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8th gen SI, got what could either be a rod knock or a knock sensor, how tell the difference and replace one and or the other. What all needs tool and parts wise
Knock sensor will trigger a code. In all likelihood, it's knocking. If that's the case, there are threads covering removal and rebuilding of the engine.
It will be a day or two before I'm back at the shop but I will upload that video asap.
I figure it's a main rod bearing and could I replace those with removing the engine?
I will be at the shop tomorrow but just so you know it sounds exactly like the car 8n this video I mean spot 9n like it, reply let me know what you think and if a complete tear down will be a must or 8f I can get away with the rod bearing replacement set I will send a link for the repair kit I'm thinking I may need
When a rod starts knocking it is dumping metal shavings into the oil which is then passed throughout the engine. It should really be completely torn down and cleaned to get the shavings out. It may be different since you own an Si but on the Civics I've had with rod knocks it's cheaper to just get another used engine (or at least the block and swap the head over once properly cleaned). Non-Si's are everywhere though so spare engines are cheaper. I've never actually tried to repair a rod knock.
At a minimum the crank and rod should be removed and checked at a machine shop. Otherwise your repair will not last long.
When a rod starts knocking it is dumping metal shavings into the oil which is then passed throughout the engine. It should really be completely torn down and cleaned to get the shavings out. It may be different since you own an Si but on the Civics I've had with rod knocks it's cheaper to just get another used engine (or at least the block and swap the head over once properly cleaned). Non-Si's are everywhere though so spare engines are cheaper. I've never actually tried to repair a rod knock.
At a minimum the crank and rod should be removed and checked at a machine shop. Otherwise your repair will not last long.
I've diagnosed the noise and I'm almost certain it's a main rod bearing that has gone bad. I have found some kids on eBay and other sites that are exclusively for replacing those bearings. Could you tell me a complete list of the tools I will need, and most importantly the size of the bolts holding the bearings in the rods? Also should I replace the bearings with stock OEM bearings or after market high performance bearings.
To do a complete tear down? A lot of them. You sure you have the skills to do this?
I believe the rod bolts on this engine use the reverse Torx, size would be E14.
I will always recommend OEM internals for OEM designed use.
I have ordered what seals and parts necessary for this job I have all the tools I should need are there any tips techniques or any thing that I should know about that probably has not been covered in the multiple videos I've watched will the motor need to be jacked up loose from the motor mounts will any of the subframe need to be taken off etc stuff like that.
The parts should arrive on the 15th I attend on going to work on the very next morning once I have everything laid out in front of me wish me luck I'll take a video and let y'all know how it goes
It should really be completely torn down and cleaned to get the shavings out. It may be different since you own an Si but on the Civics I've had with rod knocks it's cheaper to just get another used engine (or at least the block and swap the head over once properly cleaned).
Originally Posted by BrotatoChip
At a minimum the crank and rod should be removed and checked at a machine shop. Otherwise your repair will not last long.
Just going to put these here.
You may very well have the skills to repair this but I would be amazed if this repair works. Especially if you're able to drive to work the next day. Bearings are not universal size (at least not OEM parts).
Last edited by BrotatoChip; Jun 11, 2021 at 08:00 AM.
You may very well have the skills to repair this but I would be amazed if this repair works. Especially if you're able to drive to work the next day. Bearings are not universal size (at least not OEM parts).
QUOTEcan I not use the codes on the engine block to find the right color of bearings
can I not use the codes on the engine block to find the right color of bearings
Those codes on the block are for the crankshaft main bearings. For the connecting rod bearings there is a code on each rod and another on the crank next to each rod journal.
Those codes on the block are for the crankshaft main bearings. For the connecting rod bearings there is a code on each rod and another on the crank next to each rod journal.
So I want know until I get in there? There is no way of knowing which bearings I will need before I start the year down.
Not an 8th gen si, but here's how I saw the bearing colors for the D17A2 I took apart. Luckily I didn't have to change out bearings, but I still plastigauged it to make sure clearances were in spec.
