Has anyone tried these spacers? I have a h23a1 prelude and contemplating whether i want one or not. I will be adding a turbo setup that has me wondering of this is a good combo?

 

Are you talking about the thermal gaskets that go between the manifold and cylinder head?

 

u wot m8?

 

No I am speaking of the spacer that goes between the lower manifold and the upper part of the manifold that says pgmfi on it. The manifold unbolts into two pieces, the spacer goes between the two pieces.

 

I know what you're talking about. just don't know what they are called or what you'd gain/lose.

 

I see they are sold regularly but I don't know anyone personally that has used one....it concerns me that they would be great on a n/a setup but on a boosted setup might defeat the purpose. I have no idea I'm just using my own judgement here, so anyone ever use one on any application? Input greatly appreciated!

 

Plenum spacer?

 

Thats it! Ever use one on any applications or have any recemendations?

 

It was one of the best mods I did on my g35 due to stock design starving the two furthest cylinders. As far as a honda, I have no experience first hand.

 

Curious, Was the g35 a boosted app?

 

No it was NA. Never got that far, traded it in for a suv. I used a 3/8" spacer and it improved the low end powerband. The larger 1/2" that was available improved the powerband in higher rpms.

 

In seen they sell them in 1 inch size for my app and seen a few guys stack 2 of them for more length. No one really say anything about the results. Thanks for the input on this subject.

 

put your money elsewhere

 

Yeap i think i will. My runners are already nice and long and supply plenty of volime
I think any gains would be so minimal.