Here is my situation: I have a T-88 34d and I don't think the stock ports can support that big of a turbine. Does anyone know when a T-88 spools on a stock port motor, VS street port VS bridge? So i don't know which i should get done bridge or street port? I can get it done for 30,000 yen per port or 250-275 dollars. I think it will be worth the money in the long run, with that big of turbine. I want full boost no later than 4-5k. Plus does anyone have maps for street port or bridge with a T-88?

 

The stock ports can support that, yes, with a little help. What size turbine is that turbocharger using? Spool time will be dramatically different based on other factors, as well. This is a pretty open-ended question.

If you're using an aftermarket EFI (I gather that you are), you shouldn't have many dramas setting it up around a bridgeported 13B. But, remember, when introducing serious amounts of overlap into the picture, you'll be dramatically reducing streetability of the vehicle. We've got a half-bridgeported 13BT here that's running quite well on the street, but honestly I wouldn't recommend anything more aggressive than that.

As far as having maps, you'll be hard-pressed finding anything like that. There's way too much data needed to have a 'base' map made. Even then, you'll have to have it tuned specifically for your car.

B

 

From the research that i have done a BP does not make that much more of a difference compared to a Large Streetport. Plus on the BP i have heard of the bridge collapsing.

 

I will probaly just go with street port, bridge is a little over kill. You can get into the 9's with a big street port and that is fast enough for me!!! MMONACO what times/hp are you running? And are you happy with the e6k? T-88 and t51 are some what comparable. Yours spooling faster!!!

 

im building the car as we speak. im doing the fuel i have almost everything, just waiting for some time so i can put it together and tune it. But it will be done by the end of may. I have only mess around with the e6k a little bit, but if i had to do it again i would for sure do the PFC with datalog, less hassle and a better interface.

 

That greatly depends on how the BP is cut. If you keep the eyebrow-style cut within the lines of the rotor housing, keeping enough iron for the water jacket o-ring land thick, all will be well. Plus, keeping the bridge thick and wide will re-inforce long-term stability.

I do believe it makes a considerable difference, actually. I was against it, at first, but once we got the engine running and making power, it made a whole lot more torque than it would have.

B

 

Sure, if you have a car that weighs 2000lbs, it's easy to get a car into the 9's.

B

 

BDC who did your bridge? I know someone that has a full bridge and he is really happy with it. Plus it sounds really good, very different than stock. I was just saying it is possiable to get into the 9's, i think 11's are good enough for street driven car, 10's are almost unstreetable . Unless you want to die a little younger, and kill another FD.

 

I was talking about a friend of mine's car and I'm the guy who did all of the porting and the BP cutting. We did a half-bridgeport on his Ser 5 13BT motor (cutting eyebrow BP's on the front and rear endplates) and it really REALLY worked a whole lot better than I thought it would. We were even able to use stock 2mm apex seals to boot! Here's what the cuts look like:







On the 3rd picture, you can see that I cut the eyebrows to edge up against where the rotor housing lays down but no actually go into it. I believe doing this will possibly be a detriment to overall engine life as it makes the iron thinner for the inner water jacket o-ring land. I've also heard horror stories of that busting from too much boost when they're cut too thin like that.

B

 

BP all the way. I just got to ride in my friends 94 R2 with a BP, with a turbonetics T70 BB turbo at 25 psi. And, this port made a big difference over the street port he had before. This car was fast before but, now it's extremely fast.

 

I bet it is. My friend's car made a whole lot more torque at the same boost. His TO4E 60trim acts alot like a stock turbo on a stock motor now -- real peaky in the mid-range then falls on its face later. Pretty cool.

I think it makes using these larger T-series turbos worthwhile.

B