1strdko

I have a JG pro series bored and close decked 2.0 ls short block. I have had serious heat issues ( although I live in hot as hell Tucson ). I have never had a problem before until I went to the LsVtec conversion. I also have a JRSC.

The problem is I am loosing coolant, and I am constantly replacing it. I have replaced the radiator, checked all the hoses, replaced the radiator cap, am currently running the fan all the time, and changed the thermostat.

Does this deck block have heating problems. The only thing I have not replaced is the water pump because it is a little expensive. Please HELP!?

civbeater90

how do your relief holes look?make sure your filling your coolant properely.no air in the system

1strdko

I looked at it when I got it months ago and it was identical to every other block Javier built. I have had to change the coolant many time so dont think their is an air pocket, but just for insurance, how do I get rid of air pockets?

paulzy

iTrader: (1)

have you looked into teh headgasket being a problem?

tegasaurus

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Paul_Vang &raquo;</TD></TR><TR><TD CLASS="quote">have you looked into teh headgasket being a problem?</TD></TR></TABLE>

that was my first assumption. You said there were no heat issues until the ls/vtec which would entail you taking the head off... did you check the headgasket then?

good luck with figuring out the problem

-ryan

1strdko

I replaced the head gasket with a supplied unit from JG.

Im going to do a leak down test next week.

Turbo92Si

had same problem with my JG pro series block and it was a sunk sleeve.........good luck bro.

oscarmayer

that is a common issue on daily driven car sand closed deck designs. even if ti's a block guard or a sleeved unit, honda motors were enver ment to be closed deck. they don't flow coolant peoperly and the top 1" or so if the chamber where it gets the hottest and that's where the least cooling gets top when you clsoe it off. so by nature your going to have issues if you clsoe it off. The only thing you might be able to do is get with the guys you got your block from and make them deal with it. after all you payed for a motor to run a certain way, and if it will ont no mater what you do, they need to fix it.

final note on the issue, how is your tunning? improper tunning meanign runnign way to lean can cause the same issue. have it checked. t is recommend you have your car retunned and checked every 3 months or so. if it isa perforance fi car like a turbo honda or something.

1strdko

The car also idles very low due to a light Fidanza flywheel. Will this make throw the water pump off since it is timing belt driven?

1strdko

Anybody have the same problem with a close deck application, if so, how was it corrected?

Boost2NA

If you are losing coolant I would say headgasket or like someone was saying sunk sleeve. Pull off your oil cap and look for any milky residue on the inside of the cap. If there is a residue then you are getting coolant in with your oil.