|
My next post after that :
Originally Posted by Brettus
(Post 4935524)
As far as AR choice now that I have all the information ..... as I said before .......I agree.
|
a rare moment for sure, but true :lol:
. |
Had a great day at 'Impulsive' rotary only event today.
Engine got well and truly thrashed (running 11psi). Did lots of roll racing and she held up really well. Won more races than I lost............ and these weren't slow cars. Noticed I got a jump on most of the cars from the quick spoolup in 2nd but once I got into 3rd she tended to fade against the high horsepower cars. Got this one video . Sorry about the quality , hope there will be some others. Very close race ... can't remember what the car was though . |
Originally Posted by Brettus
(Post 4974249)
Had a great day at 'Impulsive' rotary only event today.
Engine got well and truly thrashed (running 11psi). Did lots of roll racing and she held up really well. Won more races than I lost............ and these weren't slow cars. Noticed I got a jump on most of the cars from the quick spoolup in 2nd but once I got into 3rd she tended to fade against the high horsepower cars. Got this one video . Sorry about the quality , hope there will be some others. Very close race ... can't remember what the car was though . https://www.instagram.com/p/CkAh_oegKf9/?hl=en Sweet. IIRC you are pushing around 400 whp now right? |
Originally Posted by Killawatts
(Post 4974252)
Sweet. IIRC you are pushing around 400 whp now right?
|
maybe I should ship out the EFR7163 hybrid for a test fit … :suspect:
it’s longer end-end than the G30 though. So no guarantee. . |
Originally Posted by TeamRX8
(Post 4974262)
maybe I should ship out the EFR7163 hybrid for a test fit … :suspect:
it’s longer end-end than the G30 though. So no guarantee. . |
Better video, I raced most of the cars in the above sequence , lost three I think and won the rest ...but this is same race as above :
My race starts at 1.00 Facebook Post |
Some pics from yesterday . Thanks to Donna Haydehttps://cimg5.ibsrv.net/gimg/www.rx8...053b503c92.png
https://cimg6.ibsrv.net/gimg/www.rx8...9ff90dbcc4.png https://cimg7.ibsrv.net/gimg/www.rx8...f9fee92144.png https://cimg8.ibsrv.net/gimg/www.rx8...2033774240.png https://cimg1.ibsrv.net/gimg/www.rx8...8bdc048a96.png |
|
https://cimg1.ibsrv.net/gimg/www.rx8...5c0d461e98.png
Best match up of the day .... very close finish but lost by a bumper. https://cimg2.ibsrv.net/gimg/www.rx8...95e21697e1.png |
Excellent pics. Looks like lots of fun!
|
It surely is the No.1RX8
Very awesome!
|
You know it's a good day when it's sunny, you see and hear rotaries while the scent of premix fills the air.
|
Currently 1000kms in on a road trip around the South Island . I'm without my handbrake so good chance to put on some kms and give her some jandal !
So far it's been freakin' AWESOME ! pics to come .... |
https://cimg1.ibsrv.net/gimg/www.rx8...efe44c4482.jpg
Relaxing after another hard day behind the wheel. Queenstown to Glenorchy road is absolutely stunning. Too much traffic to have fun though. https://cimg7.ibsrv.net/gimg/www.rx8...6f5295d0b7.jpg Lake Wakatipu https://cimg1.ibsrv.net/gimg/www.rx8...ba8eac1107.jpg Wakatipu again https://cimg2.ibsrv.net/gimg/www.rx8...9f7dbcf564.jpg Just doing my bit for Tourism NZ |
https://cimg9.ibsrv.net/gimg/www.rx8...bf151dd9b2.jpg
Pulled into this motorsport track just out of Cromwell for a look through the museum https://cimg0.ibsrv.net/gimg/www.rx8...8513ba8832.jpg Lo and behold ............. the only car buzzing around the track was an RX8. https://cimg3.ibsrv.net/gimg/www.rx8...194db76cd3.jpg Met this cool couple (Lloyd and Tania) and before you know it I was in the car as a passenger, doing laps! https://cimg4.ibsrv.net/gimg/www.rx8...38d011eae6.jpg The circuit is an absolute masterpiece with corners taken to reproduce those from famous tracks around the world. https://cimg3.ibsrv.net/gimg/www.rx8...e9592826ee.jpg Got this shot later in the day with Mt Cook in the background. Had a slow drive back to Christchurch as the car developed a strange noise under boost. Suspect something is up with an intake pipe. Will investigate tomorrow. |
Strange noise turned out to be a couple of loose bolts holding turbo to manifold . Need to find a solution to that as it's happened before.!
|
Looks like a nice trip around the South Island. Are you doing the trip by yourself? Have you seen many other RX8's on the road while you've been doing your trip?
