Pappy
06-21-2005, 04:48 PM
Ever since the fine folks at Racer Productions made it final that the youth riders would have a home at the GNCC event's, I was wanting to build our TRX90 into something competitive. Being pretty close to the folks at GT Thunder made it really easy to make a decision on who would get the engine.
Laz Sommers, owner and head wrench of GT Thunder is not only a business man, he is a racer first and that usually means you are going to get something that works and not just a bunch of expensive parts and a big bill!
I had decided that I would leave the engine up to Laz and the specs would be at his sole discretion. At the opening round of the GNCC Youth season, he handed me an engine and we promptly installed it the week following the race. The little 90 had been transformed into something that could stay with any other mini quad in the straights , yet had plenty of grunt and mild manners to keep things honest in the woods. Unfortunatley, the engine was 114 cc and even tho several participants have swayed back and forth on the rules, we decided not to run that engine.(RP states that no engines over 90cc)
So, back to square one, another call was made and the engine shipped back to GT Thunder. I explained my situation and we decided to make a 90cc engine that complied with the rules.
The TRX90 engine was treated to a full port job and the head fully inspected and all needed parts were replaced. A new stock cyclinder was then turned into a true 90cc along with a cam to aid in the quest for more power. A slightly higher compression piston would net us more power and the bottom end was deemed in decent shape and left alone. So after no more then 3 weeks, we were ready to try this animal again.
Laz Sommers, owner and head wrench of GT Thunder is not only a business man, he is a racer first and that usually means you are going to get something that works and not just a bunch of expensive parts and a big bill!
I had decided that I would leave the engine up to Laz and the specs would be at his sole discretion. At the opening round of the GNCC Youth season, he handed me an engine and we promptly installed it the week following the race. The little 90 had been transformed into something that could stay with any other mini quad in the straights , yet had plenty of grunt and mild manners to keep things honest in the woods. Unfortunatley, the engine was 114 cc and even tho several participants have swayed back and forth on the rules, we decided not to run that engine.(RP states that no engines over 90cc)
So, back to square one, another call was made and the engine shipped back to GT Thunder. I explained my situation and we decided to make a 90cc engine that complied with the rules.
The TRX90 engine was treated to a full port job and the head fully inspected and all needed parts were replaced. A new stock cyclinder was then turned into a true 90cc along with a cam to aid in the quest for more power. A slightly higher compression piston would net us more power and the bottom end was deemed in decent shape and left alone. So after no more then 3 weeks, we were ready to try this animal again.