engine@ idle.. 750 Rpm's 12 inches of vacuum on a decently large streeport..


http://s254.photobucket.com/albums/h...Picture012.flv

picture of the actual streetport on my kid's turboII.. and need I say she drives her turbo II like a MAD women every single day.




http://i254.photobucket.com/albums/h...treetport3.jpg

my kid's turbo II engine was the first guinea pig. 3 years later still pulls 12 inches and 125 to 128psi of compression on the tester. those rotor housings had flaked edges.. I repeat, I'm a skeptic that turned into a believer.. cheers..

my nephews series 5 turbo II. also has this work done to it. his rotor housings had no flaking to begging with. this engines pulls 14-14.9 inches of vacuum with my streetport.


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I like those ports! No wasted little digs upward on the housing side of the port to delay port close while not helping flow.

I think they might be a little big for my blood though. Mine pulls 18" Hg at Idle (5 BTDC and bone stock close time).

Still, I really like this re-chromed housing idea.

Its not re-chroming, it's machining the existing housing. Jon brought a few of these to the rotary factory meet and I was impressed with them. He'll be getting a pair or two of mine to machine down shortly.

I'd like to hear from Goopy about the basic process they are doing to
achive this. Not that they have to give away any proprietary info, just
an outline of what they do to achieve this and what tech they use
to make it happen. Like, is this a grind down and then recoat with
some surface treatment or is it some sort of resleaving of the inner
surface.

TT said its just a machined surface. So if thats the case the housing to
rotor apex seal clearance increases. I expect this is why they recommend
their apex seals. How much typically does it increase I wonder?

^ I'm guessing it's a similar process to having irons lapped. I doubt the amount they take off will affect housing to apex seal clearance. Apex seal springs are pressing the seals into the housing. It's evening out the surface of the housings and thus providing better compression.

From Judge Ito's endorsement, it breaths new life into worn housings.

Oh, so they don't re-crome them?

That makes it much easier, as the criteria can be easily determined - no gouges through the chrome.

no re-chrome....

In today's economy everyone is looking for cost effective solutions and the best way to get maximum performance for their dollar. That was Goopy Performance's thinking and objective behind our ROTOR HOUSING REFURBISHING service.

When any of us consider rebuilding a rotary engine, the condition of the housings is a key factor. Up until now the options have been either 1.) use your housings as is or 2.) buy new housings at the cost of approximately $1,300 per pair or more. If porting had already been done on these housings, the real cost of replacement could include an additional $200 to $400.

Goopy Performance's process provides a solution at approximately 10% of the cost of replacement while providing not a 100% new surface for your seals to break into but a "like new" surface in the very high 90 percentile (95-99%) in most cases.

Here is an attempt to answer most of your questions from recent posts ...

1. We are NOT resurfacing or adding new material to the housings. We are refurbishing or refreshing the existing hard chrome surface.

2. NO we do not have data or photos showing results after 20,000 miles. However, we have had very high HP racers running our refurbished housings with our Goopy Performance Apex Seals for a full race season (40-50+ passes) while maintaining very high compression and no damage of any kind.

3. PRICING is $125 US per pair of housings with you paying for the shipping to and from Goopy Performance. This includes media blasting of the housings to achieve the "like new" appearance as seen in Judge Ito's photos. Please do not send dirty, greasy housings or there will be an additional $25 “Cleaning Fee”.

4. Our refurbishing process greatly improves all of the conditions mentioned in various different posts ... scratches, scoring, gauling and flaking edges. Our process provides a relatively flat, uniform, matte housing surface for your new seals to break-in to. The true measure of the effectiveness of the process is the compression numbers that are achieved when your engine is rebuilt, not just how the housings look. Our experience with our refurbishing along with using our Goopy Performance Apex Seals is that we have consistently produced compression readings at or above factory stock specifications. Also refer to Judge Ito’s experience after 3 years of having compression numbers of 125-128 psi.

5. The SIDE PIECE on the Goopy Performance Apex Seals does not come to such a sharp point at the housing surface like if does on many other apex seal designs. We believe this design improvement yields less wear and deterioration at the housing edges that cause potential compression leakage.

6. In most cases the amount of material removed to achieve these “like new” results is relatively insignificant. In our experience, utilizing our Goopy Performance Apex Seals which are manufactured at the same height as OEM seals, we have not experienced any issues due to the removal of this minimal amount of material.

7. If you are unsure if your housings are candidates for our refurbishing process please send photos and description to info@goopyperformance.com before expending your time and resources on packing and shipping.
However, if we receive housings that we consider to be beyond repair with our process, we will notify you before any work is done.

8. We provide our housing refurbishing service on all models of rotor housings.

Please email to info@goopyperformance.com if we have not addressed all of your earlier questions or new ones have come up in the meantime.

awesome stuff.

Do you guys do other engine work - rebuilds, porting, etc?

thank you..

will it matter if u are using new or used apex seals to have a difference with these redone housings?