Have fun |
https://cimg4.ibsrv.net/gimg/www.rx8...444973104a.jpg
Taken near Nin's Bin (great fush N chups + crayfish) on Kaikoura coast. Arrived home last night. An extra 3000Kms put on the clock. Apart from the loose bolts mentioned above, the car performed flawlessly. A major reason for doing the trip was to make sure the manifold/turbo/engine combo performed without issue under sustained driving conditions. As far as I'm concerned it gets a big tick on that one. |
Originally Posted by Rotaman
(Post 4974985)
Looks like a nice trip around the South Island. Are you doing the trip by yourself? Have you seen many other RX8's on the road while you've been doing your trip?
Have fun |
Did another event this weekend . Mad Mike's 'Summer Bash'. Only entered in the 'cruise' portion of the event which is supposed to be driving around the track at moderate speeds. However this tends to devolve into multiple impromptu roll races with whoever wants to take you on.
So ......... I got to roll race with all manner of performance car. I have to admit that I took the back seats out, plus, it was only me in the car vs most other cars had two or more occupants. That being said ... the turbo Renesis pwned ...lol Hoping to get video (taken from the other car) of mine (at 12psi) vs an FD running 16psi and 440ish whp with a passenger ..... pretty even race but went to the FD by maybe half a car. Spent Two and a half hrs on track doing this .... engine is fine , gearbox is ..............dead ! |
So to give the whole story here :
My car : Stock block Renesis running 12psi on 98Ron pump gas with 5L of premixed ethanol added . Back seats removed. APV ports restricted (to reduce top end power and help stock engine last) . Approx. 360whp as measured by VD. I didn't hit the gas till I heard his turbo spool.... His Car : FD RX7 with full cut bridgeportd engine running 16psi (dynoed at 430+whp IIRC) on pump gas 98Ron . Also had a passenger and a big woofer in the back. |
I took my sick 5 spd gearbox in to get rebuilt and this was the main culprit . Both input shaft and output shaft needed to be replaced due to this roller bearing collapse and subsequent grinding into both inner and outer bearing surfaces. Apparently this is a very common failure point for these gearboxes. For reference .... noisy in neutral,1st,2nd and 3rd . Plus the 2-3 shift was dodgy which he said is a result of the shaft movement rather than a syncro issue.
Learnt quite a bit . Apparently the 5 speed box for the RX8 has quite a few internal differences to the RX7 box. Input shaft , syncro rings , ratios to name a few. https://cimg2.ibsrv.net/gimg/www.rx8...f8dd417a9b.jpg Rebuilt box is back with me now so I have work to do ................ New bearings , input and output shaft , 4th gear syncro . Cost a bit but looking forward to having a decent gearbox in the turbo car at last. https://cimg5.ibsrv.net/gimg/www.rx8...460bdd2ae0.jpg |
I had that 2-3 shift issue with a NA S5 gearbox... it was rebuilt by a well-known engine builder (who also did transmissions), but the issue remained after he rebuilt it and warrantied that rebuild. I'm guessing there was probably a similar issue.
Glad you found it. These transmissions are very nice when working well. |
they break easier under power than the similar FD box, but should be fine for your purposes.
the issue being that Mazda made the gears narrower to fit in the extra synchros that the FD box doesn’t have. The FD guts can be swapped in, but then you get a 30 year old design that has known issues like 5th gear synchro going bad. not really any other good options without spending $4k - $5k making the initial swap, but in the long run it can be less expensive without the headaches . |
Yeah ...it's done well so far . But had that rattle when I first bought it second hand and it seems every one I've heard about has ...issues!
|
Strokercharged blew 3rd gear out of one, but was likely pushing 350+ ft-lbs through it.
. |
Rebuilt gearbox fitted and tested . No more rattles !
|
Originally Posted by Brettus
(Post 4948546)
Yes .... I know that ...now. For some reason I just expected the turbo to fill the same space and didn't even look at the specs.
