hey Guys have been reading the forum so far and ill report what i have found with racing my Hyper 7 ( woo Hoo ! ) and a Stock Go tech 5 port
I had a race day last Sunday at LRRCC came 4 th in the A main and besides being really pleased with the day and running of the event i remembered why i love Off Road so much ! I had so much fun, Liverpool has changed a lot over the years with a much friendlier general atmosphere.
Anyhoo Back to the Go Tech
I found the Standard shimming to be to high comp ratio, i blew a few plugs on run in and when i exammined them realised that more shimms were needed, i also put the Turbo button on and it helps considerably. So in total i ran .7 shimms total and turbo head button.
RUN IN
These engines are tight and yes they make a tinny noise on the first start , thats cos they are so tight, so its imperative to pre heat , i ran in on a all castor mix with 20% nitro no synthetic.. This helps with max protection and promotes heat in the motor, First run in should be real hot if you can .
OK So i got it started with alfoil and a sock over the head, ran half a tank at clean HSN setting ( not overly rich) At half throttle constant, then the other half revving up and down . Then i took it out to the test facility MMSTFATAP
On Grass for 1 litre consistant. I basically punished the engine, i leaned it to almost race tune, close to 10 mins to a tank, then caned it on grass and helis on the dirt. I was trying to force the engine to malfunction or blow, needless to say it didnt happen, in fact it just smiled at me and said GIMME MORE !
I dont recommend you do this at home, as the distributor for OZ i have to KNOW the engines limits.
Anyway i used a 13 T CB and a 46 Spur which gave me a really nice and useable power band. I coud line up at the triple on the front straight at Livo about 1.5 to 2 meters from the jump , gun it , and it would over shoot the jump no problem. back straight , same again , line her up and whoosh, it would clear the back double no probls then scream down the back straight, 2/3 down it the engine was still pulling faster.. Great top end , better than what i expected.
Ok Extra shims will lower your torque down low but help top end. The engine had all the torque i needed and some with .7 shimming in there.
The motor ran flawlessly all day long and starting was so easy , one tap on the box and it fired immediately first go every time !
I ran 7 k center diff , front and rear i didnt bother with , i will be going 5 k front i think to give me a little more pull and on power steering. I ran on Proline bad lands for a stir and i actually liked them lol
LRP Turbo # 6 and of course HB 444 .. The engine feels great , ill be keeping you all posted as to what happens to this test engine. I will be happy if i can get 30 litres through it without any maintenance other than cleaning the top of the piston and head button.
Cheers MM