

different form sparkplugs for marnel heads
#21
Posted 17 June 2005 - 06:03 PM
http://oklahomaspeed.com/pics/BPR%20in%20Marnel.JPG
Kurt
1/4 12.92
MPH 105
B2600i MPI turbo ;)
#22
Posted 20 June 2005 - 12:58 PM
the stock plug surely stuck out a good 1/4" on my head. lets see if its the same on yours.
88 Starion - 341rwhp@23psi on 91 octane - sold
97 3000GT VR4 - Sold
#23
Posted 20 June 2005 - 11:42 PM
86' R04 Quest, MPI, 750cc INJ, 19C, 3in Ex, SS lines, Short Shifter, Spec Stage 3, Spearco IC & 2.5in pipes, TurboXs RFL, Autometer Gauges, Hawk EMS, Greddy EBC & TT ...SOLD...
#24
Posted 20 June 2005 - 11:51 PM
http://www.ngk.com/results_app.asp?AAIA=1208225
The NGK plug recommended for our car has a reach of 3/4". The same reach between the platinum, iridium, and regular spark plugs.
86' R04 Quest, MPI, 750cc INJ, 19C, 3in Ex, SS lines, Short Shifter, Spec Stage 3, Spearco IC & 2.5in pipes, TurboXs RFL, Autometer Gauges, Hawk EMS, Greddy EBC & TT ...SOLD...
#25
Posted 21 June 2005 - 10:22 AM
88 Starion - 341rwhp@23psi on 91 octane - sold
97 3000GT VR4 - Sold
#26
Posted 03 July 2005 - 09:33 AM
i will have to check the thread depth when i change my head gasket.
B-71 87 TSI ~ RIP
Black 87 Starion ~ Mess SOLD!!!
Proud New 89 slightly Rusted Fiji Owner !!!
#27
Posted 29 July 2005 - 03:32 PM
#28
Posted 03 October 2005 - 07:20 PM

#29
Posted 05 October 2005 - 04:51 PM
88 Starion - 341rwhp@23psi on 91 octane - sold
97 3000GT VR4 - Sold
#30
Posted 29 October 2005 - 01:44 PM
#31
Posted 29 October 2005 - 06:28 PM
I forgot about this thread when I had MrDodge's engine apart.
Here's a picture of the Marnal-India head.
It looks pretty good as far as the spark plug projection.
'88 Fiji - 8:1-40ovr Wiseco's, Schndr 6610 springs,Updated TPS sensor
Kelly's 3" exh, MSD 8.8Spr Cndctr wires, Welderwiz's vacuum hoses, Stock turbo, 1G MAS
ProfecB-II, Fidanza
#32
Posted 29 October 2005 - 07:27 PM
88 Starion - 341rwhp@23psi on 91 octane - sold
97 3000GT VR4 - Sold
#33
Posted 12 November 2005 - 07:08 PM
Is it possible using the Marnel head from spain, with the Stock Starion or conquest TBI Injection system for the moment as daily driving
When I get the marnel head in here can i just make the Porting job or its also very important to have the polish job as well.
How much is the retail price for a porting and polish job done. or at least just the porting. Doing the polish job on the marnel head after porting, it will make any difference, i'm just asking because i only read that many people is doing the porting job but i haven't see at this moment anyone doing the polish job as well on any head. i just want to know whats the deal with that, in not doing the polish work, may be is more expensive +++$$$ in doing the polish work.

Dont believe me :P come look at it.
Ok, for Guys and Ladies that Loves DRIFTING here
check this out,
#34
Posted 09 December 2005 - 01:54 AM
Same with the shroud and the plug body, if they were gettging hot you would seem them turn a lighter color.
Kevin
#35
Posted 01 February 2006 - 10:05 PM
Same with the shroud and the plug body, if they were gettging hot you would seem them turn a lighter color.
Kevin
or is it because they are made of different metal.
everything is hot in a combustion chamber, it doesn't have to be discolored from heat to be hot enough to cause premature detonation.
i'm gonna check this out.. Art - what does a port job like that do to the compression, quench zone, etc. ? does it thin it out excessively around any water jackets?
"It's riding, it's riding, the Devil in Red!"
#36
Posted 02 February 2006 - 01:33 AM
anothing thing with the exposed threads. if carbon builds up on those threads, it could easily damage the threads on the head if you remove the plug.
88 Starion - 341rwhp@23psi on 91 octane - sold
97 3000GT VR4 - Sold
#37
Posted 16 March 2006 - 11:03 PM
Same with the shroud and the plug body, if they were getting hot you would seem them turn a lighter color.
Kevin
or is it because they are made of different metal.
everything is hot in a combustion chamber, it doesn't have to be discolored from heat to be hot enough to cause premature detonation.
i'm gonna check this out.. Art - what does a port job like that do to the compression, quench zone, etc. ? does it thin it out excessively around any water jackets?
Its the combustions deposits that turn differant colors as the get hotter, not the metals. Once you have a few miles on a motor there are not many bare metal surfaces.
So if the plugs threaded section is dark with some oiley deposits on it it it not getting hot enough to burn the oil away.
A good example of this is the valves. The exhaust valve runs hot and you wons see any dark oily depostis on it. The intake valve runs a lot cooler and looks darker and oil and fuel can cake onto the backside.
Basicly its like reading plugs, white deposits = hot, dark = cold because it never got hot enough to burn the oil off. If the part is not hot enough to burn oil off of it its not a big factor for detonation, at lest compared to the exhaust valve thats hundres of degrees hotter.
Cooler running exhaust valves can redcue octane requirments. Since octane is a limiting factor for the amount of boost and HP you can can make finding a way of lower its temperature may help.
I wonder how sodium filled valves would work?
Kevin C
#38
Posted 08 April 2006 - 10:42 PM
then i held my finger against the base on the outside, then took it out, and measured that against the spark plug. it was the same length, but i have no idea if i'm holding the hanger peice in the right spot for a semi-acurate measure.
my head is on my car though. i have an AMC head and i think it's ok. but i'd like someone else to try or just tell me the smart way to do it, and i'll do it.
"It's riding, it's riding, the Devil in Red!"
#39
Posted 17 October 2006 - 04:05 PM
#40
Posted 07 January 2008 - 12:53 PM
Edited by tsiconquest88, 02 April 2009 - 06:35 PM.
89 Star ESIR SHP SOLD!!!!!
Black 89 SOLD!!!!!
89 Fiji sold
92 Dodge Spirit R/T
89 turbo voyager msd 2 coil, LSP MBC, Starquest Intercooled (o: (kids/grocery runs)
89 olds cutlass ciera stock 160 HP 185 TQ (daily driver beater)
00 grand am gt

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