Makes absolutely no sense to me why they moved it around but ...lesson learned. Even with the specs ...I wouldn't have guessed they would change the position of the mounting flange center line (which isn't shown there). https://cimg9.ibsrv.net/gimg/www.rx8...e71fe899bb.jpg I saw that Pulsar sells a V-band to T3 adapter, but it adds about 1” to the flange length I suppose it might be a fitment issue in that direction? Though I’m not sure how the flange position lines up between the two that way? https://cimg0.ibsrv.net/gimg/www.rx8...230fc9ab7.jpeg . https://cimg1.ibsrv.net/gimg/www.rx8...22ba38132.jpeg . |
Definitely not enough clearance for that. I think it ends up less than 1" as the v band is back a bit vs the T3 but it will still ad 15mm or so and that is too much.
|
Another day of cruising and roll racing yesterday at the 'Farewell Pukekohe' meet. This was the last public playday for this Iconic racetrack before it gets turned into a housing development. Sad day for NZ motorsport.
Anyway, I had a blast . This car on 12psi with a bone stock Renesis against all manner of performance car (most heavily modified ) held it's own admirably. For the day (maybe 25 roll races) I only got beaten by three other cars ... a 3 rotor turbo Rx3 totally annihilated me (even though I got a sizeable jump on him), a late model AMG Merc by less than two car lengths , a highly modded evo, was even till I missed 3rd. Best race of the day was vs late model modded V8 HSV commodore .... went door to door the whole way down the back straight 2nd 3rd and 4th (over 200km/hr by the time we backed off). Took on a couple of late model V8 mustangs...no problem for the little 1.3 Renesis. The actual organised roll racing was a disappointment. Had to sit in the sun with engine heat soaking for a good half hour before I got to race. Was concerned about IATs but I did have a little extra ethanol in the tank so took the risk. Only two races in that session the first with a Honda Type R where I think he forgot it was a race the second with a V8 commodore that I won by several car lengths (must have been stock). There were only five 8s there today this was our group ........... https://cimg0.ibsrv.net/gimg/www.rx8...db03734016.png Registration https://cimg1.ibsrv.net/gimg/www.rx8...b4fe79c3f4.jpg |
Had such a good time yesterday , I decided to go back for the competition phase today .
Lined up for the roll race competition hoping to make a good showing as a lot of the cars that lined up I'd already raced in the cruise sessions. Had one practice run which ended up being with the GTR pictured sitting behind my 8. He took me by about three car lengths so ........... I tried to avoid him for the first elimination run. But didn't work as I ended up racing him again ... grrrrrr! The only way I could win was if he DQd so I tried to get him to jump me at the start but he just hung back because he knew he could take me .......... which he did ...by a little bit more this time . Oh well ..... it's not like I stood any show, as the top cars were running chutes which was a def. clue as to how quick they were. https://cimg5.ibsrv.net/gimg/www.rx8...4266e04273.jpg looking toward the start line . N/A cars on the right ...open class on left . https://cimg3.ibsrv.net/gimg/www.rx8...6c31055e55.jpg As I was one of the first to get eliminated , I ended up in pits behind first and second place getters in the N/A competition. On right a heavily modified v8 came in second vs the 3 rotor 808 wagon which won it. https://cimg6.ibsrv.net/gimg/www.rx8...68230005d1.jpg After that session I decided to do another cruise session which went on for over an hour . I stayed on track and had countless roll races with all manner of machinery . One of the more memorable races was with an F type Jag .... was pretty even but he started pulling away slightly once we got over about 160km/hr .That's the only one I recall losing today but didn't have anyone else in the car which def. made a difference. Definitely noticed a lot of cars trying to avoid me today. Maybe because they didn't want to get owned by an 8 ?????..... One in particular was an Audi RS6 targa race car ..... I eventually forced a race with him and showed him my tailpipes. Engine/turbo/manifold still running great after that weekend of solid punishment! |
Originally Posted by Brettus
(Post 4974869)
Strange noise turned out to be a couple of loose bolts holding turbo to manifold . Need to find a solution to that as it's happened before.!
|
Brett, have you looked at Nord-Lock washers, www.nord-lock.com.
They allow the bolt to be tightened and the two halfs of the washer lock together and hold the bolt very tight. The washer basically bits into the bolt and the surface its locking onto and stops the bolt from coming undone. I have used these type of washer before and found them to work very well. Not sure how much heat they would take, but might be worth looking at. |
Nord Lock. 1:30 and 3:30:
Requires surface to be covered in none or very little paint to work, assuming thats not going to be a problem for this application:) And it requires that bolt is torqued enough to have been stretched a bit. |
Nordlocks also have the X-series which are slightly curved to provide a spring effect on top of the normal locking design.
