which manifold - Page 3 - Aussie V8 | Holden - Ford

pvk308 · 27-08-2008, 04:03 PM

ah thats the manifold that was cast to suit the dash 3 heads if im correct tk have heard good reports about it during development. i have noticed that with off the shelf cams the TP and harrop single plain are on a par and the TP dual plane compares favourably or sometimes out performs both of them. I have also noticed when you start getting into custom grind cams with big lift the harrop really does perform better than the tp single plain but hey each engine is different and each to there own opinion

yella1ton · 27-08-2008, 06:09 PM

ok cheers guys for all the help so if im not going a big solid and stick with the hyd the tp dual plane should be fine. Does anyone know any links to see what the tp dual plane looks like.

muz_z · 27-08-2008, 07:11 PM

Untitled Document

Great manifold i am using one on my 355 with a soild

yella1ton · 27-08-2008, 07:19 PM

ok cheers muz
sounds like a good manifold not to badly priced either

munro68 · 27-08-2008, 08:16 PM

IMHO it is the best street 355 manifold on the market, bar none - for a pure drag race engine with a large solid cam them yes, a single plane may have the edge, but for most applications the TP will hand a Harrop single it's ass.

I've used both on customer engines, I am very, very impressed with the TP & will never recommend a single again on an engine with less than 250 deg @ .050" on the cam.[/quote]

I agree TK,I've had both manifolds on my 355,10:6:1,solid cam similar to the 280,and the TP is far better for torque in the low and mid range compared to the Harrop s/p,and top end is the same as before.Not saying the Harrop is crap by any means,as I'll be using it on another 355 I have and throwing it in a LX hatch for some strip action,if and when A.I.R opens,but for the street,the T.P highrise is the better option.

yella1ton · 27-08-2008, 08:24 PM

is it gonna for sure fit under my bonnet of my hx i want to be sure.
All ports also advises me that it will needs a lot of work to make it good and he reccomends the harrop. This is confusing lol

munro68 · 27-08-2008, 08:39 PM

[quote=yella1ton;184063]is it gonna for sure fit under my bonnet of my hx i want to be sure.

Well it easly fits under my bonnet (HK monaro),the Harrop on the other hand,use to hit,and thats using the thinnest filter I could find.

MCEcomp · 27-08-2008, 08:45 PM

If your not gunna rev the snot out of it, the TP single will be a better choice.

It does need extensive port matching though, i have made just on 500HP with a TP...

3554me · 27-08-2008, 08:53 PM

Quote:

Originally Posted by MCEcomp

If your not gunna rev the snot out of it, the TP single will be a better choice.

It does need extensive port matching though, i have made just on 500HP with a TP...

what would be a estimate cost on the extensive port matching required?
thanks

400HPONLPG · 27-08-2008, 08:57 PM

Well the Harrop barely fits under the bonnet of the HZ ute , and thats with a redline dropover housing and a 65mm filter. The torquepower is 10mm higher and had no hope of fitting in , and this is on VS block with VS heads . On my Stato ,because its early heads I use a Torquepower and had to cut the bonnet and fit a scoop even with a 50 mm filter . By the way both are SINGLE plains , wouldnt touch a dual plain , so for best performance out of the box , Harrop for VN's and Torquepower for early heads in a SINGLE Plain .

TK383 · 27-08-2008, 09:32 PM

Shit no - don't port match the thing!!!!!
The port missmatch is part of the bloody design, if you port match the floor of the runners you screw that up & it won't work as well!!!!
The only port matching required is the roof & sides, you leave the floor untouched & there's no more work in that than port matching any other intake.

It'll fit under the bonnet of a HQ-WB easy - a TP high rise for early heads will just squeeze under, the high rise dual plane for VN heads sits at least 1" lower, so it'll go no probs - hell, it fits under the bonnet of a VN-VR commode no probs.

400HPONLPG - you couldn't get the TP single under a WB bonnet? - dunno why, I had one with a drop base air cleaner with 3.5" element under the bonnet of my HX tonner for a couple of years, no problemo.

