Davinchi To4r Kit
06-25-2004, 08:13 PM
#131
Member
Join Date: Feb 2002
Posts: 94
A quick note that Ron has been a super good Guy. He will get things fixed and hopefully the next run of kits will be perfect. The good price does leave a bit of room for error but it will be nice to have it all fitting properly. I expect some really good HP from this new GT wheel.
Also, I just took the mani off and had all the flanges machined so there should be no leaks anymore. Ron said He would do it but I am to far away. The machinist new it was from My RX7 and all it cost was 24 cold beer for the shop. So Ron if I ever get down there Beer is on you.
After having 4 turbo kits I would recomend this kit for the price and the service has been good.
Steve
Also, I just took the mani off and had all the flanges machined so there should be no leaks anymore. Ron said He would do it but I am to far away. The machinist new it was from My RX7 and all it cost was 24 cold beer for the shop. So Ron if I ever get down there Beer is on you.
After having 4 turbo kits I would recomend this kit for the price and the service has been good.
Steve
06-25-2004, 10:47 PM
#133
Member
Join Date: Feb 2002
Posts: 94
Greddy, APexi, custom T-72, and now Davinchi.
All the kits come with different parts and none are the same. Some might have the BOV and an intake where others do not. My last T-72 mani was built very well and will last forever but the Guy that made it was very hard to get ahold of and never did get Me all the parts I bought.
Ron seems like a good Guy. They really messed up My T-72 upgrade but they have done everything they could to get Me going again. Sometimes good people skills will take a company a long way. They have made some minor mistakes with there kits but now they know what to do. I think the price they are selling them for is reason enough to buy it. You could start piecing these kits together but there are always problems like fittment and missing certain things. The bottom line is that the price is good, and the fittment is good (Now anyways). How much HP different kits make is a up to the tuner not the kit. I would bet if You took the best made mani and DP and used the same turbo on a cheaper mani and DP like the Davinchi there would be only a few HP difference. How long the mani and DP will last is another story but from looking at the Davinchi parts they will hold up long enough for the use I put them through. If strength is a worry get some supports made.
They answer the phone and get things done to help You out. I will post some dyno numbers soon and hopefully You will see some nice numbers. I have ran 16 PSI and pig rich as I have not had much time to tune. It pulls very hard and suprising that it pulls almost as hard up top as the T-72. After I pull some fuel I will be tuning to 20 Plus @ 10.5 AFR. With My new fuel pump 16 PSI is 56% injector duty so 22 should be a safe number with the WI.
All the kits come with different parts and none are the same. Some might have the BOV and an intake where others do not. My last T-72 mani was built very well and will last forever but the Guy that made it was very hard to get ahold of and never did get Me all the parts I bought.
Ron seems like a good Guy. They really messed up My T-72 upgrade but they have done everything they could to get Me going again. Sometimes good people skills will take a company a long way. They have made some minor mistakes with there kits but now they know what to do. I think the price they are selling them for is reason enough to buy it. You could start piecing these kits together but there are always problems like fittment and missing certain things. The bottom line is that the price is good, and the fittment is good (Now anyways). How much HP different kits make is a up to the tuner not the kit. I would bet if You took the best made mani and DP and used the same turbo on a cheaper mani and DP like the Davinchi there would be only a few HP difference. How long the mani and DP will last is another story but from looking at the Davinchi parts they will hold up long enough for the use I put them through. If strength is a worry get some supports made.
They answer the phone and get things done to help You out. I will post some dyno numbers soon and hopefully You will see some nice numbers. I have ran 16 PSI and pig rich as I have not had much time to tune. It pulls very hard and suprising that it pulls almost as hard up top as the T-72. After I pull some fuel I will be tuning to 20 Plus @ 10.5 AFR. With My new fuel pump 16 PSI is 56% injector duty so 22 should be a safe number with the WI.
