JMO413 Posted May 22, 2019 Share Posted May 22, 2019 I am trying to figure out if a HO exhaust manifold will fit on a Renix head. I understand that it will not have a bung for the EGR or the O2 sensor. The O2 sensor will mount in the new HO down pipe. I understand a bung would have to be added for the EGR. I am trying to figure this out because I need a new exhaust and a new manifold. The HO manifolds are cheap and have the bellows. The renix manifolds are about $100 more. I am going to replace the down pipe either way so if the HO manifold works it's just cheaper. I am also going to add in an extra piece of flex pipe when I do the exhaust. Wondering if anyone had actually done this? Link to comment Share on other sites More sharing options...
jeeptec1 Posted May 22, 2019 Share Posted May 22, 2019 The exhaust ports are different. Don’t waste your timeSent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
cruiser54 Posted May 22, 2019 Share Posted May 22, 2019 12 hours ago, jeeptec1 said: The exhaust ports are different. Don’t waste your time Sent from my iPhone using Tapatalk Not true at all. Bolts right up. HO exhaust manifold on Renix As far as exhaust, you can use the Renix exhaust manifold and be fine. If you want to use the HO exhaust manifold, you must go with an HO headpipe and screw your O2 sensor into that headpipe. Standard Renix harness is plenty long to do so. A bung can be welded into the HO manifold to accept the EGR tube also. Link to comment Share on other sites More sharing options...
JMO413 Posted May 22, 2019 Author Share Posted May 22, 2019 23 minutes ago, cruiser54 said: Not true at all. Bolts right up. HO exhaust manifold on Renix As far as exhaust, you can use the Renix exhaust manifold and be fine. If you want to use the HO exhaust manifold, you must go with an HO headpipe and screw your O2 sensor into that headpipe. Standard Renix harness is plenty long to do so. A bung can be welded into the HO manifold to accept the EGR tube also. Thank you. Link to comment Share on other sites More sharing options...
JMO413 Posted June 12, 2019 Author Share Posted June 12, 2019 If anyone ever comes back to this the answer is yes. You need a HO head pipe and round the corner in the intake. Use the renix gasket so the intake lines up. The exhaust ports are identical. Renix on top HO on bottom. They sure look different. HO head pipe for the O2 sensor bung and different drop location. You will have to deal with the EGR pipe. I just deleted the EGR. Plate for the valve and plug for the pipe hole. Round both bottom corners. Just a little. HO manifold on a Renix! Link to comment Share on other sites More sharing options...
Knucklehead97 Posted June 12, 2019 Share Posted June 12, 2019 I just bought that same exhaust manifold I think. 56$ shipped on eBay 😁😁😁 Link to comment Share on other sites More sharing options...
JMO413 Posted June 12, 2019 Author Share Posted June 12, 2019 I got mine on eBay $50. It was a best offer vendor. Link to comment Share on other sites More sharing options...
cruiser54 Posted June 12, 2019 Share Posted June 12, 2019 And they said it couldn't be done...........LOL Nice write-up!!! Link to comment Share on other sites More sharing options...
JMO413 Posted June 12, 2019 Author Share Posted June 12, 2019 2 hours ago, cruiser54 said: And they said it couldn't be done...........LOL Nice write-up!!! Where there's a will there's a way! Thank you. Link to comment Share on other sites More sharing options...
Knucklehead97 Posted June 13, 2019 Share Posted June 13, 2019 Is that plug this part? Been looking for a plug the size of the EGR port under the intake.. Link to comment Share on other sites More sharing options...
JMO413 Posted June 13, 2019 Author Share Posted June 13, 2019 2 hours ago, Knucklehead97 said: Is that plug this part? Been looking for a plug the size of the EGR port under the intake.. Yes it is. M22×1.5 Link to comment Share on other sites More sharing options...
JMO413 Posted June 14, 2019 Author Share Posted June 14, 2019 New head pipe installed. The O2 sensor wiring fits perfect. And the sensor is easier to reach. Link to comment Share on other sites More sharing options...
Ryno Posted June 20, 2019 Share Posted June 20, 2019 On 5/22/2019 at 8:18 AM, cruiser54 said: Not true at all. Bolts right up. HO exhaust manifold on Renix As far as exhaust, you can use the Renix exhaust manifold and be fine. If you want to use the HO exhaust manifold, you must go with an HO headpipe and screw your O2 sensor into that headpipe. Standard Renix harness is plenty long to do so. A bung can be welded into the HO manifold to accept the EGR tube also. So the o2 senseor seem easy enough..... If someone did not have the tools to weld, could the EGR just be be deleted entirely? Which sucks because I just replaced all the vacuum lines with new tubing, including the egr lines Literally the only headers that I can find for Renix jeeps is the Pacesetter set and I have heard mixed reviews at best about those... Link to comment Share on other sites More sharing options...
