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by SchmidtMotorWorks
Tue Jul 07, 2020 10:24 pm
Forum: Engine Tech
Topic: 2 stroke for drag racing cars?
Replies: 46
Views: 8083

Re: Re:

RZ500. My dad had a first gen Suzuki RG400 Gamma. Berzerker machine. So peaky it took more skill than I had to be quick on it. My dad road-raced extensively in the late fifties-early sixties he had the skill to keep it "on the pipe" he could FLY on that thing. I remember chasing him on a twisty roa...
by SchmidtMotorWorks
Tue Jul 07, 2020 8:54 pm
Forum: Engine Tech
Topic: 2 stroke for drag racing cars?
Replies: 46
Views: 8083

Re: 2 stroke for drag racing cars?

Yes and with the new etec technology im not sure why no one has. In the snowmobile world the etecs get as good or better fuel economy than 4 stroke equivalent. My nephew put a 583 rotax twin just over 100 hp in polaris quad. Suicide machine it was. I wonder what a scaled up RD400 with the big Rotax...
by SchmidtMotorWorks
Tue Jul 07, 2020 6:43 pm
Forum: Engine Tech
Topic: Mr Fueling.
Replies: 25
Views: 980

Re: Mr Fueling.

I have seen a lot of them in wrecking yards, the intake looks like a header.
by SchmidtMotorWorks
Tue Jul 07, 2020 6:41 pm
Forum: Engine Tech
Topic: 2 stroke for drag racing cars?
Replies: 46
Views: 8083

Re: 2 stroke for drag racing cars?

Steve.k wrote:
Tue Jul 07, 2020 6:29 pm
The newer rotax twin 850 cc etec are almost 52 cubic inch. 165hp. Thats 3.17 hp/cube.
That would be an interesting engine to put in a modern bike.
by SchmidtMotorWorks
Tue Jul 07, 2020 6:40 pm
Forum: Engine Tech
Topic: 2 stroke for drag racing cars?
Replies: 46
Views: 8083

Re: Re:

RZ500. My dad had a first gen Suzuki RG400 Gamma. Berzerker machine. So peaky it took more skill than I had to be quick on it. My dad road-raced extensively in the late fifties-early sixties he had the skill to keep it "on the pipe" he could FLY on that thing. I remember chasing him on a twisty roa...
by SchmidtMotorWorks
Mon Jul 06, 2020 7:09 pm
Forum: Engine Tech
Topic: Mr Fueling.
Replies: 25
Views: 980

Re: Mr Fueling.

pdq67 wrote:
Mon Jul 06, 2020 1:55 pm
Imho, "His figure-8 chambered BBC work truck torque head", is technically advanced.

And not trying to stir the pot here.

pdq67
I can't think of any modern engines that adopted the super closed chamber or valve actuation.
by SchmidtMotorWorks
Tue Jun 30, 2020 11:09 pm
Forum: Engine Tech
Topic: SAM's SB2 At The EMC And The REC
Replies: 48
Views: 2012

Re: SAM's SB2 At The EMC And The REC

Compared to a single sb2 intake. Will find out more details when done.......but designer said looking to make 1100hp What RPM target? Vs something like this? https://cimg5.ibsrv.net/gimg/racingjunkgallery.internetbrands.com-gallery_site/600x434_85-1/php7yxhhv_4a8060a88b25c88e0a1ef073a638c38ace47ad9...
by SchmidtMotorWorks
Tue Jun 30, 2020 9:45 pm
Forum: Engine Tech
Topic: SAM's SB2 At The EMC And The REC
Replies: 48
Views: 2012

Re: SAM's SB2 At The EMC And The REC

I may be mistaken but are you comparing the time spent to optimize all aspects of a single engine vs the time it takes to test a 1.5 rocker ratio vs a 1.6 rocker? I'm curious, how much time would you budget for that test? (including record keeping and update of test plan, clean-up the cell etc.) Ch...
by SchmidtMotorWorks
Tue Jun 30, 2020 9:18 pm
Forum: Engine Tech
Topic: SAM's SB2 At The EMC And The REC
Replies: 48
Views: 2012

Re: SAM's SB2 At The EMC And The REC

I may be mistaken but are you comparing the time spent to optimize all aspects of a single engine vs the time it takes to test a 1.5 rocker ratio vs a 1.6 rocker? I'm curious, how much time would you budget for that test? (including record keeping and update of test plan, clean-up the cell etc.) Ch...
by SchmidtMotorWorks
Tue Jun 30, 2020 8:48 pm
Forum: Engine Tech
Topic: SAM's SB2 At The EMC And The REC
Replies: 48
Views: 2012

Re: SAM's SB2 At The EMC And The REC

Wonder how much more will this intake add...........back on track!! https://scontent.fmel4-1.fna.fbcdn.net/v/t1.0-9/102786137_2798993233535420_2658233871786891593_n.jpg?_nc_cat=107&_nc_sid=110474&_nc_ohc=kvbtRt-11nkAX-eIveZ&_nc_ht=scontent.fmel4-1.fna&oh=2dd66be0767043ebbe42108e203d520e&oe=5F23344D...
by SchmidtMotorWorks
Wed Jun 24, 2020 7:32 pm
Forum: Engine Tech
Topic: 60 DEG TIMING TO GET ENGINE TO START
Replies: 27
Views: 978

Re: 60 DEG TIMING TO GET ENGINE TO START

Firing order wrong direction on cap?
by SchmidtMotorWorks
Mon Jun 22, 2020 5:27 pm
Forum: Engine Tech
Topic: Edelbrock E force heads #5089
Replies: 16
Views: 589

Re: Edelbrock E force heads #5089

It wasn't my project but I remember it being discussed in some meetings.
If I remember correctly, the issue was that the hydraulic rollers were bleeding out at high rpm and the valves were closing while the cam was still on a high velocity portion of the lobe.
by SchmidtMotorWorks
Fri Jun 19, 2020 12:41 am
Forum: Engine Tech
Topic: Pass-on 4 valve engine project
Replies: 28
Views: 1890

Re: Pass-on 4 valve engine project

tjs44 wrote:
Thu Jun 18, 2020 11:12 pm
Going to miss you Jon!Need to find another guy with a CNC in his back yard for small jobs!Good luck.Tom
Thanks, Tom.
I enjoyed making your Ram Air 5 stuff.
by SchmidtMotorWorks
Wed Jun 17, 2020 11:29 pm
Forum: Engine Tech
Topic: Applying the DV 128 formula on a Supercharged engine
Replies: 211
Views: 3838

Re: Applying the DV 128 formula on a Supercharged engine

F-BIRD'88 wrote:
Wed Jun 17, 2020 11:02 pm
DV does qualify the engine type and purpose. Very clearly.
False^^^ (The qualifications and fudge factors came later)

by SchmidtMotorWorks
Wed Jun 17, 2020 10:49 pm
Forum: Engine Tech
Topic: Pass-on 4 valve engine project
Replies: 28
Views: 1890

Re: Pass-on 4 valve engine project

This might have gone better in the advertising section, some people get offended when people use the tech forum to sell their self. I gave most of it away to people that would never be able to afford it. I paid $2,500 for machinery moving in one case, then helped with wiring. I hope that isn't too ...