MCEcomp · 27-08-2008, 09:56 PM

Bullshit it needs no port matching

The taper in the walls is up side down(tighter in the roof and wider on the floor and the runner to plenum entry is all over the joint

TK383 · 27-08-2008, 10:04 PM

It's supposed to be that way! - it's done due to the dual plane design having runners at different heights, the tapers, missmatches etc are there to balance the flow between the runners. Screw one to a head & whack it on a flow bench untouched - it'll be damn near spot on for flow balance, then, if you want to screw it up, port match it, fix the 'problems' & then test it again - bingo, instant missmatch!!

Trust me man, I know the things quite well, leave em alone, that's how they're meant to be, they work real nice.

TK383 · 27-08-2008, 10:48 PM

PS - that 500hp 383 I was talking about earlier: the TP high rise dual plane is almost untouched, just milled for port alignment & the roof & sides touched up a tad - everything else is 100% as cast.

yella1ton · 27-08-2008, 11:09 PM

ok cheers tk 383 im still undecided im sure the tp and the harrop are both good manifolds ive herd only good from both. But if the tp dp is better through the rev range i might be maybe leaning towards that way. Allports said for me to give him a ring tomorrow so i might have a bit of a talk about it to him.

27-08-2008, 08:45 PM	#38 (permalink)
MCEcomp casual poster Trade Rating: (0) Join Date: Feb 2008 Location: Melbourne Ride: HG Prem Posts: 293	If your not gunna rev the snot out of it, the TP single will be a better choice. It does need extensive port matching though, i have made just on 500HP with a TP... __________________ Superflow 902 Dyno service 3370lb HG prem 10.013@134 358 chev N/A flat tappet cast heads

27-08-2008, 09:56 PM	#42 (permalink)
MCEcomp casual poster Trade Rating: (0) Join Date: Feb 2008 Location: Melbourne Ride: HG Prem Posts: 293	Bullshit it needs no port matching The taper in the walls is up side down(tighter in the roof and wider on the floor and the runner to plenum entry is all over the joint __________________ Superflow 902 Dyno service 3370lb HG prem 10.013@134 358 chev N/A flat tappet cast heads

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27-08-2008, 04:03 PM	#31 (permalink)
pvk308 casual poster Trade Rating: (0) Join Date: Jun 2008 Location: brisbane Ride: vk Posts: 318	ah thats the manifold that was cast to suit the dash 3 heads if im correct tk have heard good reports about it during development. i have noticed that with off the shelf cams the TP and harrop single plain are on a par and the TP dual plane compares favourably or sometimes out performs both of them. I have also noticed when you start getting into custom grind cams with big lift the harrop really does perform better than the tp single plain but hey each engine is different and each to there own opinion

27-08-2008, 06:09 PM	#32 (permalink)
yella1ton casual poster Trade Rating: (0) Join Date: Jul 2008 Location: mt gambier Ride: hx 1 tonner Posts: 46	ok cheers guys for all the help so if im not going a big solid and stick with the hyd the tp dual plane should be fine. Does anyone know any links to see what the tp dual plane looks like.

27-08-2008, 07:11 PM	#33 (permalink)
muz_z Newbie Trade Rating: (0) Join Date: May 2007 Location: Sydney Ride: INJ 355 VH SLE Posts: 11	Untitled Document Great manifold i am using one on my 355 with a soild

27-08-2008, 07:19 PM	#34 (permalink)
yella1ton casual poster Trade Rating: (0) Join Date: Jul 2008 Location: mt gambier Ride: hx 1 tonner Posts: 46	ok cheers muz sounds like a good manifold not to badly priced either

27-08-2008, 08:16 PM	#35 (permalink)
munro68 casual poster Trade Rating: (0) Join Date: Jun 2007 Location: adelaide Ride: HKmonaro, LXHatch VT355, f1360, BMWci Posts: 50	IMHO it is the best street 355 manifold on the market, bar none - for a pure drag race engine with a large solid cam them yes, a single plane may have the edge, but for most applications the TP will hand a Harrop single it's ass. I've used both on customer engines, I am very, very impressed with the TP & will never recommend a single again on an engine with less than 250 deg @ .050" on the cam.[/quote] I agree TK,I've had both manifolds on my 355,10:6:1,solid cam similar to the 280,and the TP is far better for torque in the low and mid range compared to the Harrop s/p,and top end is the same as before.Not saying the Harrop is crap by any means,as I'll be using it on another 355 I have and throwing it in a LX hatch for some strip action,if and when A.I.R opens,but for the street,the T.P highrise is the better option.

