it than this one.

Thank You.

[1971mgb]

What did you do to get the cars weight down to 2100 pounds?

On the best of days a rubber bumpered MGB tips the scales at over 2300 dry.

What did you remove or replace? Fiberglass fenders,etc.?

Very nice output for a non stroked 18V