They can also be ordered in a variety of materials including Inconel 718 for high temp resistance. For budget minded folk like myself McMaster sells wedge lock washers comparable to Nordlock, I use these: https://www.mcmaster.com/wedge-lock-washers/ |
Started running this after my local Motul supplier ran out of stock. Had a bit of a read up on RX7 site and this seemed a good choice for use with ethanol mixes. So far it's been fine (only one tank of gas used)
A few things :1/ It requires mixing . I noticed it just dropped to bottom of my 20L container when poured in whereas the Motul micro 2t would mix instantly by itself. No sign of any separation after a month of sitting though. 2/ Can't beat that caster smell :) 3/ I decided a couple of years back that I'd just run a relatively low ethanol content (20%) and just add premix to counter the ethanol at 80:1 ethanol/premix. This works out at 400:1 for a tank. I also upped the omp rate by fitting the larger piston to the primary pump. This strategy is working well. Only drawback is too much oil at idle ...not a biggie. https://cimg7.ibsrv.net/gimg/www.rx8...032e8f15d5.png |
My experience is that Castor is nasty long term. Beware. Lots of unpleasant deposits, all through the machine, from gas tank to exhaust. Even at low % mixtures (both for the oil formulation blend and the fuel/oil mixture). If you plan to store the car for any extended time, run something else through it before doing so. I've had injectors get glued shut, never mind what it did to carbs. More dangerous for you is that the injectors will work but flow less and lean you out when you need output. I used to be a big fan of Castor blends, now no more. I don't run alcohol, so beyond this I have no info.
That being said, Klotz is a great company. Good oil if you intend frequent teardowns and want max protection. Many of those bottles found in the pits at motorcycle events, for 50+ years. The make Castor candles too, for the true gearhead. |
Well I'm pretty sure the Motul was the cause of some pretty bad deposits as well. Seems to be a common theme for anyone running ethanol and premix. At 400:1 I doubt I'll experience anything as significant as what you are talking about. I'll be wary though , thanks for the heads up.
|
I remember castor oil being used heavily in methanol-based fuel for glow engines in radio-controlled anything. Granted that 10-15-20% of that fuel was actually castor oil, if we didn't wipe off the model of that unburnt oil then we weren't getting it out ever again. Then, at the beginning of every season we had to fight carbs till they cleared themselves of old oil that sat in them. Yucky thing... gave up on glow engines and went to gasoline 2strokers pretty fast. So no, I wouldn't use it on my rotary. Motul 510 at 10$ / liter is fine.
|
welcome to 20 years ago …
Mr Rude Again . |
Originally Posted by TeamRX8
(Post 4984711)
welcome to 20 years ago …
Mr Rude Again . |
Originally Posted by ciprianrx8
(Post 4984531)
I remember castor oil being used heavily in methanol-based fuel for glow engines in radio-controlled anything. Granted that 10-15-20% of that fuel was actually castor oil, if we didn't wipe off the model of that unburnt oil then we weren't getting it out ever again. Then, at the beginning of every season we had to fight carbs till they cleared themselves of old oil that sat in them. Yucky thing... gave up on glow engines and went to gasoline 2strokers pretty fast. So no, I wouldn't use it on my rotary. Motul 510 at 10$ / liter is fine.
The problem with RC is most of us have use natural castor, which is not what you should use. Those also separated from the fuel very quickly. It should be de-gummed. That removes part (most) of the problem. With Castor marketed oils, one should be careful as some are heavily diluted with synthetic ester oil (some up to 5% castor, 95% synth). Some show it clearly, most hide it and you have to find it in the SDS. I run Putoline castor R. |
In other words, all talk and no understanding again
and Brettus, more world experience than my own is not accounting for my own sources, which you should well know better by now and very dishonest of you to tout a forum source over pro race engine builders. So sick of your dishonest fabrications, it’s like watching a toilet overflowing guile all over the forum floor. Worse is the other people on here who don’t shineola from feces and believe you. . |
I see you are back spreading your vitriol again. You should have stayed over in the 7 forum ... but I see they are onto your lack of experience there as well now!
Never mind ..go and ask your experts ... looks like you need some backup. |
|
Now where did I see that pipe layout before ? :D Good job. If you want to play with the tune a bit and make it easier to start, then scale your maf table so that it never reads lower than 2g/s then tweak the cranking fuel PW table.
|
Originally Posted by ciprianrx8
(Post 4987101)
Now where did I see that pipe layout before ?.
Originally Posted by ciprianrx8
(Post 4987101)
If you want to play with the tune a bit and make it easier to start, then scale your maf table so that it never reads lower than 2g/s then tweak the cranking fuel PW table.
|
| All times are GMT -5. The time now is 11:25 AM. |
© 2024 MH Sub I, LLC dba Internet Brands