27-08-2008, 08:24 PM	#36 (permalink)
yella1ton casual poster Trade Rating: (0) Join Date: Jul 2008 Location: mt gambier Ride: hx 1 tonner Posts: 46	is it gonna for sure fit under my bonnet of my hx i want to be sure. All ports also advises me that it will needs a lot of work to make it good and he reccomends the harrop. This is confusing lol

27-08-2008, 08:39 PM	#37 (permalink)
munro68 casual poster Trade Rating: (0) Join Date: Jun 2007 Location: adelaide Ride: HKmonaro, LXHatch VT355, f1360, BMWci Posts: 50	[quote=yella1ton;184063]is it gonna for sure fit under my bonnet of my hx i want to be sure. Well it easly fits under my bonnet (HK monaro),the Harrop on the other hand,use to hit,and thats using the thinnest filter I could find.

27-08-2008, 08:57 PM	#40 (permalink)
400HPONLPG Do you ever leave? Trade Rating: (0) Join Date: Nov 2005 Location: Perth Ride: HZ one tonner Gas only, WB Stato Gas only ,XR650R Posts: 2,122	Well the Harrop barely fits under the bonnet of the HZ ute , and thats with a redline dropover housing and a 65mm filter. The torquepower is 10mm higher and had no hope of fitting in , and this is on VS block with VS heads . On my Stato ,because its early heads I use a Torquepower and had to cut the bonnet and fit a scoop even with a 50 mm filter . By the way both are SINGLE plains , wouldnt touch a dual plain , so for best performance out of the box , Harrop for VN's and Torquepower for early heads in a SINGLE Plain .

27-08-2008, 09:32 PM	#41 (permalink)
TK383 casual poster Trade Rating: (0) Join Date: Jul 2007 Location: Adelaide Ride: HX Tonner Posts: 253	Shit no - don't port match the thing!!!!! The port missmatch is part of the bloody design, if you port match the floor of the runners you screw that up & it won't work as well!!!! The only port matching required is the roof & sides, you leave the floor untouched & there's no more work in that than port matching any other intake. It'll fit under the bonnet of a HQ-WB easy - a TP high rise for early heads will just squeeze under, the high rise dual plane for VN heads sits at least 1" lower, so it'll go no probs - hell, it fits under the bonnet of a VN-VR commode no probs. 400HPONLPG - you couldn't get the TP single under a WB bonnet? - dunno why, I had one with a drop base air cleaner with 3.5" element under the bonnet of my HX tonner for a couple of years, no problemo.

27-08-2008, 10:04 PM	#43 (permalink)
TK383 casual poster Trade Rating: (0) Join Date: Jul 2007 Location: Adelaide Ride: HX Tonner Posts: 253	It's supposed to be that way! - it's done due to the dual plane design having runners at different heights, the tapers, missmatches etc are there to balance the flow between the runners. Screw one to a head & whack it on a flow bench untouched - it'll be damn near spot on for flow balance, then, if you want to screw it up, port match it, fix the 'problems' & then test it again - bingo, instant missmatch!! Trust me man, I know the things quite well, leave em alone, that's how they're meant to be, they work real nice.

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27-08-2008, 10:48 PM	#44 (permalink)
TK383 casual poster Trade Rating: (0) Join Date: Jul 2007 Location: Adelaide Ride: HX Tonner Posts: 253	PS - that 500hp 383 I was talking about earlier: the TP high rise dual plane is almost untouched, just milled for port alignment & the roof & sides touched up a tad - everything else is 100% as cast.

27-08-2008, 11:09 PM	#45 (permalink)
yella1ton casual poster Trade Rating: (0) Join Date: Jul 2008 Location: mt gambier Ride: hx 1 tonner Posts: 46	ok cheers tk 383 im still undecided im sure the tp and the harrop are both good manifolds ive herd only good from both. But if the tp dp is better through the rev range i might be maybe leaning towards that way. Allports said for me to give him a ring tomorrow so i might have a bit of a talk about it to him.