full mod engine, what carb & tuned pipe

[Draggline53]

Fellas I'm to install a OBR 7.5hp full mod zenoah 30.5cc 4-bolt ehgine. What kind of performance should I expect as oppose to a regular pro stock zenaoh 4-bolt engine? Also what walbro carb should I install 990 or 813 and why? Last but not least what tuned pipe should I get jetpro or cpi? You guys have been great and informative hope to hear your expert advice and suggestions. happy new year to everyone out there.

 

[Draggline53]

OOPS! that engine will be placed in a new mcd competition v4 monster truck

 

[CALIC]

Hi, i bought this same engine couple of months back but still haven't tested it as my fg beetle still under construction, i did some research on exhaust but there isnt many information so i contacted obr and they recommanded the vrc pipe as its built to suit the engine. But as they didnt have them in stock at that time, i had to settle with a ddm dom pipe which allot of people had sed good things about them. Sorry not much info there but i hope u find it useful.

 

[wagon]

Hi mate I run the same engine in my mcd ultimate... I
Run a rn tuning pipe witch is now vrc.. I do use a 603 carb just for ease
Of starting....chech my album if U need a look.......

 

[mooman007uk]

running one in my hillclimber, with an 813 on this one, these motors scream...you can see the difference in between an old obr 30.5 2 bolt race ported and the 4 bolt 30.5 full mod in the 2 vids..2 bolt struggles to get on the pipe, the 4 bolt hit's it real quick and stays on it...motor has no more than 10minutes on it...once it's loosened up it rev more
[ame="http://www.youtube.com/watch?v=Yrw0Vu1ECNw&list=UULIst2yeyC2aS8BjqO0Yxhg&index=2"]http://www.youtube.com/watch?v=Yrw0Vu1ECNw&list=UULIst2yeyC2aS8BjqO0Yxhg&index=2[/ame]

[ame="http://www.youtube.com/watch?v=l694zJLnEPA&list=UULIst2yeyC2aS8BjqO0Yxhg&index=1"]http://www.youtube.com/watch?v=l694zJLnEPA&list=UULIst2yeyC2aS8BjqO0Yxhg&index=1[/ame]

 

[atom3624]

You must go through some clutches, and driveshafts!!

Al.

 

[Draggline53]

Thanks it's a start let me know how the beetle turns out. sen vids if can.

 

[Draggline53]

where did you purcahse your vrc pipe?

 

[CALIC]

You can buy the vrc pipe at http://www.pitstop-shop.nl/ thats the only place that i know which sells them atm apart from onb which they still out of stock.

I will upload some vids as soon as my monster is ready

 

[dwarfy]

My stevo engine will be running a 990 carb and FG tuned pipe in my Beetle.

 

[mooman007uk]

You must go through some clutches, and driveshafts!!

Al.

believe it or not it hasn't busted a pin, cup or clutch since i built it...most reliable rc i own did strip a centre diff last outing but that was caused by a brake pad adjusting screw backing off and jamming the centre ring gear.
currently on hillclimber build v2, solid axles and 57cc obr twin:w00t: