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		<title><![CDATA[R3VLimited Forums - Engine &amp; Drivetrain]]></title>
		<link>https://www.r3vlimited.com/board/</link>
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		<lastBuildDate>Sun, 03 May 2026 01:53:01 GMT</lastBuildDate>
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			<title><![CDATA[R3VLimited Forums - Engine &amp; Drivetrain]]></title>
			<link>https://www.r3vlimited.com/board/</link>
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		<item>
			<title>1987 325es crank no start</title>
			<link>https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20/10160172-1987-325es-crank-no-start</link>
			<pubDate>Sun, 26 Apr 2026 18:14:42 GMT</pubDate>
			<description>Hey guys I bought another guys project a few weeks ago and have been trying to figure out a crank no start problem. I think it’s related to a bad ground since I can’t find a ground near the right strut tower. The car will run on starter fluid if I jump the dme relay but won’t fire injectors. If anyone’s dealt with something similar, I would appreciate any suggestions. Also if someone could tell me where I should be grounding the dme, or where the right strut tower ground is supposed to go, I would appreciate it!</description>
			<content:encoded>Hey guys I bought another guys project a few weeks ago and have been trying to figure out a crank no start problem. I think it’s related to a bad ground since I can’t find a ground near the right strut tower. The car will run on starter fluid if I jump the dme relay but won’t fire injectors. If anyone’s dealt with something similar, I would appreciate any suggestions. Also if someone could tell me where I should be grounding the dme, or where the right strut tower ground is supposed to go, I would appreciate it!</content:encoded>
			<category domain="https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20">M20</category>
			<dc:creator>Fryedchicken34</dc:creator>
			<guid isPermaLink="true">https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20/10160172-1987-325es-crank-no-start</guid>
		</item>
		<item>
			<title>Is this normal for new engine mounts?</title>
			<link>https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20/10160157-is-this-normal-for-new-engine-mounts</link>
			<pubDate>Sun, 26 Apr 2026 07:00:20 GMT</pubDate>
			<description><![CDATA[Hi all,
So I just got my M20 back in after a mild rebuild. It took a bit of wrestling but I got the mount bolts to go into the brackets. But now looking at it, I'm a bit worried that these mounts are really angled and something is wrong.

They are new mounts so hoping you all say that this is normal and they will just settle in after a bit ...😬]]></description>
			<content:encoded><![CDATA[Hi all,<br />
So I just got my M20 back in after a mild rebuild. It took a bit of wrestling but I got the mount bolts to go into the brackets. But now looking at it, I'm a bit worried that these mounts are really angled and something is wrong.<br />
<br />
They are new mounts so hoping you all say that this is normal and they will just settle in after a bit ...😬]]></content:encoded>
			<category domain="https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20">M20</category>
			<dc:creator>eight-0-eight</dc:creator>
			<guid isPermaLink="true">https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20/10160157-is-this-normal-for-new-engine-mounts</guid>
		</item>
		<item>
			<title>Standalone and M20 idle control</title>
			<link>https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20/10159990-standalone-and-m20-idle-control</link>
			<pubDate>Thu, 23 Apr 2026 03:56:02 GMT</pubDate>
			<description><![CDATA[Haltech Nexus S2 here. Does what I need and runs ITBs nicely. I tunned the idle in a similar fashion how stock Matronic does it, ICV never fully closed. My hot idle target is 900 rpm, ITBs set screw keeps the idle at 820 or so, Stock bosch ICV does the rest with being almost closed. Fully closed setting is 25% and I'm at 27%. Idles good considering 284 cam and ITBs. Ignition correction table and PIDs help to keep the idle on target and its ok in general all things considered, maybe 30-50 rpm or so as far as surge goes. Idle ignition sits around 10-12 adv and keepa the engine nice and not super hot.
I was given a suggestion to actually meet the target with the set screw = ICV fully closed and keep ICV for cold starts only. Any thermal expansion in ITBs and idle change should be taken care by idle error timing correction table... in theory. More stable idle?

