If 29cc domes = 190/195lbs then what size = 180lbs?

[Prem1x]

What size domes do I need to safely run 93 octane fuel at 180 lbs?

I'm using a Advent CDI (180lb b-pipe freestyle curve). Currently I'm seeing 6560 max RPM's with an old Pro-tec b-body pipe and an MRD injection.

 

[Mark44]

Depends on the porting and amount of squish in the cylinder but typically it would need a 33cc dome to get 180 PSI.

Correct me if I am wrong.

Thanks,
Mark

 

[beachedflunkey]

With a Magoo port, I'm getting 175 on 33's.

 

[Frosty]

With a Magoo port, I'm getting 175 on 33's.

Same here. I assume ya'll are talkin 701cc and not 760cc?

 

[Mark44]

s

With a Magoo port, I'm getting 175 on 33's.

I am getting 165 on magoo port, but my squish is also .070. This is why I am looking for 29cc domes.

Mark44

 

[Prem1x]

Yes, a 62T 701. I haven't measured the squish. I guess I should do that.

So, I guess I have a set of 36cc RIVA domes that I will probably never use. The 29cc is off a RIVA girdled head that is not domed, so I have a domed head to replace it.

 

[Mark44]

Yes, a 62T 701. I haven't measured the squish. I guess I should do that.

So, I guess I have a set of 36cc RIVA domes that I will probably never use. The 29cc is off a RIVA girdled head that is not domed, so I have a domed head to replace it.

Mine is also a 62T 701.

 

[Mark44]

d

I have also discussed the squish with Paul and I should be running .050. I am going to take the cylinder off and cut it down .020. Should get my comp. up where I need it and provide the proper squish.

Mark44