llsaw
MotoIQ Newb
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Posts:56
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| 03-09-2011 04:41 PM |
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I am having difficulty finding an overbore (81-81.5mm bore MLS performance headgasket) for QG18DE. The stock bore is 80mm. Does anyone have any leads for Felpro Permatorque or Ajusa. IPP (Import Performance Parts) no longer carry Ajusa. Does anyone have leads? |
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smartbomb
MotoIQ Super Genius
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| 03-09-2011 05:38 PM |
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You would be way better off swaping an SR20 into your car rather than trying to build a QG18. |
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llsaw
MotoIQ Newb
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Posts:56
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| 03-09-2011 05:53 PM |
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Errr.. Its a bit too late. Conrods are being made as I type this and likewise pistons. I have also procurred another QG18 engine. Apart from the lack of parts what would be the deficiency of building a QG18? SR20s are not found in Sentras in my country and was never even found in any Nissan cars sold here. This means most SRs are longitudinal in nature with only the SR20 from the RNN14 Pulsar GTiR being transverse. Either way its tough with SR20 or QG18 but I kinda like the challenge to do an engine no one else does. |
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llsaw
MotoIQ Newb
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| 03-09-2011 05:54 PM |
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Forgot to mention the QG will be turbocharged. Turbo is already sitting on my desk (BorgWarner EFR6258). |
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smartbomb
MotoIQ Super Genius
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| 03-09-2011 08:53 PM |
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No aftermarket support of any kind for one. No interest by anyone as another. You would basicaly be on your own except if you had general questions. |
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llsaw
MotoIQ Newb
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| 03-09-2011 09:55 PM |
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Am aware of this problem from the start. Guess this is what motivates me to do up the QG. Was worried that you were pointing to a major showstopper flaw within the QG engine itself that I overlooked. Phew..
In my country Sentras for one are typically targeted for errmm the more mature population hence there is already very minimal aftermarket performance parts beyond the typical rice category stuff. There are no SE-Rs, no Spec-Vs. Heck we don't even get the RS5F70A manual transaxle.. |
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smartbomb
MotoIQ Super Genius
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| 03-10-2011 06:17 AM |
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I think the stock headgasket probably isn't too bad if you keep the boost down below 15 lbs or so. |
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sticky667
MotoIQ ASE Certified
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Posts:217
west covina
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| 03-10-2011 07:05 AM |
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contact Uprev for the ecu. I'm almost certain the QG cars use the "newer style" ecu and they can pull the rom and flash it |
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llsaw
MotoIQ Newb
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Posts:56
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| 03-10-2011 01:37 PM |
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ECU is expected to be Autronic SM-4 (1st Choice) and Haltech Platinum Sport(2nd choice) as my engine builder is pretty familiar with mapping either and is also the distributor. We do not have knowledge or support for Uprev in my country (Malaysia) unfortunately. At least from what I know. With the forged steel H-beam conrod (K1 Technologies) , Ross Pistons + nitrided crank boost will be in excess of 1 bar (15 psi) hence reason I'm looking for a better headgasket.
Mike, I am being told that stock Nissan head gasket only comes in stock bore. Is that true? |
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smartbomb
MotoIQ Super Genius
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| 03-11-2011 07:37 AM |
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Ugh I hate the Autronic |
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llsaw
MotoIQ Newb
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Posts:56
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| 03-11-2011 04:42 PM |
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Errr.. why? My engine builder has been singing its praise. |
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smartbomb
MotoIQ Super Genius
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Posts:1904
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| 03-14-2011 09:17 AM |
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They suck, you can't tune the trigger well. poor resolution on maps, weak CDI. |
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llsaw
MotoIQ Newb
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| 03-14-2011 05:12 PM |
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OK, thanks. Will keep that in mind. |
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llsaw
MotoIQ Newb
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Posts:56
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| 07-31-2011 04:35 PM |
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Just to update. I imported the Ajusa MLS headgaset from Spain and currently have two in my hands right now after a 3 month wait. |
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Fly'n_Z
MotoIQ Staff
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Posts:154
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| 08-01-2011 07:07 AM |
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Cool! Does this mean you can move on with assembly of the engine now? |
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llsaw
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| 08-01-2011 08:44 PM |
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Depends on when the pistons and rods will be ready. |
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pregunta
MotoIQ Newb
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Posts:27
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| 10-21-2011 01:08 PM |
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Mod the gasket. I used a AJ-USA MLS head gasket on my overbored QR. 90.2mm. I separated the three layers, gasket matched the top and bottom to the cylinders, Then put the middle layer back in and cleaned that up, then I used the middle layer of a used MLS head gasket and made compression rings for the cylinders. I puth them all back together with head gasket glueand the controversal part , coppered it all. It seems to be working well after a year of 15 psi.
It's work/PIA, but it can be done. |
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llsaw
MotoIQ Newb
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Posts:56
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| 11-22-2011 03:53 PM |
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My QG18 K1 rods are finally here after 8 months!
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Fly'n_Z
MotoIQ Staff
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| 11-25-2011 02:20 PM |
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So now that you've got the rods is it time to start assembly? |
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llsaw
MotoIQ Newb
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| 11-28-2011 03:49 PM |
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Pistons are here.
ACL main bearings on back order and only avail end Dec. Are stock Nissan bearings wothwhile? |
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