Head Gasket Mystery - 1005A862 & 1005A758 & 1005A886

Head Gasket Mystery - 1005A862 & 1005A758 & 1005A886 - I am led to believe are slightly different

Triple Checking Gasket Cross Reference!!!!!!!!!!!!!!!!!








Ok i have a new 1005A886, I also found this same gasket on the wreck motor I have which is from a 2006 model Ralliart Colt.










Juri motor has the water jacket holes. He bought his in a kit. Yet to confirm PN








Intake manifold - MN143690
Pictures from the Ralliart Colt Workshop Manual->
Also note we use the same exhaust manifold gasket as a 4G18 - MR552763













The Victor Reinz gasket manual (PN# 61-53975-00 ) shows a 1005A862 with the water jacket openings. (2003/2005)





You can see here all 3 are cross referenced as the same gasket. Yet I believe they are different

















The 1005A886 is show in the similar fashion as the 1005A862.









This motor gasket is stamped 1.5-886 (its from an 2006 Ralliart Colt)









You can see the water jacket holes are also covered, they use small openings. Just like my new head gasket. Which is also stamped 1.5-886.

Looks like Adams is also a 1.5-886 (below image, not sure what 811 is though, this number varies) with the small pin hole water jacket holes. Mystery continues

<- Juri old head gasket with the extra water channel openings. Waiting for his stamped numbers
EDIT - this is a Victor Reinz gasket
Donated by: Juri








<- Head gasket from a Brabus 15-862 (571)

Donated by: Migo Black Fantom

"I know not, I am in Europe in France
Already quite a lot of parts are different between colt czt ralliart and Brabus"




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Brand：MITSUBISHI
Part Number(s)：1005A862
ProductName：Cylinder Head Gasket

MITSUBISHI 1005A862
MITSUBISHI 1005A758
REINZ        615397500
HERTH+... J1255066
GLASER        H4031700





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I asked Mitsubishi:

Q: Just curious can you see the differences on these two head gaskets 1005A862 & 1005A886.
A: Smaller holes in the gasket compared to a large cut out
   My only guess would be the smaller hole in the gasket leaves more gasket to do the sealing?

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1005A886 ?????
Mitsubishi»GE»Z27W»LTFFR»ENGINE»CYLINDER HEAD
Mitsubishi Colt Z27AG XNGF5 RA VER-RS (Turbo/2WD), 5FM/T

01210 1005A758 GASKET,CYLINDER HEAD 1
01210 1005A862 GASKET,CYLINDER HEAD 1
01210 1005A886 GASKET,CYLINDER HEAD 1

Engine Gaskets / cylinder head gasket KP Cylinder head gasket KR KA403328 4G15  1005A886
Engine Gaskets / cylinder head gasket KP Cylinder head gasket KR KA403326 4G15  1005A862
Could be year based?

http://www.partsbase.org/mitsubishi/colt-colt-plus-g-exp-ge-2003-z27a-xngfr8/

01210 1005A862 GASKET, CYLINDER HEAD. Period: 2005.12.1-2006.05.3; 01
01210 1005A886 GASKET, CYLINDER HEAD. Period: 2006.06.1-2006.11.3; 01
01210 MN119019 GASKET, CYLINDER HEAD. Period: 2003.06.1-2004.11.3; 01

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Head Gasket - 01210 PN# MD331145 - Is what i believe i have been seeing.in some of the links where the water jacket holes are different. As seen here /rcolt-rebuild-pick-list-part-numbers.html

Other -
MD355550 - BOLT, CYLINDER HEAD. Period: 2002.10.1-2006.05.3; Part Spec: WASHER ASSEMBLED,9X101.4; Shape: WASHER ASSEMBLED; Size: 9X101.4

For cross referencing part numbers: http://www.partsbase.org/

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Head castings?

Adams Head

Adams and a Rcolt 2008 head.

<- Unknown

2008 ->

<- Unknown

Final Stage of a Forged 4G15 MIVEC Build - 1005A886 & MD372536 & MN119379

/4g15-mivec-forge-build-nearing.html

Its been a long road but we are back at it!
Head has been modified & bolted down with the OEM MLS head gasket.

/4g15-crank-installation-arp-main-studs.html





We didn't use any copper gasket spray as previously planned.
Head studs were torqued to 50NM, released and re-torqued to 85ftlb (3 step process).

/z27ag-4g15-oil-port-modification-head.html






We installed the studs dry into the block, we bottomed out all studs but the ones in the doles?
For some reason these holes were too deep and wouldn't allow for enough thread engagement on the nut, so we backed them off by one turn.
I may go back and release the studs and torque them once more.








/piston-ring-gaping-for-4g15-mivec-rcolt.html

ARP Moly lube on all threads, washers and nuts
Part Number:201-4302 Application: BMW 2.5L-3.2L (M50/S50US/S52US) Inline 6-cyl





/big-end-oil-clearance-crank-endplay.html

Build Parts:
1005A886 & MD372536 & MN119379

/rcolt-engine-build-update-assorted-parts.html

/4g15-mivec-rcolt-headjobs-porting-and.html















Cam seal install & cam gears











Grey RTV to seal the end cam caps













Re-using seal, grey RTV to be double sure.







































Powder coated rocker cover, it really cleans up the engine





















<- Timing belt installation tools, setting timing marks TDC
























OK! so after installing everything i forgot to install the steel brackets that support the upper half of the timing cover. So i pulled the MIVEC cam forward so i can fit the M10 and properly mount the bracket.
It wasn't needed, but I wanted to do it right.

We decided to remove the aircon, it weighed 8kg. It makes the engine bay so much cleaner. Extra room to fit the motor

4G15 MIVEC Rocker Ratio - Stage 1 Cams VS OEM

ROCKER ARMS AND CAMSHAFTS
Cam height mm
             Standard  Limit
Intake valves    35.08   34.58
Exhaust valves  34.26   33.76





Cylinder head overall height 131.9 − 132.1 (Standard value)

/diesel-cleaning-bleeding-tappetslash.html
/4g15-4g63-mitsubishi-lash-adjuster.html



























Best way I could measure lift












Removing MIVEC so that I can install new cam seal

Little bit of assembly lube.












Pumping the lifters with diesel







































OEM Exhaust Cam see ~6.687mm of valve lift, which correlates to approx. 62.8CFM from the measured intake lift of 6.985mm

STG1 Exhaust Cam see ~8.1385mm of valve lift, which correlates to approx.71.2CFM from the measured intake lift of 8.255mm
Which works out to be 11.80% of increase from a ported head and stg1 cams



OEM Intake Cam see ~8.284mm of valve lift, which correlates to approx.95.3CFM from the measured intake lift of 8.255mm

STG1 Intake Cam see ~9.2555mm of valve lift, which correlates to approx.102.35CFM from the measured intake lift of 9.525mm
Which works out to be 6.89% of increase from a ported head and stg1 cams