ported 2g mani or ported 1g?

[highboostintsi]

Is there a differnt if i port my 1g mani or buy a 2g mani and get it ported? i heard the only difference is that the 2g mani has a higher nickle content therefore its not going to crack as easy? is there any other advantages or disadvantages to either?

 

[beating4g63s]

just get a 2g ported, if you also check the pricing on those you can find a 1g for anywhere like 10+ bucks got mines for 5 cause I needed one fast and 2gs go for 100+ depending on how sweet a deal you can find so theres a reason for that. 2gs don't crack and can last a lot longer. it's money well worth it to me. but besides the cracking iss there just about the same.

 

[4G63Boosted]

The 2G manifold also has larger runners and collector area. Meaning better exhaust flow, and faster spool up.

 

[xveganxcowboyx]

If you have the ability/inclination to port, I say port the stocker. It's really no cost but time. If it cracks, buy a 2G.

I think either will flow fine considering your lacks of mods and should support more comfortably.

 

[carl5463729]

2g manifolds will crack, the one i bought from some guy for $50 had a crack on the top of the collector area. but someone owed my uncle a favor and he got it welded up real nice. i also proted it out.

 

[dsm-onster]

The 2G manifold also has larger runners and collector area. Meaning better exhaust flow, and faster spool up.

No, larger exhaust manifold runners lead to slower spool and higher power at higher revs. Neither is very noticeable between the manifolds discussed and only a minimal increase has been noted with a "performance" exhaust mani unless rediculous horsepower numbers are being run. Get a 2G mani for the fact that it is less crack prone. or don't bother with the upgrade and get a "$5" 1G.

 

[Steve_P]

I believe the 2G exh manif is cast steel and the 1G is cast iron. Either way the 2G is a much better alloy and will last MUCH longer w/o cracking- and also look much nicer.