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Old 09-13-2016, 01:32 PM
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Originally Posted by Nisaja
Hey guys. So a friend of mine bought a 2004 RX-8, 6 speed manual. 30,000 miles on the chassis, around 15,000 on the new engine. The engine has been replaced. Problem is, when we started it, the car just died after 2 mins of idling. We started it back up. So that was fine. Then something really weird was happening with the throttle. So, every time I rev it, the engine would rev up to like 1200rpm, drop down to idle and then rev until I let go of the pedal it's like I'm blipping the throttle right before I rev it. The needle bounces up and down once, and then revs all the way until I let go of the pedal. This happened in neutral btw. Just wanted to know what you guys think.
Check the Throttle body? Brake cleaner baby. Is it consistently doing this? Or did it happen just this one time?
Old 09-13-2016, 01:37 PM
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how about using tb cleaner instead of brake cleaner lol
Old 09-13-2016, 02:25 PM
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Originally Posted by 200.mph
how about using tb cleaner instead of brake cleaner lol
It's over rated:p but he is right. TB cleaner is a better option. I just like brake cleaner aalot.
Old 09-13-2016, 08:07 PM
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Originally Posted by Grog
hey guys I just put a 3-foot lift kit on my 8. was wondering if anyone had any good recommendations for mudding tires?

thanks
325/60R18 Mickey Thompson 10ply Baja Claws on a American Racing simulated bead lock rim. Perfect on any lift
Old 09-14-2016, 05:51 AM
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Originally Posted by iAchilles
Check the Throttle body? Brake cleaner baby. Is it consistently doing this? Or did it happen just this one time?
It's constantly doing it. My friend just checked the fuel trims today. LTFT is showing -15. Everything else seems normal. What does AFR commanded and AFR metered mean?

I'll try cleaning the throttle body. Thanks!
Old 09-14-2016, 06:08 AM
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AFR is air-fuel-ratio. So metered would be the actual ratio ex. 1:1.
The command would be the amount that is executed. So this is out of my field of knowledge. But I broke down the words to deduct this^^^^
Old 09-14-2016, 07:18 AM
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Originally Posted by iAchilles
AFR is air-fuel-ratio. So metered would be the actual ratio ex. 1:1.
The command would be the amount that is executed. So this is out of my field of knowledge. But I broke down the words to deduct this^^^^
Thanks! I know what AFR is. Just wanted to know why Torque shows 2. They're giving 2 different readings. AFR commanded is showing 14.8:1. AFR Metered is showing 15.33:1. So commanded is showing it's all ok and metered is showing the car is running lean
Old 09-14-2016, 07:30 AM
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Originally Posted by Nisaja
Thanks! I know what AFR is. Just wanted to know why Torque shows 2. They're giving 2 different readings. AFR commanded is showing 14.8:1. AFR Metered is showing 15.33:1. So commanded is showing it's all ok and metered is showing the car is running lean
Hmmm this may sound dumb but could there be a leak passed the maf somewhere? maybe on the manifold or by the throttle body cause you said everything seems fine but metered is showing lean so maybe the sensors picking up good air flow then after the sensor more air is causing the lean reading? Or am i just too tired and am not thinking logically? But i don't recommend brake cleaner for tb cleaning id say go with carb cleaner or tb cleaner i mean its not much of a price difference and its safer good luck my friend hope for the best
Old 09-14-2016, 07:37 AM
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So som3 Google research returned with.....check the MAF. Have you cleaned it yet? If not ONLY use MAF cleaner. Also check to make sure the connection is good. It's secured down. Look for leaks in the intake accordion or around the intake. From what I read, MAF reading would cause your AFR meter to run differently from your command due to an obstruction in your MAF's reading.
Old 09-14-2016, 07:54 AM
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Thanks guys. We're just cleaned it. Didn't make much of a difference. I guess he'll have to replace it.
Old 09-14-2016, 07:56 AM
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Originally Posted by Nisaja
Thanks guys. We're just cleaned it. Didn't make much of a difference. I guess he'll have to replace it.
Did you happen to smoke test for any leaks ?
Old 09-14-2016, 09:25 AM
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Ok. Serious (although admittedly dumb) questions. I have a 2009 Series 2 6speed manual RX-8 and am thinking about an Engine swap. Originally I was thinking of swapping with the 13B ReW (the "w" indicating the presence of twin turbos) but to my understanding the twin turbos of the REW will not fit in the Rx-8. So if it has no twin turbos should I just get a plain 13B RE (without turbos) and if I got that would an originally non turboed 13B RE be able to accommodate a single turbo if I added one or is the 13B RE not designed to handle the production of the turbos found in the 13B REW?

