Slater Posted December 7, 2006 Report Share Posted December 7, 2006 I am going to be swapping out my stock 15G soon, but decided to have a little fun first.I got a good deal on a shiny new 300/70 wastegate actuator (i.e. from a 19T and some 18Ts) and swapped it onto my stock 15G. Let me just say WOW. With the weak stock actuator, boost would fade at WOT and high rpms big time. I have a BSR stage 3 ECU BTW. Anyways, between shifts it would fade from 18psi to 12psi and finally 9psi. With the stronger actuator it holds like a rock at 15psi until redline. It still fades from 18psi, but that is just the 15G running out of breath.Also, part throttle boost is totally transformed. Boost comes on very smooth and very strong. The car is a complete blast to drive. Best $100 I ever spent. Link to comment Share on other sites More sharing options...
BlackT5 Posted December 7, 2006 Report Share Posted December 7, 2006 Good stuff :) Link to comment Share on other sites More sharing options...
prasamin Posted December 7, 2006 Report Share Posted December 7, 2006 :tup: no boost fade on my 19t! Link to comment Share on other sites More sharing options...
BlackT5 Posted December 7, 2006 Report Share Posted December 7, 2006 no boost fade on my 19t!There was on mine! :tdown: Link to comment Share on other sites More sharing options...
BtownVolvo Posted December 7, 2006 Report Share Posted December 7, 2006 Hmmm...300/70 on a 13g...[ponders] Link to comment Share on other sites More sharing options...
prasamin Posted December 7, 2006 Report Share Posted December 7, 2006 There was on mine! well, bent rods usually lead to fading everything. Link to comment Share on other sites More sharing options...
EricF Posted December 7, 2006 Report Share Posted December 7, 2006 I had none on my 19T either.. But I don't attribute it to the actuator really.Though, we did see an improvement (a slight one) on Brendan's wagon after we put a 16T actuator on in place of the stock 15G one. Link to comment Share on other sites More sharing options...
larryo108 Posted December 7, 2006 Report Share Posted December 7, 2006 Best $100 I ever spent.Slater. You got a part number and a source you mind sharing. You can PM me. I think my WG is fubared. No better time than now to upgrade. Link to comment Share on other sites More sharing options...
Guest Guest Posted December 7, 2006 Report Share Posted December 7, 2006 now see .. the 16t actuator on my car would boost up to 10psi untill 4500 where it would just take off to 20+ psi after that removed it and used a std 10psi t3 actuator and a new bracket and it is now rock solid boost wise. then again all of this was only after i did a 3.5" downpipe as with the 3" it was not an issue. i just do not understand why the white blocks lose boost with rpm and my car gained it on the same turbo Link to comment Share on other sites More sharing options...
prasamin Posted December 7, 2006 Report Share Posted December 7, 2006 Slater. You got a part number and a source you mind sharing. You can PM me. I think my WG is fubared. No better time than now to upgrade. I believe he bought it from another member here. Link to comment Share on other sites More sharing options...
larryo108 Posted December 7, 2006 Report Share Posted December 7, 2006 10-4. Thanks Pras. I'll have to look up a part number tonight. Link to comment Share on other sites More sharing options...
Slater Posted December 7, 2006 Author Report Share Posted December 7, 2006 I believe he bought it from another member here.Correct. Part number according to the "FAQ look here before asking" sticky is: 9471535 - 300/70 wastegate The nice thing is that the 300/70 acuator is available seperately from Volvo. I am pretty sure that the other ones are not and must be purchased as part of the turbo assembly. I am not 100% sure on that but I know for a fact the 300/70 is available seperately.I had none on my 19T either.. But I don't attribute it to the actuator really.Though, we did see an improvement (a slight one) on Brendan's wagon after we put a 16T actuator on in place of the stock 15G one.Which 16T? Angled or straight? Because the wg on my straight flange 16T was identical to the one on the 15G (wg specs are stamped on the bottom). I wonder if the improvement you saw was just the tired 10 year old 15G actuator being replaced with a new(er) one. Link to comment Share on other sites More sharing options...
Overboost850 Posted December 7, 2006 Report Share Posted December 7, 2006 Glad you are happy with it greg! I still have one on my 16T that has been pulled off for the 19T and I shared the exact same observations you do. AS for part numbers I only have a picture of the back of the wastgate with some random number on it :89-18952 and 8Z1 Link to comment Share on other sites More sharing options...
Greenchunks Posted December 7, 2006 Report Share Posted December 7, 2006 Maybe its cuz im only running 13 psi, but my car holds perfect boost with no creep to redline, and shows no fade anywhere between shifts or anything. 16T (striaght outlet I think was what the 98's had, right?) Link to comment Share on other sites More sharing options...
Overboost850 Posted December 7, 2006 Report Share Posted December 7, 2006 Maybe its cuz im only running 13 psi, but my car holds perfect boost with no creep to redline, and shows no fade anywhere between shifts or anything. 16T (striaght outlet I think was what the 98's had, right?)Correct on both fronts. Lower boost level is easier on the whole system and doesn't create enough stress to realize boost fade(on your particular car on your particular setup, other cars and turbos vary). And yes you have a straight flange 16T. :) Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.