Has anyone done this to their v6? if so, which ones will fit if any. I wanna get a set of those noisy gears to get some more noise in the motor.. hehe. Payce.

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85 2.8L Sport Coupe 5-speed.
Mods: Hpertech chip and powerstat, MSD 6A-L, Crane fireball coil, Dynomax hi-flow cat and catback system with a dynomax magnum race bullet muffler on the i-pipe, K&N filterchargers, Eibach and Tokiko springs/shocks setup, Global west sub frames, Suspension techniqs front and rear sway bars, and good ole 88 IROC wheels with Kumo Ecstas on em!
"I'm out to seek those pesky VTEC boys!" (don't get me wrong, I'm asian myself! hehe)

 

As far as I know, there's no timing gears available. There's no such thing as a roller gear; only roller chains. A roller chain produces less friction than a normal chain. The only dual-roller chain available for our 2.8/3.1 motors is the Cloyes one, it cost me $90 from Summit Racing.

If you want some whine, you could put on some aftermarket rear gears.. I hear the Richmonds have some whine to them.


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

Any power gains from changing it out to a new one? I've got 192k on my current timing chain. thanks.

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85 2.8L Sport Coupe 5-speed.
Mods: Hpertech chip and powerstat, MSD 6A-L, Crane fireball coil, Dynomax hi-flow cat and catback system with a dynomax magnum race bullet muffler on the i-pipe, K&N filterchargers, Eibach and Tokiko springs/shocks setup, Global west sub frames, Suspension techniqs front and rear sway bars, and good ole 88 IROC wheels with Kumo Ecstas on em!
"I'm out to seek those pesky VTEC boys!" (don't get me wrong, I'm asian myself! hehe)

 

You get a bit. A newer chain will give you back your "accurate timing". An old chain gets stretched out, and can throw off your timing a couple degrees.

The roller chain cuts down on friction- and as a result, won't be so quick to stretch. You'll get maybe 2-3 HP out of it at high rpm's. After doing my chain, the car felt "zippier". I'm sure most of the zip came from accurate timing. I bought the best just because I wanted it; you should see the same gain for less cost with a stock chain.

Oh- the Cloyes comes with the chain and both sprockets for $90. When my friend did his 2.8's chain, the Pep Boys guy told him $20 for the chain. That didn't include either sprocket! I think the full "stock" set was $60... [edit] I should probably add this to cover my butt- Don't quote me on that "stock set" price.

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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

[This message has been edited by TomP (edited May 01, 2001).]

 

Call 800-831-0884 Norhtern Auto Parts
I got a new SPeed Pro (TRW) chain & Fel Pro set for $50-60
You are playing with matches with a chain at almost 200K
You will enjoy the difference!

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Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA

 

cool... so does it matter if its roller or not? by the way, are our chains the same as the ones on small block v8's? say a 305 or so? just wondering... cuz i really want timing gears if possible.

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85 2.8L Sport Coupe 5-speed.
Mods: Hpertech chip and powerstat, MSD 6A-L, Crane fireball coil, Dynomax hi-flow cat and catback system with a dynomax magnum race bullet muffler on the i-pipe, K&N filterchargers, Eibach and Tokiko springs/shocks setup, Global west sub frames, Suspension techniqs front and rear sway bars, and good ole 88 IROC wheels with Kumo Ecstas on em!
"I'm out to seek those pesky VTEC boys!" (don't get me wrong, I'm asian myself! hehe)

 

summit racing has gears. they only list V8 applications in the catalog, but you should at least call to ask if they carry them

 

Three types of chains.
Link belt, used by the majority of engines.
They last the longest.
Roller chain, stretches easy, but, rolls easier, may gain a few HP
Then the belts, like on Hondas
Can get gears, but, to stressful on the engine. Engines need a shock absorber like a car. The chain accomplishes that mission.
Small Block V-8 chain does not work in out 60 degree application.

------------------
Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA

 

To answer your last Q, Anti, our engines are 100% different from 90* SBCs (3.8/4.3v6, 305/327/350/383/400/420v8, etc)

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'86 Camaro SC, black /w silver racing stripes
2.8l MPFI/700r4 /w special 2nd gear delete option
In search of new v8 engine & transmission, now contemplating t5 swap to get me out of this mess.
Misc Mods: Cut air box, '83 Firebird spoiler.
Performance Parts: MSD coil, Accel 8mm wires, SplitFire plugs, Gabriel hijackers.
Audio Mods: Pioneer DEH-P3000, two 12" Optimus Pro Audio subs in hand-made enclosure each powered by a 260 watt Optimus amp. Working on shaving the box for weight.
My Homepage, with pics.

 

Actually, everything I've read says that a roller chain stretches less than a normal timing chain.


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

Hi Tom.
I got my information from the engineers at TRW, the guys that supply the parts to the big 3.
He explained that the link timing belt, has more guts, to it, unlike the roller chain, which is your bicycle chain. Less guts, to it.
The chain stretches easier.
BUT BUT
You loose about 2-3 HP with the link belt design, but gain it back in length (miles) of timing accuracy.
Which is why you see those link chain belts on the V-8, etc, when ya remove them, first time. They are also more silent, quieter, than the roller chains design.

------------------
Chat Soon,
KED85
Karl
1985 Firebird 2.8 to 3.4 swap project for Smog Happy LA, CA

 

Hm, interesting... these links I dug up through yahoo.com also say a roller chain produces less stretch. Technically mine's a dual roller; maybe the TRW guy was talking about single roller chains?

http://www.edelbrock.com/automotive/timingchains.html

http://www.musclecargarage.com/Chrys...entletter.html (6th line of descriptions)

http://www.dansperformance.com/page/cams.htm (under Timing Chains for Accuracy & Long life)

http://www.federal-mogul.com/product..._speed_pro.htm (under competition series timing sets)

http://users.erols.com/aon6/aon6/hard%20way.htm (3rd listing under "first steps")

http://www.inil.com/users/dlbrown/ofbas.htm (under "Timing Chain Replacement", 2nd paragraph under "Preparation"

http://www.foothill.net/~terryk/X11Z19.HTM (not really relating to timing chain stretch, but he ALSO lists the Cloyes true roller chain as $90, not $25, as some claim.)


------------------
-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

I was just wondering if they were interchangeable because when you look at the pictures, they look very very similar.. eh? hehe thanks.

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85 2.8L Sport Coupe 5-speed.
Mods: Hpertech chip and powerstat, MSD 6A-L, Crane fireball coil, Dynomax hi-flow cat and catback system with a dynomax magnum race bullet muffler on the i-pipe, K&N filterchargers, Eibach and Tokiko springs/shocks setup, Global west sub frames, Suspension techniqs front and rear sway bars, and good ole 88 IROC wheels with Kumo Ecstas on em!
"I'm out to seek those pesky VTEC boys!" (don't get me wrong, I'm asian myself! hehe)

 

The only tip-off is that when you buy a timing chain set for a 2.8/3.1 v6, it has a different part # then that of a 5.0/5.7 V8. So the reasoning goes, if a V8 timing chain won't fit a V6, then a V8 timing gear won't fit a V6.

Plus we've got that odd-ball timing cover... I hate scraping that damn thing.


------------------
-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!