This subject hasn't been touched in a while and most of us are still not sure, if the gains are proven, if there are any. The last thread I saw was from mid 2010 (go figure).

Is the single pass IM worth it? Can we get a legit discussion going about this? Maybe from people who have it installed also.

 

Right on ZZP's website:

"Shown below is a dyno we did testing our single pass against a dual pass system. Car has stock engine and head but is otherwise fully modified. We gained 6WHP, neither the car, nor the tune was changed for this comparison but we expect further gains with added timing, leaning the car out, or a smaller pullley"

From any reading i've done it definitely works.

 

its not for powa but for sustained cooling.

 

Before you invest in this pm alexxx and ask him about his ZZP single pass intake manifold

 

Same, but I'd like real world testing - On a street car.

I know.

There's no one on here with that name.

 

word on the street is that alex's didnt work as stated.

 

Ah, that's lame. That's what I mean. I want real world "here-say" before I go and blow $400 on one. That's a lot of money.

 

mine works takes a little longer for the iat2s to climb and recovery is even faster then a dualpass

 

You have the ZZP version?

 

sure do just donr hook it up backwards

 

As far as I was told they install the laminovas before they send it back! It should be ready to roar right out of the box!

 

they do i was talking about the lines

 

Oh oh! Honestly, I've never even seen a diagram on how to hook it up. :X

I don't even know if there are any.

 

Alex's IAt2s were higher then a stock setup with the ZZP single pass. I can't attest to how it was installed as I never saw it, just talked to him about the temperatures.

Went back to a GM Dual pass with option B, and temperatures were much better.

Kevin

 

Alexx got a zzp single pass it came without cores. we assembled it and put it on the car. alexx monitored iat1/2. they did not compare to Distillion's car with the same equipment (sc, griffin etc) but Distillion had a dual pass. So Alexx paid to have a dual pass put back on (what he had originally) and the iat1/2 matched Distillion. That is to say better.

ZZP single pass is a single port system. My single pass is a 4 port system. it works better than the rest, but I no longer make them for sale.

Truth be told, once you got a racing Griffin h/e (which is a dual pass heat exchanger in the stock location) and either dual or OEM 4 pass with option B, you are good to go.

 

Well that arises more questions from me if you'd care to answer them.

Maybe the laminovas were installed wrong? I can't possibly see how a dual pass would give lower IAT's over a single pass. Especially singe other than the end-plate, they had the same cooling mods. I don't get it.

How does option b help, isn't it just a bleeder system? There are other companies (Vulcan) who make a "thru-tank" which is a constant flowing system and it also has a bleeder. Wouldn't this be better than the traditional "option b"?

 

johns not the guy to ask if they were installed wrong

 

My son Devon installed the laminovas. they were not installed wrong. our shop was the first to do plumbing for GM on revised systems, and its a matter of record that we discovered the reversed wiring issue with Redlines for GM.

the single ports of the zzp part imho creates a restriction. ZZP answered a request at a price, and came up with a single port single pass; 4 ports are very difficult to make, install and plumb and cost a lot of money

option B helps as a reservoir and bleeder. there is no data to support a flow through tank as being superior to GM engineered option B. Hatrick Stu said it worked great. but thats just what Stu said. No idea how good.

even Alexx' single pass zzp versus dual pass experience is only one example. Mr Belvedere is happy with his.

 

Sweet! Thanks for the information, and taking time to bother with my questions. I appreciate it.

I have seen your design, 2 in & 2 out, (and it looks very nice, definitely). From what I have read, I believe even the ZZP single pass, (as that's all that is out there now), is far superior to stock, and probably still a bit better than dual pass. Given the plumbing is routed properly.

I would think a real "flow through tank" would help quite a bit with IAT's, but that's just on paper.

I think it would be easy to plumb the ZZP single pass using the stock filler neck, which I will be using. I do not need option b. I've never had any problem bleeding my system quickly. If I get it (option b), it'll be down the road some time.

 

well i guess im set...lol!