This is how I did it, Dyno video at the end.
Set up by:
Dynoit.co.uk (HT racing)
These three unknowingly helped with research:
Superb Mandrel bends off ebay from ebay seller:
IHC Engine How To Build a Muffler and Camera Tripod
How to build a pipe muffler for a gas engine,using a grizzly milling machine,sounds very good on a one cylinder flywheel motor,use an old end mill cutter for ruff work, build a flexible camera tripod to free up your hands when using the mill or lathe,no blueprint needed, leave a comment, subscribe, pass it on,,
How to port and polish high performance v8 heads,tips,tricks and trade secrets exposed
*******CHECK OUT PART 2 ***** http://www.youtube.com/watch?v=sZDlZxqRVJw
COMBUSTION CHAMBERS http://www.youtube.com/watch?v=D63jgJs95gY
DEGREE CAMSHAFTS http://www.youtube.com/watch?v=azLX1pi2oVE
I look at porting and polishing high performance heads,I been building engines for 30 years, most of that time in research and development,I explain in real simple terms air flows and velocities,these 308ci General Motors Holden heads have been transformed over 70 hours,I show you all the do's and dont's,keep a lookout for the rest of the rebuild vids, as we head into final assembly,especially dialing in camshaft's,compression ratio's and everything else that makes internal combustion engines cranky,Aussie Heads and Race Engines-One Man One Shop
NRE University: Cylinder Head Secrets, Part 2 of 2.
Join Tom Nelson as he visits West Coast Cylinder Heads to film typical NRE cylinder head modification. Good stuff for gearheads. Hundreds of videos at http://nelsonracingengines.com. This is part 2 of 2 parts.
Tuning BL's A series Engine - A talk by David Vizard - Part 1
A talk held by GPD automotive in the early 90's when David Vizard was in Australia.
He covers quite a number of topics. This clip includes :
Filtration - how a K&N filters
This video remains the property of GPD automotive (with whom I am not affiliated)
Changing over from stock manifolds to Stainless Steel manifolds.
I was in the middle of a repower of an I/O Mercruiser when someone came in and wanted to trade this set of manifolds for a stock set! Done deal, he walked out with a black cast set and left these, happy day for both of us. Since then I have found out what he probably knew all along. POOF- no longer would I have power steering since there was now something in the way where the pump would mount- No biggie as I convinced myself I really did not need power steering. So what happened to where I mounted the shifter junction? 1/2 day later had a custom bracket. Move my wiring harness bracket-I can do that, how about the Mercathode and circuit breaker-they will have to also move, too many hoses to manifold- custom block off plate- oops- hoses to go from thermostat housing to Exhaust figure how to build and route new ones, what about that water separator that used to go right there- well, the spot it used to be is no longer vacant, move it somewhere else-different fuel lines- OH NO- oil dip stick- same story- how about those studs to hole it on to the block?? Well that a no go- pull them out and re-tap for header bolts- What next?? inner shift cable, linkage, Exhaust system in boat- all for what- to put on manifolds that probably no one will ever see buried in the motor compartment. If anyone else has ever done this, please tell me these manifolds really will make a difference in hp.
Why all the dislikes?? Just letting you know the issues with this Exhaust. In any case it was probably worth it. Check out the video response for the end result.
Performance Exhaust Systems: Car Restoration Tips : How to Make Compound Bends in Mufflers
Make a compound bend in a muffler to fit the pipe in tight places by making two tight bends together; learn how to make a compound muffler bend in this free auto-repair video.
Expert: Doug Jenkins
Bio: Doug, of Doug Jenkins Custom Hot Rods, not only servers the entire nation, but even customers outside the U.S have found the shop's services indispensable.
Filmmaker: Ross Safronoff