Aside from all of that, what is the difference between the 13B RE and 13B REW? Is there a difference in the exhaust ports and strength of the material etc?

If I were to do a swap, what all would I require?
Old 09-14-2016, 09:29 AM
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Originally Posted by RxEric
Did you happen to smoke test for any leaks ?
Not yet. We're gonna try that tomorrow. Thanks for reminding lol. Almost forgot about that.
Old 09-14-2016, 09:32 AM
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Originally Posted by fnikhall
Ok. Serious (although admittedly dumb) questions. I have a 2009 Series 2 6speed manual RX-8 and am thinking about an Engine swap. Originally I was thinking of swapping with the 13B ReW (the "w" indicating the presence of twin turbos) but to my understanding the twin turbos of the REW will not fit in the Rx-8. So if it has no twin turbos should I just get a plain 13B RE (without turbos) and if I got that would an originally non turboed 13B RE be able to accommodate a single turbo if I added one or is the 13B RE not designed to handle the production of the turbos found in the 13B REW?

Aside from all of that, what is the difference between the 13B RE and 13B REW? Is there a difference in the exhaust ports and strength of the material etc?

If I were to do a swap, what all would I require?
This is a question where you should look into some ones build. Firecrans for ex. There is way to much to list for this thread.

But to start

Do you have the ample time it will take? Tools? Knowledge of the 13b itself (I doubt)? Fabricating skills? Money. About 8kfor the bare minimum I would say. If you did all the work yourself. You can keep things like the PS, throttle body and ac, transmission otherwise, you will need to replace alot. Do some reading, this isn't a very simple answer.
Old 09-14-2016, 09:42 AM
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Originally Posted by iAchilles
This is a question where you should look into some ones build. Firecrans for ex. There is way to much to list for this thread.

But to start

Do you have the ample time it will take? Tools? Knowledge of the 13b itself (I doubt)? Fabricating skills? Money. About 8kfor the bare minimum I would say. If you did all the work yourself. You can keep things like the PS, throttle body and ac, transmission otherwise, you will need to replace alot. Do some reading, this isn't a very simple answer.
Alright thanks. I suppose my real question is can I use an originally turboless 13b RE and out a turbo on it or do I need to use a 13b REW if I plan on having a turbo? Like what is the difference between the RE and REW?
Old 09-14-2016, 09:49 AM
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So just used Google for you.......13b-RE is just a 13b engine, 13b-REW is symbolizing twin turbo.
Old 09-14-2016, 09:50 AM
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http://www.rx7club.com/1st-generation-specific-1979-1985-18/13b-re-13b-rew-whats-differet-518112/


It was the first link when I googled......
Old 09-14-2016, 09:59 AM
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Thanks
Old 09-14-2016, 10:22 AM
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Originally Posted by iAchilles
So just used Google for you.......13b-RE is just a 13b engine, 13b-REW is symbolizing twin turbo.
Yes but can the stock motor 13b handle the turbo addition or is a rebuild necessary ?
Old 09-14-2016, 10:23 AM
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The 13B-RE came on the Eunos Cosmo and came with a twin turbo system.
Old 09-14-2016, 10:26 AM
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If you are doing a 13b RE or REW swap. You should rebuild the engine anyways...it can handle the turbo. As Love_Hounds said.
Old 09-14-2016, 10:36 AM
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Originally Posted by iAchilles
If you are doing a 13b RE or REW swap. You should rebuild the engine anyways...it can handle the turbo. As Love_Hounds said.
Awesome thanks I appreciate it
Old 09-14-2016, 11:00 AM
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Originally Posted by Nisaja
Hey guys. So a friend of mine bought a 2004 RX-8, 6 speed manual. 30,000 miles on the chassis, around 15,000 on the new engine. The engine has been replaced. Problem is, when we started it, the car just died after 2 mins of idling. We started it back up. So that was fine. Then something really weird was happening with the throttle. So, every time I rev it, the engine would rev up to like 1200rpm, drop down to idle and then rev until I let go of the pedal it's like I'm blipping the throttle right before I rev it. The needle bounces up and down once, and then revs all the way until I let go of the pedal. This happened in neutral btw. Just wanted to know what you guys think.

Does it do it with your foot on the clutch?
Old 09-14-2016, 12:31 PM
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Originally Posted by dannobre
Does it do it with your foot on the clutch?
Yes. It's not gearbox/clutch related.
Old 09-15-2016, 12:20 AM
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Originally Posted by Nisaja
Yes. It's not gearbox/clutch related.
Often a bad neutral safety switch will cause a hunting idle like that


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