Jump to content

Recommended Posts

Using a home tester mine all registered between 185 and 195 psi. This was immediately after a head job so figs are back to their original values. Before head job they were down at 150 ish and one was at 70 and one didn't register, hence how I knew it needed attention! In my case the low reading was due to minor head corrosion causing a bad seal with the head gasket. A 4 thou skim and new gasket soon solved that. Also recut the valve seats and reground the valves. Generally I think an engine will run fine with 10 to 20% drop in compression on one cylinder, probably less noticeable on a 6 cylinder rather than a 4 cylinder in terms of smoothness. Poor valve seating will also cause low compression, but this is still a head off job to correct.

Link to post
Share on other sites
  • 3 weeks later...

cheers mate.. yeah c&r helped me out when i broke a 10mm bolt that was screwed into my mums 2.0 audi head. The coolent was leaking from the unit that comes off it (forgotten what this is called).. They rebored the hole, fitted a sleeve so i could put a bolt in. They were expensive though

Link to post
Share on other sites
×
×
  • Create New...