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The Terminator
Engine/Tuning
Most you made on a 3.4 WHIPPLE?
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<blockquote data-quote="MalcolmV8" data-source="post: 15072565" data-attributes="member: 8854"><p>What downsides have you heard? I know they have a horrible rod to stroke ratio which puts a lot of side load on the pistons and they don't last as long in street engines with a lot of miles. I've also heard they don't rev as freely or quickly due to the longer stroke which makes sense. Other than that I hear lots of torque and power.</p><p></p><p></p><p>Probably because that's a very hard thing to do. It would require a specific set of conditions and engine configuration. Remember boost or PSI is just a measure of restriction to air flow. So if the 3.4 made 20 PSI on one car pulley'd identical on another car it may make 25 PSI because that motor doesn't flow as well and more air is backed up. That second motor would likely make less HP. See the problem there?</p><p></p><p>A better measurement would be what HP level does the blower support before boost or airflow starts to taper off in the upper RPMs because the blower can't keep up.</p><p></p><p></p><p></p><p>Bummer on the spark plug threads falling into the cylinder. Was it a heli-coil of sorts that came loose or how did that happen?</p><p></p><p>Be cautious of Diamond pistons lately. You may have seen my fiasco with them recently this year. Took over 3 months to get pistons to me and then after assembling the motor found I didn't have piston to valve clearance required. Tore motor back down to discover they cut the valve reliefs in the wrong place and the intake valves were completely missing the reliefs. Had to strip bare and ship them back the pistons for replacement. They initially admitted fault then got nasty and tried to make me buy another set of pistons saying I ordered them wrong. I didn't though, had to argue and fight them for weeks. Finally got my replacement pistons but will NEVER do business with them again.</p></blockquote><p></p>
[QUOTE="MalcolmV8, post: 15072565, member: 8854"] What downsides have you heard? I know they have a horrible rod to stroke ratio which puts a lot of side load on the pistons and they don't last as long in street engines with a lot of miles. I've also heard they don't rev as freely or quickly due to the longer stroke which makes sense. Other than that I hear lots of torque and power. Probably because that's a very hard thing to do. It would require a specific set of conditions and engine configuration. Remember boost or PSI is just a measure of restriction to air flow. So if the 3.4 made 20 PSI on one car pulley'd identical on another car it may make 25 PSI because that motor doesn't flow as well and more air is backed up. That second motor would likely make less HP. See the problem there? A better measurement would be what HP level does the blower support before boost or airflow starts to taper off in the upper RPMs because the blower can't keep up. Bummer on the spark plug threads falling into the cylinder. Was it a heli-coil of sorts that came loose or how did that happen? Be cautious of Diamond pistons lately. You may have seen my fiasco with them recently this year. Took over 3 months to get pistons to me and then after assembling the motor found I didn't have piston to valve clearance required. Tore motor back down to discover they cut the valve reliefs in the wrong place and the intake valves were completely missing the reliefs. Had to strip bare and ship them back the pistons for replacement. They initially admitted fault then got nasty and tried to make me buy another set of pistons saying I ordered them wrong. I didn't though, had to argue and fight them for weeks. Finally got my replacement pistons but will NEVER do business with them again. [/QUOTE]
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Most you made on a 3.4 WHIPPLE?
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