1dirtyZ

iTrader: (1)

i just noticed that people are talking more about the 987-978 springs. are they better than the 918's?? are they a drop in type spring ( no modification required?)?

what info does any one have on them ( open seat pressure, closed pressure, lift,etc.)

thanks

bdawg/98mechamta#9

they should hold up to your "bolt ons"

bdawg/98mechamta#9

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> i just noticed that people are talking more about the 987-978 springs. are they better than the 918's?? are they a drop in type spring ( no modification required?)?

what info does any one have on them ( open seat pressure, closed pressure, lift,etc.)

thanks

</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">SAM IZAT YOU? i have no idea about the springs, im just starting to hear about 918"s and i just figured out that the builder put in 941"s in my car,, for my sissy *** cam they"re fine but... im thinking of going with the mti r1 stroker grind,,, have you heard of any other stroker grinds? <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

1dirtyZ

iTrader: (1)

hey bdawg, how are you doing??
i had 914's in my car a while back , until i broke one and went with the 918's. from what i heard the 918's are the way to go , but i want to make sure that they are the best when compared to the 978 and 987 springs.

the MTI cam is a good grind. have you looked at the thunder racing ones ?? have you resolved your detonation issues?

bdawg/98mechamta#9

[QUOTE]hey bdawg, how are you doing??
i had 914's in my car a while back , until i broke one and went with the 918's. from what i heard the 918's are the way to go , but i want to make sure that they are the best when compared to the 978 and 987 springs.

the MTI cam is a good grind. have you looked at the thunder racing ones ?? have you resolved your detonation issues?


I havent checked out thunder racing yet. I should call them & see what they suggest. MAFT has taken care of the detonation. & i dynoed 339 rwhp & 350 rwt not bad for $13000 huh J/k. inside im crying ! should i go to 918"s when i change cams though?? im just trying to be educated this time im still pissed at the guy who built it i added a stroker & I LOST 60 HP!! WTF? but i just got in the mail today a acpt c/f d/s for $500. Friggin thing is sweet. brand new he never put it on. i left you a message last week on azls1

quickWS6

The 978s and 987s are dual springs. They are better than 918s, but they require machining on the heads to fit them.

1dirtyZ

iTrader: (1)

hey bdawg,
trust me, your motor has so much untapped potential, all you need is a good tune .( and definatly a better cam).

i'm sorry about the AZls1 message , i havn't been on that site for a while now. i'll check it soon.


quick ws6 , what kind of machining do i need to do? widen the pockets? sink them in? what diameter are the 987-978 and what is the diameter of the 918 springs?

bdawg/98mechamta#9

ttt

1dirtyZ

iTrader: (1)

anyone??

1dirtyZ

iTrader: (1)

ttt

Sonny

iTrader: (1)

Here are the specs for all 3s....
918:

Installed Load: 130 lbs @ 1.800"
Open Load: 318 lbs @ 1.200"
Spring Rate: 313 lbs/in
Coil Bind Height: 1.085"
Outside Diameter: 1.290"/1.060”
Inside Diameter: .885"/.656”

-----------------
978/987

1.460 / 1.430 O.D.
.697 / .700 I.D.
126@1.850 / 138@1.750 Seat Load
368@1.250 / 325@1.250 Open Load
1.195 / 1.150 Coil Bind
403 / 344 Rate (Lbs./In.)