06-26-2004, 05:43 AM
#134
Senior Member
Thread Starter
Join Date: Jun 2002
Location: La Plata, Maryland
Posts: 9,725
Originally Posted by 9BASE3' date='Jun 25 2004, 11:48 AM
Absolutely. And PLEASE, if you wan't anything replaced or fixed let Ron know. I'll try to stay out of the way this time..
Just out of curiosity; did you get the chance to run on the WG spring alone? Is the boost creep still an issue? I ask only because no other gates besides the HKS will fit the manifold without modification. I had to weld an adaptor to mine to accept the TIAL. I'd give you mine if it was a direct replacement. I want to make sure this deal isn't closed until you are taken care of. Let Ron know what to fix and he will get it done. Feel free to ship the DP back if you would like it fixed. I'll personally pay to overnight it back to you.
Again Dave, I'm TRUELY sorry all of this happened.
Just out of curiosity; did you get the chance to run on the WG spring alone? Is the boost creep still an issue? I ask only because no other gates besides the HKS will fit the manifold without modification. I had to weld an adaptor to mine to accept the TIAL. I'd give you mine if it was a direct replacement. I want to make sure this deal isn't closed until you are taken care of. Let Ron know what to fix and he will get it done. Feel free to ship the DP back if you would like it fixed. I'll personally pay to overnight it back to you.
Again Dave, I'm TRUELY sorry all of this happened.
I am going to bite the bullet and buy a real HKS wastegate. I really do not f eel like dicking with this one trying to make it work. I am less than confident that it ever will even with the 14.7 spring. I am pretty sure that the turbo is not seated down against the manifold and that is the cause of my leak. The fit was extremely tight and I belive that the bolts may be cockeyed. So I am going to open the holes on the turbo some and get the flange pedistol machined flat. After all that I will go back to Demetrious to resume tunning.
06-26-2004, 11:19 AM
#135
Senior Member
Join Date: Feb 2002
Location: Frederick MD
Posts: 6,331
Originally Posted by Fd3BOOST' date='Jun 26 2004, 04:43 AM
Yes I did run the spring rate and it goes way above 11.5
I am going to bite the bullet and buy a real HKS wastegate. I really do not f eel like dicking with this one trying to make it work. I am less than confident that it ever will even with the 14.7 spring. I am pretty sure that the turbo is not seated down against the manifold and that is the cause of my leak. The fit was extremely tight and I belive that the bolts may be cockeyed. So I am going to open the holes on the turbo some and get the flange pedistol machined flat. After all that I will go back to Demetrious to resume tunning.
I am going to bite the bullet and buy a real HKS wastegate. I really do not f eel like dicking with this one trying to make it work. I am less than confident that it ever will even with the 14.7 spring. I am pretty sure that the turbo is not seated down against the manifold and that is the cause of my leak. The fit was extremely tight and I belive that the bolts may be cockeyed. So I am going to open the holes on the turbo some and get the flange pedistol machined flat. After all that I will go back to Demetrious to resume tunning.
Call Ron. I personally don't think that you should have to "bite the bullet" if something we sent you doesn't work.
Justin
06-29-2004, 08:50 AM
#139
Senior Member
Thread Starter
Join Date: Jun 2002
Location: La Plata, Maryland
Posts: 9,725
Well, I ordered an Authentic HKS wastegate from RX7Trix. I did not bother contacting Davinchi as I didn't feel like i was getting anywhere with them. Unless I wanted them to send me another POS wastegate that is. So the new wastegate should be here Friday. Aso Rikki was over the other day and noticed my fuel system was not holding pressure and I belive that I know why. (remember in keiths rails how to when he tells you to replace the bottom nut from the AWS block off and put in a panhead screw?) Anyway I need to do that because it's preventing my injectors from seating and creating a proper seal. That might be why the car stalls out on occasion. Other than that I will pull everything back off this weekend, drill the holes out on the exducer housing so I can get that to seat properly then mount the new wastegate. That should just about do it. Of coarse there is still some more tunning to be done.
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