How do you guys do it and what's your thoughts?]]></description>
			<content:encoded><![CDATA[Haltech Nexus S2 here. Does what I need and runs ITBs nicely. I tunned the idle in a similar fashion how stock Matronic does it, ICV never fully closed. My hot idle target is 900 rpm, ITBs set screw keeps the idle at 820 or so, Stock bosch ICV does the rest with being almost closed. Fully closed setting is 25% and I'm at 27%. Idles good considering 284 cam and ITBs. Ignition correction table and PIDs help to keep the idle on target and its ok in general all things considered, maybe 30-50 rpm or so as far as surge goes. Idle ignition sits around 10-12 adv and keepa the engine nice and not super hot.<br />
I was given a suggestion to actually meet the target with the set screw = ICV fully closed and keep ICV for cold starts only. Any thermal expansion in ITBs and idle change should be taken care by idle error timing correction table... in theory. More stable idle?<br />
<br />
How do you guys do it and what's your thoughts?]]></content:encoded>
			<category domain="https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20">M20</category>
			<dc:creator>zaq123</dc:creator>
			<guid isPermaLink="true">https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20/10159990-standalone-and-m20-idle-control</guid>
		</item>
		<item>
			<title>Vibration in 4th at hwy speeds - ensure proper alignment from engine to transmission?</title>
			<link>https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/transmission-driveline/10159985-vibration-in-4th-at-hwy-speeds-ensure-proper-alignment-from-engine-to-transmission</link>
			<pubDate>Thu, 23 Apr 2026 01:55:00 GMT</pubDate>
			<description><![CDATA[I was advised by a local driveshaft rebalancing shop that oftentimes the issue with the BMW two-part driveshafts of our type isn't actually the driveshaft, it's tired motor mounts and transmission mounts. I went with nice new transmission mounts from Rogue when I 5-speed swapped. My motor mounts are a bit saggy-looking though not cracked. Apparently a matter of a few millimeters of misalignment can cause noticeable vibration, I was told. Short of playing musical chairs with my engine mounts and shims and highway testing, is there a good way to get things as aligned as reasonable practicable? Pretty sure some misalignment and resonance is my culprit.]]></description>
			<content:encoded><![CDATA[I was advised by a local driveshaft rebalancing shop that oftentimes the issue with the BMW two-part driveshafts of our type isn't actually the driveshaft, it's tired motor mounts and transmission mounts. I went with nice new transmission mounts from Rogue when I 5-speed swapped. My motor mounts are a bit saggy-looking though not cracked. Apparently a matter of a few millimeters of misalignment can cause noticeable vibration, I was told. Short of playing musical chairs with my engine mounts and shims and highway testing, is there a good way to get things as aligned as reasonable practicable? Pretty sure some misalignment and resonance is my culprit.]]></content:encoded>
			<category domain="https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/transmission-driveline"><![CDATA[Transmission &amp; Driveline]]></category>
			<dc:creator>Maybe Magpie</dc:creator>
			<guid isPermaLink="true">https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/transmission-driveline/10159985-vibration-in-4th-at-hwy-speeds-ensure-proper-alignment-from-engine-to-transmission</guid>
		</item>
		<item>
			<title>M10 Gauge Cluster Help (AEM Infinity 506)</title>
			<link>https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/alternative-tuning-w-a-r-megasquirt-etc/10159712-m10-gauge-cluster-help-aem-infinity-506</link>
			<pubDate>Sun, 19 Apr 2026 19:04:09 GMT</pubDate>
			<description><![CDATA[Glad to say I'm halfway through my wiring harness and now it's time for the gauge cluster itself, I'm currently running a AEM infinity 506 and looking from the user manual, We have Lowside Pins and Digital Pins but I do need some help wiring this gauge cluster properly.  One thing is important and it's the tachometer, Basically the C104 requires the black wire from the tach itself to operate 12v square wave signals and I'm wondering what pin to use this for?  Green has been covered by C1-48 as that's tapped for the cluster and the economy gauge goes nowhere. (Ditching this useless gauge)]]></description>
			<content:encoded><![CDATA[Glad to say I'm halfway through my wiring harness and now it's time for the gauge cluster itself, I'm currently running a AEM infinity 506 and looking from the user manual, We have Lowside Pins and Digital Pins but I do need some help wiring this gauge cluster properly.  One thing is important and it's the tachometer, Basically the C104 requires the black wire from the tach itself to operate 12v square wave signals and I'm wondering what pin to use this for?  Green has been covered by C1-48 as that's tapped for the cluster and the economy gauge goes nowhere. (Ditching this useless gauge) <br />
<br />
 ]]></content:encoded>
			<category domain="https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/alternative-tuning-w-a-r-megasquirt-etc">Alternative Tuning / W.A.R / Megasquirt / etc</category>
			<dc:creator>BadDays</dc:creator>
			<guid isPermaLink="true">https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/alternative-tuning-w-a-r-megasquirt-etc/10159712-m10-gauge-cluster-help-aem-infinity-506</guid>
		</item>
		<item>
			<title>Cam Timing Help Needed -- Marks Built / Goodson Performance M20 Head</title>
			<link>https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20/10159614-cam-timing-help-needed-marks-built-goodson-performance-m20-head</link>
			<pubDate>Fri, 17 Apr 2026 04:07:40 GMT</pubDate>
			<description><![CDATA[Hey guys, hoping someone can help me out. I recently had some work done on my 1990 325i and my mechanic discovered my cam timing was advanced a tooth - he corrected it back to stock for fear of blowing a valve. The car now feels slower but still runs great.

