George D

After some tuning next weekend. I'll datalog everything and share. I'm using the TEC GT, but I'm sure John knows this via memory.

George

David Floyd

Nope....it is HUGE !!!

Glad Tom posted a pic of his installed as I just bought a TB like that from 95ONE.

Tom M'Guinn

Wow, quite a surprise to find! Not that it makes it ok, but I discovered reinz supplies 951 style gaskets when you order the 89 2 7 gasket. They even put them in the 89-only head gasket set. You have to go to Porsche or find a different mfg to get the correct oval versions. I'm surprised no one noticed when the intake was installed. I assume the intake itself is ported to match the 2.7 head and not still round like the 951?

Tom M'Guinn

Wow, quite a surprise to find! Not that it makes it ok, but I discovered reinz supplies 951 style gaskets when you order the 89 2 7 gasket. They even put them in the 89-only head gasket set. You have to go to Porsche or find a different mfg to get the correct oval versions. I'm surprised no one noticed when the intake was installed. I assume the intake itself is ported to match the 2.7 head and not still round like the 951?

333pg333

Does seem strange...

Tom looks great. Be interested to see new dyno figures with all the new goodies. Especially the actual curves compared to when you first had it done.

David Floyd

Tom, do you have any other picture angles of the mounted TB and intake ?

special tool

Wow!
The information and specification in this thread is so old hat that I have to chuckle.

Some of us that took chance on the prototype of these things risking funds are laughing right now.

And when I say "us", I mean me.

Be carefull if you challenge that, gents.

333pg333

...er OK your Toolness, but which particular parts are you referring too? ?

George D

Is this a post to help us old hat folks that are using the 928 TB? ST, we all risk funds on projects. Laughing at us without sharing personal knowledge pertaining to 3.0 motors and associated parts isn't helpful to me or others sharing on this platform.

I'm seeking knowledge on this board, and sharing what I personally know based on my experience. I'm a 951 fan, and appreciate all help towards my intent of creating a great car based on an old platform that doesn't get much support. If you know of parts we are using that create comedy, I'd like to know why?

Sharing on this board, good or bad, is why I'm a member. I just want to help others that might want my experience with these cars. I'm just one that has owned many 951's. I've owned these cars, and 13 other sports cars over the past 15 years to feel comfortable sharing my personal experience.

Being helpful is great, laughing at my attempts to create a great 951 seems contrary to your post. You have better ideas, share them. Your knowledge in building power and lasting 951 4 bangers is useful, as long as your intent is to help.

I may have taken your post in the wrong way. Post something helpful based on your experience.

Hope all is well with you and yours.

Regards,

George

George D

The 2.7 head and my intake is oval to match. The stock gaskets are round. We cut the new intake gaskets to match the intake and head oval. My car hit over 500whp with the stock round 951 gaskets. We tuned the car using the round factory gaskets, not knowing that we had this restriction in every port.

Now that we replaced the gaskets, the car runs much better, but VERY rich. We will tune based on the new found flow of air. Removing such a restriction should create better power.

Since we replaced the gaskets the car spools faster, and feels much better on top. We'll see how much power was lost at the next dyno session.

George

DDP

Your engine bay looks great, Tom. May I suggest some T-bolt clamps instead of the double hose clamps?

And Special Tool, holy ego trip man. Get off your high horse. What's the deal? Why the hate?

David Floyd

ST can be a little hard to understand when he forgets to take his meds

Tom M'Guinn

I have the spring loaded versions, but they are a pain to get installed given their bulkiness, so I tend to leave them off until I'm sure I won't be removing the pipes for a while. Agreed they are worlds better than the stock clamps. The stock clamps leak around the bolt area unless the hose fits skin tight on the pipes.... (or you use two clamps with the bolts areas spaced apart).

Tom M'Guinn

I can take more and send them to you. PM your email (I probably have it somewhere, but...)

The TB has a different bolt pattern from the 951, so will not bolt to the 951 manifold without an adapter or changes to the intake. Also, at 75mm, the throttle blade is larger than the TB opening on the 951 manifold. You could probably open up the manifold to get closer, but not sure you could get it to 75mm by just grinding. That's primarily why I went with the SFR intake.

As for the TB configuration, I opted to develop my own approach, in lieu of using Tim's set-up like on George's car. I wanted to keep all the linkage and spings from the stock TB in place to the extend possible. So, I worked up a cam wheel that could be welded on to the stock TB linkage without interfering with anything (from a non-Porsche TB; iPhone pic below). The 951 throttle cable attaches just like stock, with the TB performing as originally designed. I had to cut the aux water pump bracket and make room in the brake shield to clear it all -- and plan to weld up the brake shield and recoat it eventually.

95ONE

I don't think alot of people know about this mod, let alone that you have to adapt the Throttle cable wheel to work with the 951 throttle cable. David Got one from me already adapted.