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Author Topic: bad piston compression IvanFive0 built for twisties Member # 5574 posted                              so i did a compression test on my 5.0 and four pistons came back with low compression..the car is supercharged. i think rod's and pistons are forged but not sure. do i need to rebuilt the motor??? -------------------- 2012 Coyote - Daily 91 Coupe - HCI turbo 88 Mclaren - Griggs, T56, S trim, B50 87 Coupe Posts: 883 | From: At the apex, passing you! | Registered: Apr 2005  |  : E's 89COUPE ¯ Member # 6569 posted                              I BET YOUR HEAD GASKET ARE GONE CHECK IF THERE'S ANY WATER LEAKING INTO THE CYLINDERS -------------------- SIDE JOBS PERFORMANCE & GENERAL MECHANIC 510-875-0502 EDDIE 2005 F150 89.LX COUPE 68.Cougar 89 civic HB Posts: 1432 | From: BAY AREA | Registered: Feb 2006  |  : IvanFive0 built for twisties Member # 5574 posted                              i checked that already looks good... -------------------- 2012 Coyote - Daily 91 Coupe - HCI turbo 88 Mclaren - Griggs, T56, S trim, B50 87 Coupe Posts: 883 | From: At the apex, passing you! | Registered: Apr 2005  |  : TOPnotch ¯ Member # 1340 posted                              5.0 + supercharger most likely a bad tune or no tune at all. Yeah sounds like a head gasket problem. Need more info on the car to help you out. Does the car run rough, is it down on power, run hot, use water? -------------------- The bitterness of poor quality remains long after the sweetness of low price is forgoten!!! 1QWKCHP 1QWKDRP Posts: 2255 | From: Hayward | Registered: May 2002  |  : IvanFive0 built for twisties Member # 5574 posted                              yeah the car run's like shit. their is no power.. think it might need a tune but i don't think that is going to help the low compression.... -------------------- 2012 Coyote - Daily 91 Coupe - HCI turbo 88 Mclaren - Griggs, T56, S trim, B50 87 Coupe Posts: 883 | From: At the apex, passing you! | Registered: Apr 2005  |  : smashin 5.0 ¯ Member # 8301 posted                              time for a rebuild Posts: 23 | From: Daly City | Registered: Mar 2008  |  : 91CHP_Coupe ¯ Member # 7686 posted                              check the head gasket first because you said its only four on one side.... -------------------- 69 Mach 1 91 Coupe HCI. SOLD 04 DSG Mach 1 Posts: 253 | From: Richmond | Registered: May 2007  |  :

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