Hpi .25
#1
Senior Member
Thread Starter
Join Date: Aug 2009
Location: Orlando, FL
Posts: 147
Likes: 0
Received 0 Likes
on
0 Posts
Hpi .25
I recently bought a hpi .25 of eBay I put it in my car today and when I rolled it over by hand it made a click at tdc and was hard to roll past it almost as if the piston is hitting the head? I started it got it to run for a sec and it cut out just curious before I continue on if there is something wrong
#2
Senior Member
Join Date: Aug 2004
Location: richmond, CA
Posts: 629
Likes: 0
Received 0 Likes
on
0 Posts
The .25 is it pull start type engine or not?
It is normal for a new engine to turn hard due to the tightness of the piston and sleeve
use hair dry dryer to heat up the engine to loosen it up during break in, also see your manual regarding break in
period.
It is normal for a new engine to turn hard due to the tightness of the piston and sleeve
use hair dry dryer to heat up the engine to loosen it up during break in, also see your manual regarding break in
period.
#4
Senior Member
Thread Starter
Join Date: Aug 2009
Location: Orlando, FL
Posts: 147
Likes: 0
Received 0 Likes
on
0 Posts
ok I checked piston to head I have .020 clearance after I added shims I will take the shims back out and run it. Do you have suggestions on how to break in properly I do not have a manual I bought it off ebay
#5
Senior Member
Join Date: Oct 2006
Location: Sonoma,
CA
Posts: 1,289
Likes: 0
Received 0 Likes
on
0 Posts
#6
Senior Member
Thread Starter
Join Date: Aug 2009
Location: Orlando, FL
Posts: 147
Likes: 0
Received 0 Likes
on
0 Posts
I said I added shims when I thought the piston was hitting so I will take them back out and leave the one original shim that was in there check my piston to head clearance and go from there
#7
Senior Member
Join Date: Aug 2004
Location: richmond, CA
Posts: 629
Likes: 0
Received 0 Likes
on
0 Posts
Do you have suggestions on how to break in properly I do not have a manual I bought it off ebay
Run it reach for @ least a gal or two, lot of smoke. If it's hard to turn use hair dryer to heat up the engine to loosen it up,
you might need to keep your glow igniter in to keep the engine running. Others may give you suggestion of how to do it.
Run it reach for @ least a gal or two, lot of smoke. If it's hard to turn use hair dryer to heat up the engine to loosen it up,
you might need to keep your glow igniter in to keep the engine running. Others may give you suggestion of how to do it.