JMO413 Posted June 20, 2019 Author Share Posted June 20, 2019 3 hours ago, Ryno said: So the o2 senseor seem easy enough..... If someone did not have the tools to weld, could the EGR just be be deleted entirely? Which sucks because I just replaced all the vacuum lines with new tubing, including the egr lines Literally the only headers that I can find for Renix jeeps is the Pacesetter set and I have heard mixed reviews at best about those... Yes you can delete the EGR if you're not worried about passing emissions. Doorman part #090-061 plug for the intake. Route66mods.com part#70978 https://www.route66mods.com/product/jeep-egr-delete/ This is both parts installed. Link to comment Share on other sites More sharing options...
DirtyComanche Posted June 20, 2019 Share Posted June 20, 2019 When deleting the EGR, it's easier to just use a pipe tap (I want to say 1/2" NPT) to thread the hole in the intake manifold, and then install a pipe plug in it, rather than making a blanking plate and getting a gasket. Link to comment Share on other sites More sharing options...
cruiser54 Posted June 21, 2019 Share Posted June 21, 2019 17 hours ago, Ryno said: So the o2 senseor seem easy enough..... If someone did not have the tools to weld, could the EGR just be be deleted entirely? Which sucks because I just replaced all the vacuum lines with new tubing, including the egr lines Literally the only headers that I can find for Renix jeeps is the Pacesetter set and I have heard mixed reviews at best about those... Yes, it can be deleted. Link to comment Share on other sites More sharing options...
Ryno Posted June 28, 2019 Share Posted June 28, 2019 So this question may need to go to a separate thread... but wouldn`t deleting the egr lead to running richer? Less recycled exhaust gas mean more air? Slight power gain but slightly worse fuel economy? I`m still learning in and outs, just curious what everyone else thinks. If there is a big difference, I`ll take the time to learn to weld and buy equipment....(eventually, probaly should anyway) and do it "properly" . If not, i`ll grab me a new header this weekend or next and plug that hole up and be done with it. Link to comment Share on other sites More sharing options...
Ωhm Posted June 28, 2019 Share Posted June 28, 2019 RENIX ECU knows when EGR is requested and cuts back on INJ PW during that time. So actually without EGR engine goes lean (these are very short time durations). ST/LT fuel trims should compensate for this. Link to comment Share on other sites More sharing options...
AVjeeper Posted May 25, 2020 Share Posted May 25, 2020 Hello all. Has anyone installed the ERG bung on the HO exhaust? Part numbers, order info, installation details, etc.? Also, any custom fitting required to the Renix intake to match up with the HO exhaust manifold? Much appreciated. AVjeeper Link to comment Share on other sites More sharing options...
cruiser54 Posted May 25, 2020 Share Posted May 25, 2020 Just now, AVjeeper said: Hello all. Has anyone installed the ERG bung on the HO exhaust? Part numbers, order info, installation details, etc.? Also, any custom fitting required to the Renix intake to match up with the HO exhaust manifold? Much appreciated. AVjeeper Bolts right up to the head. MAY have to do minimal filing on the intake manifold. No biggie. Link to comment Share on other sites More sharing options...
BeatCJ Posted May 25, 2020 Share Posted May 25, 2020 Does moving the O2 sensor further down stream affect how it reads? It wouldn't be difficult to add a bung for that onto the manifold/header, too. Link to comment Share on other sites More sharing options...
cruiser54 Posted May 25, 2020 Share Posted May 25, 2020 28 minutes ago, BeatCJ said: Does moving the O2 sensor further down stream affect how it reads? It wouldn't be difficult to add a bung for that onto the manifold/header, too. Your choice. 91 and later stock location is fine. Link to comment Share on other sites More sharing options...
BeatCJ Posted May 25, 2020 Share Posted May 25, 2020 Thank you, good to know. Link to comment Share on other sites More sharing options...
JMO413 Posted May 25, 2020 Author Share Posted May 25, 2020 1 hour ago, BeatCJ said: Does moving the O2 sensor further down stream affect how it reads? It wouldn't be difficult to add a bung for that onto the manifold/header, too. Mine works great on the HO position and the factory wiring reaches no problem. Link to comment Share on other sites More sharing options...
BeatCJ Posted May 25, 2020 Share Posted May 25, 2020 And the EGR delete doesn't seem to be a problem? I don't need to do anything right now, this is the first 4.0 I have ever driven WITHOUT an exhaust leak, just collecting information. Link to comment Share on other sites More sharing options...
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