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Dyno measurements .. RWHP and RWTQ

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Bob,

As you know the sources for hi-performance Healey six parts are limited to the usual suspects, Dennis Welch, Cape Int'll, AH Spares, all in the U.K. I've found a lot of inconsistence with quality of some of the race parts these sources handle, not to mention turn around time freight, freight, etc. I do still use them a lot though may first choice is to find a U S supplier. That said, Kirks for great HD valve springs and timing chain ( same as MGC) https://www.kirks-auto.com/MGC/MGC_HeavyDutyValvesSprings.html. His springs are 112lbs. at the seat install at 1.605. Way cheaper then Welch, great quality, very help.

Forgot to mention, if you haven't done so, change out your cam followers to MGC bucket style, and get new longer light weight push rods, source: https://www.pushrods.net/onepiece.html


Dougie
 
Dougie, that is really strong for a reasonably conservative engine!!! Congrats! Can you post the graphs? It would be fun to see the build and cross over of hp/tq.

Cheers,
Steve
 
HealeyPassion said:
Dougie, that is really strong for a reasonably conservative engine!!! Congrats! Can you post the graphs? It would be fun to see the build and cross over of hp/tq.

Cheers,
Steve
Click to expand...

Steve - Here's the charts, I'll have to scan the graphs. The first is "corrected" the second is not.

Dougie
 
Bob_Spidell said:
Wow, that is impressive. Looks like you're running fairly lean to boot.
Click to expand...
Ya, we shaved the last 1/3 of the needles down to get where we are. My dyno tuner liked the results, so we stayed with it.

Here's the results in graph form. First one is the final for the new rebuild and the second is this year vs. last year.

Yes, I do have a new neck brace for this years race season.

Dougie
 
Well that's a confusing chart in black and white. :smirk:
 
GregW said:
Well that's a confusing chart in black and white. :smirk:
Click to expand...
Oops - I realized I scanned it on the POS copier at work. You should be able to interpret the first graph ok though.

Dougie
 
What hind of dyno? I used a "Dynojet"dyno for 5 years at a turbo shop here in town,if I read you A/F ratio's right, I would have never kept making runs, any performance engine, in my experience(which is 100's of runs, with everything from twin turbo corvette's to supercharged& normally aspirated hot-rods)anything above 13.5 A/F(11.5 or 12 forced induction) & you will not be making optimum power& torque,plus if over 14.7 you risk engine damage-the higher the # the sooner the damage. cheers Genos2
 
Thanks for the input Geno..................I have to trust the experts at Loynings Engine Service here in Portland, OR. They've been doing this for quite a little while and have a stellar national reputation in the "vintage race car" community. Their equipment is the SuperFlow WinDyn, https://www.loynings.com/Chassis%20Dyno.htm

Dougie
 
Hhhmmm, looking at the comparison graphs....with that new found power at the top end you may be changing your driving style a bit.

Have fun and be safe out there.

Cheers,
Steve
 
HealeyPassion said:
Hhhmmm, looking at the comparison graphs....with that new found power at the top end you may be changing your driving style a bit.

Have fun and be safe out there.

Cheers,
Steve
Click to expand...

I usually just share my racing exploits on the racing forum but thought some of you true Big Healey lovers might enjoy the view :

https://www.youtube.com/watch?v=rfUYVX9GTpc

Great weekend at the HMSA Portland Historics, still "fine tuning" though the Big Dog loves to run.

Dougie
 
Hello dougie,

I enjoyed the youtube but had to turn the sound down because it was 12:30 am. Keep it up.

I forgot to ask after the Infineon race, did you get to see Bob Greer.

Best regards,

bundyrum.
 
Bob stopped by our pits at the WCC and we spoke for quite a while. I think he like the additions I've made to the car. We both have the same spirit for vintage racing by keeping the Big Healey "street legal"...............Bring your ear plugs.

Dougie
 
Looks like great fun,sure were alot of cars, your car sounded sweet. Hard to open her up with all that traffic, is that typical? Genos2
 
Genos2 said:
Looks like great fun,sure were alot of cars, your car sounded sweet. Hard to open her up with all that traffic, is that typical? Genos2
Click to expand...

Geno things usually open up after the first 3-4 laps and then you hope someone is close enough with you to dice with.

Dougie
 
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