New Control Line Stunt engine . !
![](https://i.pinimg.com/736x/f6/29/e5/f629e518b46b1404d46d3265ee1ba942--engine-swap-interesting-engineering.jpg)
Cleanliness is Next to Godliness .
![Stir the pot S?P](https://stunthanger.com/smf/Smileys/classic/stirpot.gif)
Wash in Solvent or Alcohol , Ensure NO GRIT remains. A clean paper towel should show NO Contamination , after duress on component/s
Triumph ( Even Though its NOT a Pre Unit , which were more carefully built than most unit construction triumph / BSA's
( Nortons were later built in the olde J.A.P. Factory .Often by careless youths . . . .
![](http://3.bp.blogspot.com/-LiD8QckaxoI/TlwQcfU4sjI/AAAAAAAAAFI/qaTwZJRYmuQ/s1600/006bw.JPG)
Drilled / Lightened , narrowed , polished Timing Gear set . The Case itself would perhaps be polished INTERNALLY for better oil flow down / less drag .
And yr garden variety
![Undecided :-\](https://stunthanger.com/smf/Smileys/classic/undecided.gif)
or maybe not so garden variety , Cad. & other High Po were more ' Quality Control ' Oriented ,
350 Chev. .
![](http://www.grumpysperformance.com/crankcon4.jpg)
Again objective is better drain down ( if de burred case ) Less Drag . Lower Stress raisers/ raising . MORE Horsepower .
Better Reliability .
Rather than modifying , ' improvements ' and greater attention to deatail . At that era of engineering .
Not Everyone had the pockets for a 1.000 Hr hand built ' production ' engine .
While deburring / cleaning & polishing likely wont harm a Aerobatic Engine , its more the provinance of Race / Hi-Po options.
THOUGH here the pre requiste was the elimination of debri & contamination of second hand used C-L powerplants .
At Your Own Risk . Common Sense & some degree of engineering Knowledge and Princaples is assumed / required .
So Study or Practise on junk. Some have a natural affinity / touch . Less is usually More , in ' altering ' anything .
unless a master of the art .
So we Dont Dissagee with the ' Brett Buck Tune ' ; but started from Ex R.C. junkers - so used what we can get , here with the FP/LAs ,
The Boxed FP Remaing is the RC with the ' Correct ' muffler , and the LAs are the ' Correct ' Venturies Now ..
Ive put this stuff on , as second hand FPs / LAs unless correctly cared for are liable to corrosive deterioration ,
Which unless corrected is leading to their premature demise .
![Hoff H^^](https://stunthanger.com/smf/Smileys/classic/hatsoff.gif)