riffraff

what is the reliability and steetability of a half bridge (4-port 13b)??

this would be going into a daily driven first gen.

Bridgeported

Is it going to be turbocharged? How much PSI if so?

The number I see most often for a bridgeported 13B is 50,000 miles life expectancy. For a partial bridgeported 13B one would assume the life expectancy might be a bit longer, but I doubt it would be much more.

Streetability really varies from person to person. For instance, some guys in NZ and PR will drive P-ports on the street and say it's not that bad, but in North America almost everyone (including me) says a P-port is race only. Anyway... you will lose low end torque, but gain TONES of power in the upper revs. Your overall torque will be higher also. A partial bridged engine might not be THAT bad down low though.

Either way, a partial bridgeported 13B is definitely streetable, and not bad to drive. It's going to be very loud though, espcially since with a b-port you need a huge free flow exhaust to make power, which means hard to keep quiet.

riffraff

it will be n/a, with either a weber 50dco or efi (if i can find something good).. the reason i was thinking about going half bridge instead of a full is so that there would be a little more down low , ad the noise would be a bit less. the exhaust that i was planning on running is the current one that i have on my streetported motor.. rb headers , going into two powerpulse presilencers, combining into one pipe after the rear axle going into a high flow powerpulse muffler.

Bridgeported

Sounds like it should be easily streetable and not overbearingly loud. Try to get some pics of the project when you do it!

Logo

riffraff, I think that your biggest problem is merely going to be finding people who've actually done this! I've considered doing the same thing in the future but at this point I'm just not sure of what port I want to run. However, I definatley want to run an efi setup. Injection Perfection and TWM both make excellent setups for the 13b/12a 4-ports. The IP is IDA and the TWM is DCOE.

riffraff

i would probably have rob at pineapple racing do the porting.. so i am not worried about that end.

i was looking at twms setup, but donot really want eveything sitting ontop of the exhaust headers...
i will check out ip though.. thanks

Logo

No problem.

Personaly, I like the IP setup better. It will probably be cheaper and avoid most heat issues (however, that could be solved with a simple heat sheild). You'd also avoid any clearance issues that might be presented with the TWM setup.

riffraff

heatshielding is not an issue.. right now i am running one of their style manifolds, with custom heat shielding.. clearance is not a problem either, or atleast i donot think that it is... i just like the idea of loger intake runners, and having it sit up on the motor.

not sure about cheaper (donot know what either of them would run).. i would probably run a haltech with what ever efi setup i decide to go with.. does anyone have any experience with either setup>??

Logo

riffraff, The reason the TWM route would be more expensive (assuming that you use their manifold) would be due the fact that it runs two weber style tb's.

riffraff

i donot think that you have to run their dual manifold..
but all stuff to look into.

i am going to go the safe way on this project, and not start it until i have everything figured out..so i have time.

Logo

You're right. You don't HAVE to run their manifold. You could actually run any dcoe manifold you like.

riffraff

okay.. update.. talked to rob @ pineappleracing.. and i will probably not go with a half bridge.. so it is now either a full bridge (mmmm) or a really large street port..
or there is always the ever popular turbo swap. (kinda want to stay n/a however, if i can get enough power to satisfy myself that way)

Bridgeported

My first choice would be turbo, but if you want to go NA you probably can guess which type of porting I would suggest!

riffraff

advantage of n/a is obvious simplicity.
(and if i can afford ceramic apex seals, then i will probably go bridge.. )

right now this project is in research stage. i am not planing on doing anything for a nother couple months (hopefully march like.). so i am just trying to get my information and bounds straight.