Dug up the original invoice on the head/cam work from the previous owner and here's what I'm working with:

- Marks Built M20 head
- Ported and polished with intake matching
- Swirl chambers on intake side only
- Angle milled 15 degrees (noted as adding ~2 degrees of advance to cam timing)
- Built by Reed at Goodson Performance
- .470 lift intake / .486 lift exhaust
- New guides, seats, and TRW valves

Given the angle milling already adding ~2 degrees of advance to cam timing, I'm wondering if running the cam a tooth advanced was actually more correct for this setup than stock spec.

Does anyone have a similar setup? What does your timing look like? And does anyone know the overlap timing on this cam? Trying to figure out if I need to dial it back in advanced to get my power back. Also wondering about getting an adjustable cam gear.

Appreciate any help.]]></description>
			<content:encoded><![CDATA[Hey guys, hoping someone can help me out. I recently had some work done on my 1990 325i and my mechanic discovered my cam timing was advanced a tooth - he corrected it back to stock for fear of blowing a valve. The car now feels slower but still runs great.<br />
<br />
Dug up the original invoice on the head/cam work from the previous owner and here's what I'm working with:<br />
<br />
- Marks Built M20 head<br />
- Ported and polished with intake matching<br />
- Swirl chambers on intake side only<br />
- Angle milled 15 degrees (noted as adding ~2 degrees of advance to cam timing)<br />
- Built by Reed at Goodson Performance<br />
- .470 lift intake / .486 lift exhaust<br />
- New guides, seats, and TRW valves<br />
<br />
Given the angle milling already adding ~2 degrees of advance to cam timing, I'm wondering if running the cam a tooth advanced was actually more correct for this setup than stock spec.<br />
<br />
Does anyone have a similar setup? What does your timing look like? And does anyone know the overlap timing on this cam? Trying to figure out if I need to dial it back in advanced to get my power back. Also wondering about getting an adjustable cam gear.<br />
<br />
Appreciate any help.<br />
<br />
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			<category domain="https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20">M20</category>
			<dc:creator>ynwaE</dc:creator>
			<guid isPermaLink="true">https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20/10159614-cam-timing-help-needed-marks-built-goodson-performance-m20-head</guid>
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			<title>M20 oil prime after an oil change</title>
			<link>https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20/10158824-m20-oil-prime-after-an-oil-change</link>
			<pubDate>Sat, 04 Apr 2026 12:55:12 GMT</pubDate>
			<description><![CDATA[How many of your prime your engine after the oil change ? I've noticed it's like 1-2 sec after a startup and before any reading on the pressure gauge. I'm thinking if I should enable &quot;flood clrear&quot;  mode on Haltech for this. Basically, cranking with the gas pedal to the floor (100% on TPS) cuts off fuel injectors.]]></description>
			<content:encoded><![CDATA[How many of your prime your engine after the oil change ? I've noticed it's like 1-2 sec after a startup and before any reading on the pressure gauge. I'm thinking if I should enable &quot;flood clrear&quot;  mode on Haltech for this. Basically, cranking with the gas pedal to the floor (100% on TPS) cuts off fuel injectors. ]]></content:encoded>
			<category domain="https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20">M20</category>
			<dc:creator>zaq123</dc:creator>
			<guid isPermaLink="true">https://www.r3vlimited.com/board/forum/e30-technical-forums/engine-drivetrain/m20/10158824-m20-oil-prime-after-an-oil-change</guid>
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