Bridgeport?

[Roundabout-Now]

Well my car is booked in to Pips for an engine rebuild. It\'s going to get the dowelling redone (better) while it\'s there as well. Also considering various things to do with the engine mounts at the same time (haven\'t mentioned that to Pip yet!).

But the big question is .....

Bridgeport?

Yes, no, maybe?

Street driving is not really an issue, as it is going to be used more as a track/drag car. One thing that did concern me was reliability. Does this drop drastically with a bridgeport?

Any advice, comments, ridicule, etc. will be much appreciated (or tolerated )

PS: anyone got a T-88 or T-51 lying around? I\'ve got a few pence left to upgrade the turbo. Then I just need to upgrade gearbox, driveshafts, tyres, diff, injectors, fuel line........:rollin

[DRAGON]

Pip wont do another bridgeport.
If I was you I would go big big street port. Bridge will cost alot more to port and to tune, lots more hassle than a street.

[Carl]

Glad to see that you are going to get it sorted.
I would not reccommend bridge porting it.It will be very quick without going that far and much more reliable too.
Kind regards
Carl;)

[20B_boy]

The Cosmo plates are a good starting point for a nice BIG street/extend port. Compare them to an FD\'s. Use FD rotor housings or change the exhaust port inserts as the stock 20B ones (if they still remain) are not nice (one reason why the 20B is so quiet in the Cosmo I believe). I have 3 ported 20B plates in the FC which we had apart; it looks as if FD inserts were put in AFTER the porting was done to the housing?! Its not very nice looking, big ridge/mis-match between floor of port in housing and the insert

For drivability, longevity and ease of tuning as Ross and Carl have said - and as I said the other day, dont bother BP-ing. A big \'normal\' port will get you where you want to be. Especially if you get a big turbo and add lots of NOOOOOOOOOS!!

Good luck, keep us updated with how things are getting on. Let me know if u need or are getting another turbo manifold made/sourced as I may be after another also for comparison purposes.

[BUZNUTS]

Go the Bridge port. Just do it!!!!
Have your engine secondary b/p and have the engine assembled with the 2 piece seals and the assist piece toward the primaries. You will not be disappointed, if you can have it tuned properly.
REgards-Anthony

[maximtaylor]

:rollin

I like your attitude Anthony - I think talking to you for too long could be very dangerous on the wallet though

MORE POWER!!!!!!!!!!!!!!!!!!!!!! YEEEEHARRRRRRR!!!!!!!!!!!

Max

Originally posted by BUZNUTS
Go the Bridge port. Just do it!!!!
Have your engine secondary b/p and have the engine assembled with the 2 piece seals and the assist piece toward the primaries. You will not be disappointed, if you can have it tuned properly.
REgards-Anthony

[20B_boy]

Originally posted by BUZNUTS
Go the Bridge port. Just do it!!!!
Have your engine secondary b/p and have the engine assembled with the 2 piece seals and the assist piece toward the primaries. You will not be disappointed, if you can have it tuned properly.
REgards-Anthony

Its a 20B Anthony, does this change your mind at all out of interest?

[BUZNUTS]

He said that it was not going to be orientated as a street car anymore so, DO IT, DO IT, DO IT. Not that you will get to notice much of a difference on the street though as a turbo 20b should be breaking traction almost anywhere on the street. We have a BP 20B turbo street car in Melbourne inspired by me.
I can get you a 51R roller with  72-82mm from around $3100Aud. We have built 15 turbo bridge ports for street cars this year (not 20B though).
Have you ever heard a 20b BP? UNFKNBLVABLE.!!!!!!!!!
REgards-Anthony

[20B_boy]

Man, what a tease!

[BUZNUTS]

DO IT, DO IT, DO IT, DO IT, DO IT, DO IT








pssst. DDOOOOO IITTTTTTTT!!

[scooby_si]

go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on go on lol
Si ()

[Carl]

Originally posted by BUZNUTS
Go the Bridge port. Just do it!!!!
Have your engine secondary b/p and have the engine assembled with the 2 piece seals and the assist piece toward the primaries. You will not be disappointed, if you can have it tuned properly.
REgards-Anthony

Hi Anthony,
Remember that this is a road going car that gets regular use in traffic jams and the like on our poor clogged up British roads.
Kind regards
Carl

[GaryS]

Yup - if you read what Roundabout writes, he says it will mainly be for track/drag, not entirely - so it will still need to be used for some road use.

[Carl]

Hi Anthony,
Last year I built a similar 13b FD engine based on only bridging the secondaries for Geff at ReWorx.It was pretty successful but the turbo was pretty small,Geff has since built an engine himself that is using Cosmo 13b side housings and plenum and is a bit quicker than the bridge still at the moment on the same turbo(Not for long).
I did what you have just suggested with the 3mm apex seals  and it worked a treat.Sounded good too.
Ross at Dragon has also very successfully done the same and now has a very fast car that was a pleasure to watch the other day.
Kind regards
Carl:)

[Carl]

One of the problems we have here is that the RX7 3rd gen is cheap to buy but many people who want to make big power don\'t have alot of money to do the work how it should be done.If they did have the money then they would probably be driving something else.That means that at the moment there are not many in the UK who have seriously modded rotor motors.
Also the old Skool cars are not very popular here in spite of being able to get one for reasonable money.
It is hard trying to explain to various ones that it is very expensive to have a quick rotary powered car,that is why the encouragement is not to great to go for a bridgeport.
Not to say that if someone came to me for an all out car with the works that I would not do it,I would love to!
Kind regards
Carl