Spinner-D(eluxe)

I sent this message to Rob at Pineapple racing, but his mailbox was full, and I wanted to get some feedback from the forum members as well. Here is what I sent Rob. What suggestions do you all have?


Hi Rob,
I have an 84 GSL-SE that recently overheated due to a thermostat that froze closed. After that it developed what I think is an internal coolant leak. After about a minute of running the engine it starts poring out white smoke.

First I need to know if you will accept this 13B 6-port core as a core exchange if I want a 13B 4-port or 12A engine built for my racing purpose.

Secondly I would like to get some advice on what setup to get (Holley/Webber/Street Port/Bridge Port etc...). If you charge for consulting time I could wait until I drive down from Seattle with my core, and we could talk then.

Also what parts should I take off the engine, and what should I leave on when I bring the core down?

Thirdly what is your schedule like (Turn around time)?

Lastly I will list my current setup, and what I use my car for so maybe we can discuss what would be the best engine to build for my purpose.

Current Setup: 13B 6-Port engine, RB Holley 600 Kit, RB Street Port exhaust system (Race Header/duel 2" pipes back to muffler), Holley Blue fuel pump, electric fan, under drive pulleys.

I use my car mostly for auto-x, but would like to do a few drag race events.

Options I have been considering:

1) Keep my Holley 600 and put it on a 13B 4-port with Street Port.
2) Keep my Holley 600 and put it on a 12A with Bridge Port.
3) Switch to a Weber 51 IDA and put it on a 13B 4-port with Bridge Port.

What do you think?

Thanks,

-Derek

Alex-7

That sucks you over heated man, if I remember your recent posts corectley you just got your setup running right.
The four port 13B is definatley the way to go in my opinion if all your going to do is auto X and the occasional trip to the strip. (I think most forms of scca racing require you to use a 12A)
But you might want to consider going with a diferant carb than your Holley, or at least get a race float bowl kit, I have heared that Holleys suffer from fuel starvation in heavy cornering situations.

Good luck,
-- Alex

P.S I have the RB six port Holley kit on my SE aslo.
Did you ever hear back from them on the secondairys situation?

Spinner-D(eluxe)

Yea I just got it running about 2-3 months ago. I called Racing Beat again last week and they said they have gotten a lot of reports/complaints from owners of that kit saying that the secondaries won't open. They said that there must be a difference between the 84-85 6-port engines and the newer ones that they weren’t aware of, and are working on the fix. They told me to call back in 6 weeks, and they would have a fix. Now that my engine needs a rebuild I am considering a different setup.

Oh and for auto-x I just run in Time Only class, because I just do it for fun, and don't want restrictions on what I can do to my car. It would be fun to have a bridge ported 12 a with the weber though. I'm sure with that I could get down into the 12s at the strip. DO you think so?

Alex-7

[QUOTE][i]Originally posted by Spinner-D(eluxe) I'm sure with that I could get down into the 12s at the strip. DO you think so? QUOTE]

I would think so, with some weight reduction, Low 13's deffinatley with a well tuned setup like that(I'm guessing 200-220 whp with a roudy bridge port).
But you already have a 13B so all you need are some 12A front and rear plates to make a four port.

No replacement for displacement as they say,

--Alex

Spinner-D(eluxe)

[QUOTE]Originally posted by Alex-7

Quote:

[i]Originally posted by Spinner-D(eluxe) I'm sure with that I could get down into the 12s at the strip. DO you think so? QUOTE]

I would think so, with some weight reduction, Low 13's deffinatley with a well tuned setup like that(I'm guessing 200-220 whp with a roudy bridge port).
But you already have a 13B so all you need are some 12A front and rear plates to make a four port.

No replacement for displacement as they say,

--Alex

My car is down to 2300lbs with a full tank of gass. Future weight reductions I am thinking of are a carbon fibre, or fiber glass hood, fiber glass front fenders, and lighter wheels.

Blake

Rob's shop number is 503-233-3878. This is the best way to get ahold of him. Email was killing him, as he got a couple hundred technical questions a day, all requiring a thoughtful response! Now, I think he just prefers people call since there is no way to keep up with the flood of emails.

Spinner-D(eluxe)

I spoke with Rob just now, and came to the conclusion I am going to stick with my 13B 6-port, get it rebuilt and street ported plus get extensive oil mods, and use the 6 port sleeves, and run a Weber 48 IDA carb.
Also I want to find a pair of rotors out of an 89-91 NA engine. Anyone know where I can get one?


What do you think?

Blake

Sounds like a good plan. I love streetported 6-port motors and the 48 IDA is a very reliable, tunable, solid carb that does not suffer from hard cornering starvation like a lot of the setups. Very streetable but highly performance oriented. The only downside (to some people) is the lack of a choke, but I never had a problem even on my 13B peripheral port with 51 IDA, which got me through a 2 week, 8,000 mile commute in all kinds of conditions (hot, cold, wet, humid, elevation, etc).

Spinner-D(eluxe)

Is there a company out there that makes a manifold for the 6-port for the Weber carbs? I don't want to have to use the lower half of my old EGI manifold. That would look crappy.

Atkins Dan

I make the wrap over and side draft manifold for the 6-ports .

Dan Atkins

pp13bnos

iTrader: (1)

Blake pretty much hit the nail on the head. CJ

Spinner-D(eluxe)

Have any pictures? How much?

Rotortuner

you dont want the weber dcoe side draft. like rob said, you want and IDA which is down draft, racing beat sells them for the 6 ports and they are like 220 bux, mazdatriz sells them too, look on ebay too.

CJG

Spinner-D(eluxe)

I'll quote myself here. ROb suggested the Weber 48 IDA like you recommended. The thing I am not crazy about is using my lower manifold from my EGI system. I want a one piece manifold, but is there any advantage to using the lower manifold keeping the actuators and 6 port sleeves in place with a Weber carb setup?

It sounds like Atkins makes both a side draft and down draft Weber manifold for 6 port. Dan?

Looking on Racing Beat I didn't see a manifold for the 6- port for a webber. I did see a manifold for the 4-port. Maybe it's not on their online catalog?

I saw Mazda Trix had a manifold for the 6-port but it requires you to use the original lower manifold from the looks of it.

Rotortuner

Sorry, RB doesnt sell it, but mazdatrix sells it, its a complete manifold, it doesnt use the stock lower. Atkins only make manifolds for side drafts.

http://www.mazdatrix.com/r-idamanifolds.htm

part number 18104 250 bux

or if you want to wait a while and mabe save some money:

http://www.tweakit.net/shop/index.ph...990af47eab6116

CJG

Spinner-D(eluxe)

Great!!! THanks for the links!

84stock

iTrader: (5)

I would conside a "half bridge" on the 13b 6 port. Get the 5th & 6th ports street ported. Then get 12 primary plates and have the bridge ported. You'll gett he brap - brap, great top end combined with the 6 port and still keep some midrange torque. Keeping the SE rotors will save money and help with torque as well. The lighter rotors will rev better, but keeping your power a little lower will ehlp engine life, besides you won't have to mess with flywheel, etc. Holleys work well with the center floats installed, and are very tuneable if you know what to do. Consider the air pump mod for the 5&6 port activation, this way you can fine tune when they kick in.