sohc pistons in dohc.
sohc pistons in dohc.
Would it be a good idea to lower the compression using sohc pistons in a dohc before turboing it? Is the stock compression on a dohc ok for a turbo setup running around 8-10 pounds of boost?
98 r/t: 2.0L=3 spun rod bearings. Starting 2.4L build with srt internals.
14.5@98mph 5psi
srt turbo, stock intercooler, stock downpipe, mpx pulley, 2.5" catback, maddog sts.
14.5@98mph 5psi
srt turbo, stock intercooler, stock downpipe, mpx pulley, 2.5" catback, maddog sts.
You can run 8-10psi on a stock DOHC safely with a good tune. A GOOD TUNE. I have also seen some people running 12psi, but you better have the best tune and a stout engine to try that. I'm very comfortable running 8psi. I would run a little more, but my engine is old (140,000 miles) and all stock inside.
Using SOHC pistons with a DOHC head will lower the compression. The lower the compression is, the lower the cylinder pressure will ultimately be. Having a lower cylinder pressure allows you to run a little more boost (which will raise cylinder pressure) and timing advance on the same octane fuel.
Using SOHC pistons with a DOHC head will lower the compression. The lower the compression is, the lower the cylinder pressure will ultimately be. Having a lower cylinder pressure allows you to run a little more boost (which will raise cylinder pressure) and timing advance on the same octane fuel.