57dood
Contributor
Posts: 219
Loc: Ontario
Reg: 08-11-05
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07-30-12 10:53 PM - Post#2254057
Can someone verify.Homemade tester with regulator, guage,and quik connect hose to cylinder.
90 psi into cylinder TDC, compression stroke.car in gear emerg brake on.
5-10 % leak ,good motor.
30% plus ,major issues.
Air leak at tailpipe,bad exhaust valve.
Air from carb,leaky intake valve.
Air from pcv ,bad rings/cylinder.
| Gitter Done,Cant drive 55 |
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 62chevy427
"7th Year" Silver Supporting Member
Posts: 1499
Loc: laurens sc
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07-31-12 07:22 AM - Post#2254120
In response to 57dood
looks good to me.
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57dood
Contributor
Posts: 219
Loc: Ontario
Reg: 08-11-05
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07-31-12 11:59 AM - Post#2254200
In response to 62chevy427
hmmmm
we pulled plugs from the stinky 350.it has a low mileage bottom end and all rebuilt cast,202 stainless valves,vitons,etc.ran about 200 miles.
2 plugs pulled so far are caked with heavy gunk.we put 90 psi in at tdc.air drops gradually to 10 psi.u can only hear air escaping inside base of intake but not thru carb?
any ideas.
| Gitter Done,Cant drive 55 |
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 Rick_L
Honored Member
Posts: 24738
Loc: Katy, Tx, USA
Reg: 07-06-00
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07-31-12 02:26 PM - Post#2254231
In response to 57dood
Rings.
Leakdown tester numerical results will vary with details of the design.
I assume that you put an orifice between the regulator and the gauge?
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57dood
Contributor
Posts: 219
Loc: Ontario
Reg: 08-11-05
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07-31-12 03:40 PM - Post#2254258
In response to Rick_L
too inacurate ,looking at a store bought tester before proceeding.
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drtyler (4)
